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DBE/DVE Series
www.murata-ps.com
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Output (V)
Current (A)
3.3
40
5
40
12
25
Input (Vdc)
V2 = 36-75Vdc
Typical unit
FEATURES
PRODUCT OVERVIEW

Advanced Bus Converter industry standard
eighth-brick with digital PMBus interface
Murata Power Solutions is introducing the ﬁrst in
a series of digitally controlled DC-DC converters
that are based on a 32-bit ARM processor. The
DBE series provides a fully regulated, digitally
controlled DC output in an eighth-brick format that
will support the evolving, Advanced Bus Converter
(ABC) industry standard footprint for isolated board
mounted power modules. The DBE series supports
advances in power conversion technology including
a digital interface supporting the PMBus protocol
for communications to power modules.
The DBE series products are eighth-brick
DC-DC converter with a digital interface supporting the PMBus standard for communicating with
power devices. The DBE series also supports the

Optional standard ﬁve pin Eighth-brick

High efﬁciency

Fast dynamic response

± 1% Vout Setting accuracy

2250 Vdc input to output isolation voltage

Optional baseplate (B option)

Voltage droop load sharing for parallel operation

Certiﬁed to UL/EN/IEC 60950-1, CAN/CSA-C22.2
No. 60950-1, 2nd Edition, safety approvals and
EN55022/CISPR22 standards
TNV standard for input Voltage with a 36–75Vin
speciﬁed Vin range and was designed to provide
payload power in distributed power architectures.
The DBE offers a “droop” load sharing option for
paralleling modules in the most demanding, power
hungry applications or to provide redundancy in
high reliability applications. The converter also
offers high input to output isolation of 2250 VDC as
required for Power over Ethernet (PoE) applications.
The DBE series is suitable for applications covering
MicroTCA, servers and storage applications, networking equipment, Power over Ethernet (PoE), fan
trays, wireless networks, wireless pre-ampliﬁers,
industrial and test equipment along with other
applications requiring a regulated 12V and 5V.
Power Management (PMBus Options)
Applications

Conﬁgurable soft-start/stop

Distributed power architectures

Conﬁgurable output voltage (Vout) and voltage
margins (Margin low and Margin high)

Intermediate bus voltage applications

Conﬁgurable protection limits for OVP, input over
voltage, input under voltage, over current, on/
off, and temperature

Network equipment

Servers and storage applications

Module Status monitor Vout, Iout, Vin, Temp,
Power good, and On/Off

System status monitor (Vout, Iout, Vin and Temp
over time)
For full details go to
www.murata-ps.com/rohs
PM
www.murata-ps.com/support
MDC_DBE Series.A03Δ Page 1 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ➀
Output
Input
Total Ripple & Noise
IIN, min. IIN, full
(mVp-p)
Regulation (max.) VIN Nom. Range load
IOUT
Power
load
(A, max) (W)
Typ. Max. Line (%) Load (%)
(V)
(V)
(mA)
(A)
Efficiency
Min.
Typ.
Open Frame Package
Dimensions (max.)
(inches, max.)
(mm)
Root Model
VOUT
(V)
DBE0340V2
3.3
40
132
60
100
±0.3
±0.25
48
36-75
90
2.96
91%
92.5%
2.3x0.9x0.45
58.4x22.9x11.4
DBE0240V2
5
40
200
50
100
±0.25
±0.25
48
36-75
90
4.46
93%
94%
2.3x0.9x0.45
58.4x22.9x11.4
DBE0125V2
12
25
300
80
150
±0.25
±0.25
48
36-75
110
9.25
93%
94.6%
2.3x0.9x0.46
58.4x22.9x11.7
DVE0340V2 ➁
3.3
40
132
60
100
±0.3
±0.25
48
36-75
90
2.96
91%
92.5%
2.3x0.9x0.45
58.4x22.9x11.4
DVE0240V2 ➁
5
40
200
50
100
±0.25
±0.25
48
36-75
90
4.46
93%
94%
2.3x0.9x0.45
58.4x22.9x11.4
DVE0125V2 ➁
12
25
300
80
150
±0.25
±0.25
48
36-75
110
9.25
93%
94.6%
2.3x0.9x0.46
58.4x22.9x11.7
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are speciﬁed with an external 1μF multi-layer ceramic and 10μF capacitors across their output pins.
➁ DVE models do not have the PMBus feature.
DIGITAL CONTROL BRICK PART NUMBER FORMAT
Description
Part Number Structure
Definition and Options
Product Family
D
DB = Full Featured Digital Bus converter, DV = NO PMBus, NO Sense & Trim Pins
Form Factor
X
E
Vout ➀
E = Eighth Brick
0
Output Current
1
01 = 12Vout, 02 = 5Vout, 03=3.3Vout (Without PMBus Vout cannot be changed)
2
5
Vin Range
Max Iout in Amps
V
Logic ➀
2
V2 = 36-75V
N
Pin Length ➁
N = Negative, P = Positive
x
Mechanical Conﬁguration
1 = 0.110" (cut), 2 = 0.145" (cut). Omit for standard shown in the mechanical drawings
B
Load Sharing
B = Baseplate, Omit for Open Frame (Standard Conﬁguration)
S
Paste In Hole (PIH) Processable ➂
S = Load Sharing, Omit for Standard (Standard Conﬁguration)
R
Speciﬁc Customer Conﬁguration
R = MSL-3 compliant Packaging, Blank for Standard Conﬁguration / Packaging
x
RoHS
x
Customer Code; Omit for Standard
C RoHS 6/6 Compliant
➀ PMBus Conﬁgurable
➁ Minimum order quantity is required. Samples available with standard pin length only.
➂ PIH parts are special order only.
Note: Some model number combinations may not be available. See website or contact your local Murata sales representative.
Part Number Examples
DBE0125V2NBSC = Full Featured Digital 1/8th Brick, 12Vout, 25A, 36-75Vin, Negative logic, Baseplate, Load Sharing, RoHS 6/6 compliant
DVE0240V2NBSC = No PMBus, No Sense & Trim 1/8th Brick, 5Vout, 40A, 36-75Vin, Negative logic, Baseplate, Load Sharing, RoHS 6/6 compliant
EVALUATION BOARD AVAILABLE FROM MURATA POWER SOLUTIONS
Part Number
Application Note
USB Adaptor Part Number
GUI Software Application Note
MPS-TD001
www.murata-ps.com/data/apnotes/dcan-63.pdf
MPS-AD001
www.murata-ps.com/data/apnotes/dcan-63.pdf
Contact your local Murata sales representative for ordering details.
www.murata-ps.com/support
MDC_DBE Series.A03Δ Page 2 of 32
DBE/DVE Series
FUNCTIONAL SPECIFICATIONS, DBE0340 (3.3V, 40A)
Conditions ➀
ABSOLUTE MAXIMUM RATINGS
Input Voltage, Continuous
Input Voltage, Transient
Isolation Voltage
Input Reverse Polarity
On/Off Remote Control
Output Power
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Minimum
Typical/Nominal
0
100 mS max. duration
Input to output, continuous
None, install external fuse
Power on, referred to -Vin
Maximum
Units
80
100
2250
Vdc
Vdc
Vdc
13.50
132
Vdc
W
None
0
0
Current-limited, no damage, short-circuit
0
40
A
protected
Storage Temperature Range
Vin = Zero (no power)
-55
125
°C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Speciﬁcations Table is not implied nor recommended.
Output Current
INPUT
Operating voltage range (V2)
Start-up threshold
Undervoltage shutdown
Internal Filter Type
External Input Fuse (Recommended)
Input current
Full Load Conditions
Low Line input current
Inrush Transient
Short Circuit input current
No Load input current
Shut-Down input currrent(Off, UV, OT)
(Default, Conf via PMBUS)
(Default, Conf via PMBUS)
36
32
30
Vin = nominal
Vin = minimum
Vin = 48V.
48
34
32
Pi
10
75
36
34
2.96
3.92
3.02
4.03
0.05
0.10
120
40
0.05
90
20
Iout = minimum, unit=ON
Vdc
Vdc
Vdc
A
A
A
A2-Sec.
A
mA
mA
GENERAL and SAFETY
Vin=48V, full load
Vin=min.
Input to output, continuous
Input to Baseplate, continuous
Output to Baseplage, continuous
Efﬁciency
Isolation Voltage
91
91
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
Certiﬁed to UL-60950-1, CSA-C22.2 No.609501, IEC/EN60950-1, 2nd edition
Per Telcordia SR-332, issue 1, class 3, ground
ﬁxed, Tcase=+25°C
92.5
92
2250
1500
1500
Functional
10
1000
%
%
Vdc
Vdc
Vdc
MΩ
pF
Yes
2200
Hours x 103
180
KHz
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Turn on Time
Ramp-up time
Vout Rise Time
Vout Fall Time
Dynamic Load Response
Dynamic Load Peak Deviation
(Default, Conf via PMBUS)
Vin On to Vout regulated
Remote On to Vout regulated
Conf via PMBUS, from 0% to 100%
Conf via PMBUS, from 100% to 0%
25-75-25% load step to 1% error band, 1A/uS,
with 470uF output external Cap
same as above
9
7
50
mS
15
10
30
20
13
mS
mS
mS
100
200
μSec
500
700
mVdc
1
13.50
0.80
2
V
V
mA
1
0.80
13.50
2
V
V
mA
FEATURES and OPTIONS
Remote On/Off Control
Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin)
“P” sufﬁx:
Positive Logic, ON state
ON = pin open or external voltage
3.5
Positive Logic, OFF state
OFF = ground pin or external voltage
0
Control Current
open collector/drain
“N” sufﬁx:
Negative Logic, ON state
ON = pin open or external voltage
-0.1
Negative Logic, OFF state
OFF = ground pin or external voltage
3.5
Control Current
open collector/drain
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MDC_DBE Series.A03Δ Page 3 of 32
DBE/DVE Series
FUNCTIONAL SPECIFICATIONS, DBE0340 (3.3V, 40A, CONT.)
Conditions ➀
OUTPUT
Minimum
Typical/Nominal
Maximum
Units
0
132
133.32
W
3.27
4.0
3.3
4.5
0
3.33
5.0
Vdc
Vdc
MΩ
0
40
No minimum load
49
40
A
53
A
Hiccup technique, autorecovery within 1% of Vout
2.5
3.0
A
Output shorted to ground, no damage
Continuous
Hiccup current limiting
Non-latching
±0.3
±0.25
%
%
100
mV pk-pk
Total Output Power
Voltage
Setting Accuracy
Overvoltage Protection
Voltage Droop (Conf via PMBUS)
Current
Output Current Range
Minimum Load
Current Limit Inception ➁
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
At 100% load, no trim
Conf via PMBUS, Magnetic Feedback
90% of Vnom., after warmup, Conf via PMBUS
Regulation ➂
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefﬁcient
Output Capacitance
Power Good—Negative logic (Conf via PMBUS)
Power good high stage voltage
Power good low stage voltage
Out voltage for power good off triggering
Out Voltage for power good on triggering
44
Vin=min. to max., Vout=nom., full load
Iout=min. to max., Vin=nom.
5 Hz- 20 MHz BW, Cout=1μF MLCC
paralleled with 10μF
At all outputs
Low ESR
220
7500
% of Vnom./°C
μF
Conf via PMBUS
Conf via PMBUS
2.4
-0.1
2
2.6
3.6
0.40
2.5
3
Vdc
Vdc
Vdc
Vdc
0.02
2.3
2.8
PMBus
PMBUS GENERAL
PMBUS REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used.
Bus speed
400
Khz
Logic high input
2
3.3
Vdc
Logic low input
-0.1
0.8
Vdc
Logic high output
2.4
3.6
Vdc
Logic low output
-0.1
0.4
Vdc
PMBUS ADDRESSING
If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBUS address = 8*SA0 + SA1. SA0/SA1 value VS
resistor connected to GND.
0
10
kΩ
1
22
kΩ
2
33
kΩ
3
47
kΩ
4
68
kΩ
5
100
kΩ
6
150
kΩ
7
220
kΩ
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MDC_DBE Series.A03Δ Page 4 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0340 (3.3V, 40A, CONT.)
Conditions ➀
PMBus
Minimum
PMBus MONITORING ACCURACY
VIN_READ
VOUT_READ
IOUT_READ (> = 10A)
IOUT_READ (<10A)
TEMP_READ
Typical/Nominal
-2
-2
-5
-1
-5
Maximum
Units
2
2
5
1
5
%
%
%
A
°C
DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION)
Fault Protection Speciﬁcations
Output Voltage, Over Voltage protection, OVP
VOUT_OV_FAULT_LIMIT, Conﬁgurable via PMBus
Factory default
>VOUT_OV_WARM_LIMIT
Fault response time
Factory default
Setpoint accuracy
Input Voltage, Input Over Voltage Protection
VIN_OV_FAULT_LIMIT (Conﬁgurable via
PMBus) ➃
Input Voltage, Input Under Voltage Protection,
UVLV
VIN_FAULT_LIMIT_LIMIT(Conﬁgurable via
PMBus) ➃
Over Current Protection, OCP
4.5
4.0
Over Temperature Protection, OTP
OT_FAULT_LIMIT (Conﬁgurable via PMBus) ➃
110
V
200
80
-2
>VIN_OV_WARM_LIMIT
34
Delay
300
μS
Factory default
32
V
Setpoint accuracy
<VIN_UV_WARM_LIMIT <VIN_OV_FAULT_LIMIT
<VIN_OFF
Delay
Setpoint accuracy (Io)
(factory default)
IOUT_OC_FAULT_LIMIT (Conﬁgurable via
PMBus) ➃
2
V
V
μS
V
%
5.0
>IOUT_OC_WARN_LIMT
Fault response time
OT_FAULT_LIMIT (factory default)
>OT_WARM_LIMIT
OTP accuracy (factory default)
Fault response time
-2
32
2
%
75
V
3
μS
%
A
50
A
300
-3
48
0
200
125
0
5
150
5
300
μS
°C
°C
°C
μS
MECHANICAL (Through Hole Models)
Outline Dimensions—open frame
2.3x0.9x0.45
58.4x22.9x11.4
2.3x0.9x0.52
58.4x22.9x13.2
34
45
0.04 & 0.062
1.016 & 1.575
Copper alloy
50
5
WxLxH
Outline Dimensions—with baseplate
Weight
WxLxH
Open frame
With baseplate
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Nickel subplate
Gold overplate
Inches
mm
Inches
mm
Grams
Grams
Inches
mm
μ-inches
μ-inches
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Baseplate Temperature
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating
Notes
with derating
Vin = Zero (no power)
Measured at hotspot
External ﬁlter required
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are speciﬁed with an external 1μF multi-layer ceramic and 10μF capacitors across their output pins.
➁ Over-current protection is non-latching with auto recovery (Hiccup)
-40
-40
-55
85
110
125
125
°C
°C
°C
°C
B
Class
RoHS-6
➂ Regulation speciﬁcations describe the output voltage changes as the line voltage or load current
is varied from its nominal or midpoint value to either extreme.
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MDC_DBE Series.A03Δ Page 5 of 32
DBE/DVE Series
FUNCTIONAL SPECIFICATIONS, DBE0240 (5V, 40A)
Conditions ➀
ABSOLUTE MAXIMUM RATINGS
Input Voltage, Continuous
Input Voltage, Transient
Isolation Voltage
Input Reverse Polarity
On/Off Remote Control
Output Power
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Minimum
Typical/Nominal
0
100 mS max. duration
Input to output, continuous
None, install external fuse
Power on, referred to -Vin
Maximum
Units
80
100
2250
Vdc
Vdc
Vdc
13.50
200
Vdc
W
None
0
0
Current-limited, no damage, short-circuit
0
40
A
protected
Storage Temperature Range
Vin = Zero (no power)
-55
125
°C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Speciﬁcations Table is not implied nor recommended.
Output Current
INPUT
Operating voltage range (V2)
Start-up threshold
Undervoltage shutdown
Internal Filter Type
External Input Fuse (Recommended)
Input current
Full Load Conditions
Low Line input current
Inrush Transient
Short Circuit input current
No Load input current
Shut-Down input currrent(Off, UV, OT)
(Default, Conf via PMBUS)
(Default, Conf via PMBUS)
36
32
30
Vin = nominal
Vin = minimum
Vin = 48V.
48
34
32
Pi
10
75
36
34
4.43
5.94
4.53
6.03
0.05
0.10
120
40
0.05
90
20
Iout = minimum, unit=ON
Vdc
Vdc
Vdc
A
A
A
A2-Sec.
A
mA
mA
GENERAL and SAFETY
Vin=48V, full load
Vin=min.
Input to output, continuous
Input to Baseplate, continuous
Output to Baseplage, continuous
Efﬁciency
Isolation Voltage
93
93
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
Certiﬁed to UL-60950-1, CSA-C22.2 No.609501, IEC/EN60950-1, 2nd edition
Per Telcordia SR-332, issue 1, class 3, ground
ﬁxed, Tcase=+25°C
94
93.5
2250
1500
1500
Functional
10
1000
%
%
Vdc
Vdc
Vdc
MΩ
pF
Yes
2200
Hours x 103
180
KHz
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Turn on Time
Ramp-up time
Vout Rise Time
Vout Fall Time
Dynamic Load Response
Dynamic Load Peak Deviation
(Default, Conf via PMBUS)
Vin On to Vout regulated
Remote On to Vout regulated
Conf via PMBUS, from 0% to 100%
Conf via PMBUS, from 100% to 0%
25-75-25% load step to 1% error band, 1A/uS,
with 470uF output external Cap
same as above
9
7
50
mS
15
10
30
20
13
mS
mS
mS
100
200
μSec
500
700
mVdc
1
13.50
0.80
2
V
V
mA
1
0.80
13.50
2
V
V
mA
FEATURES and OPTIONS
Remote On/Off Control
Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin)
“P” sufﬁx:
Positive Logic, ON state
ON = pin open or external voltage
3.5
Positive Logic, OFF state
OFF = ground pin or external voltage
0
Control Current
open collector/drain
“N” sufﬁx:
Negative Logic, ON state
ON = pin open or external voltage
-0.1
Negative Logic, OFF state
OFF = ground pin or external voltage
3.5
Control Current
open collector/drain
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MDC_DBE Series.A03Δ Page 6 of 32
DBE/DVE Series
FUNCTIONAL SPECIFICATIONS, DBE0240 (5V, 40A, CONT.)
Conditions ➀
OUTPUT
Minimum
Typical/Nominal
Maximum
Units
0
200
202
W
4.95
5.6
5
6
0
5.05
7
Vdc
Vdc
MΩ
0
40
No minimum load
49
40
A
53
A
Hiccup technique, autorecovery within 1% of Vout
2.5
3.0
A
Output shorted to ground, no damage
Continuous
Hiccup current limiting
Non-latching
±0.3
±0.25
%
%
100
mV pk-pk
Total Output Power
Voltage
Setting Accuracy
Overvoltage Protection
Voltage Droop (Conf via PMBUS)
Current
Output Current Range
Minimum Load
Current Limit Inception ➁
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
At 100% load, no trim
Conf via PMBUS, Magnetic Feedback
90% of Vnom., after warmup, Conf via PMBUS
Regulation ➂
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefﬁcient
Output Capacitance
Power Good—Negative logic (Conf via PMBUS)
Power good high stage voltage
Power good low stage voltage
Out voltage for power good off triggering
Out Voltage for power good on triggering
44
Vin=min. to max., Vout=nom., full load
Iout=min. to max., Vin=nom.
5 Hz- 20 MHz BW, Cout=1μF MLCC
paralleled with 10μF
At all outputs
Low ESR
220
7500
% of Vnom./°C
μF
Conf via PMBUS
Conf via PMBUS
2.4
-0.1
3
3.75
3.6
0.40
4
4.75
Vdc
Vdc
Vdc
Vdc
0.02
3.5
4.25
PMBus
PMBUS GENERAL
PMBUS REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used.
Bus speed
400
Khz
Logic high input
2
3.3
Vdc
Logic low input
-0.1
0.8
Vdc
Logic high output
2.4
3.6
Vdc
Logic low output
-0.1
0.4
Vdc
PMBUS ADDRESSING
If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBUS address = 8*SA0 + SA1. SA0/SA1 value VS
resistor connected to GND.
0
10
kΩ
1
22
kΩ
2
33
kΩ
3
47
kΩ
4
68
kΩ
5
100
kΩ
6
150
kΩ
7
220
kΩ
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MDC_DBE Series.A03Δ Page 7 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0240 (5V, 40A, CONT.)
Conditions ➀
PMBus
Minimum
PMBus MONITORING ACCURACY
VIN_READ
VOUT_READ
IOUT_READ (> = 10A)
IOUT_READ (<10A)
TEMP_READ
Typical/Nominal
-2
-2
-5
-1
-5
Maximum
Units
2
2
5
1
5
%
%
%
A
°C
DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION)
Fault Protection Speciﬁcations
Output Voltage, Over Voltage protection, OVP
VOUT_OV_FAULT_LIMIT, Conﬁgurable via PMBus
Factory default
>VOUT_OV_WARM_LIMIT
Fault response time
Factory default
Setpoint accuracy
Input Voltage, Input Over Voltage Protection
VIN_OV_FAULT_LIMIT (Conﬁgurable via
PMBus) ➃
Input Voltage, Input Under Voltage Protection,
UVLV
VIN_FAULT_LIMIT_LIMIT(Conﬁgurable via
PMBus) ➃
Over Current Protection, OCP
6
5.6
Over Temperature Protection, OTP
OT_FAULT_LIMIT (Conﬁgurable via PMBus) ➃
110
V
200
80
-2
>VIN_OV_WARM_LIMIT
34
Delay
300
μS
Factory default
32
V
Setpoint accuracy
<VIN_UV_WARM_LIMIT <VIN_OV_FAULT_LIMIT
<VIN_OFF
Delay
Setpoint accuracy (Io)
(factory default)
IOUT_OC_FAULT_LIMIT (Conﬁgurable via
PMBus) ➃
2
V
V
μS
V
%
7
>IOUT_OC_WARN_LIMT
Fault response time
OT_FAULT_LIMIT (factory default)
>OT_WARM_LIMIT
OTP accuracy (factory default)
Fault response time
-2
32
2
%
75
V
3
μS
%
A
50
A
300
-3
48
0
200
125
0
5
150
5
300
μS
°C
°C
°C
μS
MECHANICAL (Through Hole Models)
Outline Dimensions—open frame
2.3x0.9x0.45
58.4x22.9x11.4
2.3x0.9x0.52
58.4x22.9x13.2
34
45
0.04 & 0.062
1.016 & 1.575
Copper alloy
50
5
WxLxH
Outline Dimensions—with baseplate
Weight
WxLxH
Open frame
With baseplate
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Nickel subplate
Gold overplate
Inches
mm
Inches
mm
Grams
Grams
Inches
mm
μ-inches
μ-inches
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Baseplate Temperature
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating
Notes
with derating
Vin = Zero (no power)
Measured at hotspot
External ﬁlter required
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are speciﬁed with an external 1μF multi-layer ceramic and 10μF capacitors across their output pins.
➁ Over-current protection is non-latching with auto recovery (Hiccup)
-40
-40
-55
85
110
125
125
°C
°C
°C
°C
B
Class
RoHS-6
➂ Regulation speciﬁcations describe the output voltage changes as the line voltage or load current
is varied from its nominal or midpoint value to either extreme.
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MDC_DBE Series.A03Δ Page 8 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TYPICAL PERFORMANCE DATA, DBE0240 (5V, 40A)
Efﬁciency vs. Load Current @ 25°C, with baseplate
100
95
Efﬁciency (%)
90
Vin = 60V
Vin = 48V
Vin = 38V
85
80
75
70
0
10
20
30
40
50
Load Current (A)
On/Off Enable Start-up (Vin = 48V, Vout = nom, Iout = 40A, Cload = 10000μf, Ta = +25°C)
ch2 = Vout, ch4 = Enable
Start-up Delay (Vin = 48V, Vout = nom, Iout = 40A Cload = 10000μf, Ta = +25°C)
ch1 = Vin, ch2 = Vout
On/Off Enable Start-up (Vin = 48V, Vout = nom, Iout = 40A, Cload = 0, Ta = +25°C)
ch2 = Vout, ch4 = Enable
Start-up Delay (Vin = 48V, Vout = nom, Iout = 40A, Cload = 0, Ta = +25°C)ch1 = Vin,
ch2 = Vout
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MDC_DBE Series.A03Δ Page 9 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Transverse
Longitudinal
Maximum Current Temperature Derating at sea level
(Vin = 36V, airﬂow from Vin- to Vin+)
Maximum Current Temperature Derating at sea level
(Vin = 36V, airﬂow from Vin to Vout)
45
45
40
40
35
35
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
30
25
Output Current (Amps)
Output Current (Amps)
DBE0240 (5V, 40A) PERFORMANCE DATA: TEMPERATURE DERATING WITH BASEPLATE
20
15
25
20
15
10
10
5
5
0
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
30
0
35
40
45
50
55
60
65
70
75
80
85
35
40
45
50
Ambient Temperature (°C)
45
40
40
35
35
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Output Current (Amps)
Output Current (Amps)
45
25
20
15
65
70
75
80
85
80
85
80
85
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
30
25
20
15
10
10
5
5
0
0
35
40
45
50
55
60
65
70
75
80
85
35
40
45
50
Ambient Temperature (°C)
45
40
40
35
35
Output Current (Amps)
30
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
20
60
65
70
75
Maximum Current Temperature Derating at sea level
(Vin = 75V, airﬂow from Vin- to Vin+)
45
25
55
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 75V, airﬂow from Vin- to Vin+)
Output Current (Amps)
60
Maximum Current Temperature Derating at sea level
(Vin = 48V, airﬂow from Vin to Vout)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airﬂow from Vin- to Vin+)
30
55
Ambient Temperature (°C)
15
30
20
15
10
10
5
5
0
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
25
0
35
40
45
50
55
60
65
Ambient Temperature (°C)
70
75
80
85
35
40
45
50
55
60
65
70
75
Ambient Temperature (°C)
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MDC_DBE Series.A03Δ Page 10 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Transverse
Longitudinal
Maximum Current Temperature Derating at sea level
(Vin = 36V, airﬂow from Vin- to Vin+)
Maximum Current Temperature Derating at sea level
(Vin = 36V, airﬂow from Vin to Vout)
45
45
40
40
35
35
30
Output Current (Amps)
Output Current (Amps)
DBE0240 (5V, 40A) PERFORMANCE DATA: TEMPERATURE DERATING WITHOUT BASEPLATE
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
25
20
15
30
20
15
10
10
5
5
0
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
25
0
35
40
45
50
55
60
65
70
75
80
85
35
40
45
50
Ambient Temperature (°C)
45
40
40
35
35
30
Output Current (Amps)
Output Current (Amps)
45
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
20
15
65
70
75
80
85
80
85
80
85
30
25
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
20
15
10
10
5
5
0
0
35
40
45
50
55
60
65
70
75
80
85
35
40
45
50
Ambient Temperature (°C)
40
40
35
35
30
30
Output Current (Amps)
45
25
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
15
60
65
70
75
Maximum Current Temperature Derating at sea level
(Vin = 75V, airﬂow from Vin to Vout)
45
20
55
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 75V, airﬂow from Vin- to Vin+)
Output Current (Amps)
60
Maximum Current Temperature Derating at sea level
(Vin = 48V, airﬂow from Vin to Vout)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airﬂow from Vin- to Vin+)
25
55
Ambient Temperature (°C)
25
20
15
10
10
5
5
0
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
0
35
40
45
50
55
60
65
Ambient Temperature (°C)
70
75
80
85
35
40
45
50
55
60
65
70
75
Ambient Temperature (°C)
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MDC_DBE Series.A03Δ Page 11 of 32
DBE/DVE Series
FUNCTIONAL SPECIFICATIONS, DBE0125 (12V, 25A)
Conditions ➀
ABSOLUTE MAXIMUM RATINGS
Input Voltage, Continuous
Input Voltage, Transient
Isolation Voltage
Input Reverse Polarity
On/Off Remote Control
Output Power
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Minimum
Typical/Nominal
0
100 mS max. duration
Input to output, continuous
None, install external fuse
Power on, referred to -Vin
Maximum
Units
80
100
2250
Vdc
Vdc
Vdc
13.50
306
Vdc
W
None
0
0
Current-limited, no damage, short-circuit
0
25
A
protected
Storage Temperature Range
Vin = Zero (no power)
-55
125
°C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Speciﬁcations Table is not implied nor recommended.
Output Current
INPUT
Operating voltage range
Start-up threshold
Undervoltage shutdown
Internal Filter Type
External Input fuse
Input current
Full Load Conditions
Low Line input current
Inrush Transient
Short Circuit input current
No Load input current
Shut-Down input currrent (Off, UV, OT)
Back Ripple Current
(Default, Conf via PMBUS)
(Default, Conf via PMBUS)
36
32
30
Vin = nominal
Vin = minimum
Vin = 48V.
48
34
32
Pi
20
75
36
34
Vdc
Vdc
Vdc
9.25
12.28
A
A
A2-Sec.
A
mA
mA
A
Iout = minimum, unit=ON
0.03
110
20
9.6
12.8
0.05
0.10
150
40
Measured at the input of module with a simulated source impedance of 4.7μH, 220μF,
100V, across source, 33μF, 100V external
capacitors across input pins
2000
3000
mAp-p
620
1000
mAp-p
Back Ripple Current (no ﬁltering)
GENERAL and SAFETY
Vin=48V, full load
Vin=min.
Input to output, continuous
Input to Baseplate, continuous
Output to Baseplage, continuous
Efﬁciency
Isolation Voltage
93
93
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
Certiﬁed to UL-60950-1, CSA-C22.2 No.609501, IEC/EN60950-1, 2nd edition
Per Telcordia SR-332, issue 1, class 3, ground
ﬁxed, Tcase=+25°C
94.6
95
2250
1500
1500
Functional
10
1500
%
%
Vdc
Vdc
Vdc
MΩ
pF
Yes
1800
Hours x 103
180
kHz
DYNAMIC CHARACTERISTICS
SWITCHING FREQUENCY (Conﬁgurable via
PMBUS)
TURN ON TIME (Default, Conﬁgurable via PMBUS)
Vin On to Vout Regulated (100% Vout)
Remote On to Vout Regulated (100% Vout)
Vin Start up delay time
Enable Start up delay time
VOUT RISE TIME (Default, Conﬁgurable via PMBUS)
From 0%~100%
From 10%~90%
VOUT FALL TIME OF REGULATED OFF (Default, Conﬁgurable via PMBUS)
From 100%~0%
From 90%~10%
Dynamic Load Response
25-75-25% load step to 1% error band
Dynamic Load Peak Deviation
same as above
25
60
30
40
10
ms
ms
ms
ms
16
12.8
20
16
23
18.4
ms
ms
16
12.8
20
16
150
400
23
18.4
300
500
ms
ms
μSec
mVdc
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MDC_DBE Series.A03Δ Page 12 of 32
DBE/DVE Series
FUNCTIONAL SPECIFICATIONS, DBE0125 (12V, 25A, CONT.)
Conditions ➀
FEATURES and OPTIONS
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Minimum
Remote On/Off Control
Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin)
“P” sufﬁx:
Positive Logic, ON state
ON = pin open or external voltage
3.5
Positive Logic, OFF state
OFF = ground pin or external voltage
0
Control Current
open collector/drain
“N” sufﬁx:
Negative Logic, ON state
ON = pin open or external voltage
-0.1
Negative Logic, OFF state
OFF = ground pin or external voltage
3.5
Control Current
open collector/drain
Secondary On/Off control (Pull up to 3.3V internally, Voltages referenced to -Vout)
“P” sufﬁx:
Positive Logic, ON state
ON = pin open or external voltage
1.5
Positive Logic, OFF state
OFF = ground pin or external voltage
0
Control Current
open collector/drain
“N” sufﬁx:
Negative Logic, ON state
ON = pin open or external voltage
0
Negative Logic, OFF state
OFF = ground pin or external voltage
1.5
Control Current
open collector/drain
Sense pins connected externally to respective
Remote Sense Compliance
Vout pins
Typical/Nominal
Maximum
Units
1
13.5
0.8
2
V
V
mA
1
0.8
13.5
2
V
V
mA
1
3.3
0.8
2
V
V
mA
1
0.8
3.3
2
V
V
mA
10
%
OUTPUT
Total Output Power
Voltage
Setting Accuracy
Overvoltage Protection
At 100% load, no trim
Conf via PMBUS, Magnetic Feedback
without "S" sufﬁx
with "S" sufﬁx
Voltage Droop (Conf via PMBUS)
Current
Output Current Range
Minimum Load
Current Limit Inception ➁
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
0
300
306
W
11.76
13.8
12
14.4
0
10
12.24
15.6
Vdc
Vdc
MΩ
MΩ
0
25
A
No minimum load
29
31
A
Hiccup technique, autorecovery within 1% of Vout
0.4
1
A
Output shorted to ground, no damage
Continuous
Hiccup current limiting
Non-latching
±75
±45
mV
mV
80
150
mV pk-pk
0.01
98% of Vnom., after warmup, Conf via PMBUS
Regulation ➂
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefﬁcient
Maximum Output Capacitance
Power Good—Negative logic (Conf via PMBUS)
Power good high stage voltage
Power good low stage voltage
Out voltage for power good off triggering
Out Voltage for power good on triggering
27
Vin=min. to max., Vout=nom., full load
Iout=min. to max., Vin=nom.
5 Hz- 20 MHz BW, Cout=1μF MLCC
paralleled with 10μF
At all outputs
Low ESR
100
0.02
10,000
% of Vnom./°C
μF
Conf via PMBUS
Conf via PMBUS
2.4
-0.1
8.64
9.72
3.6
0.4
10.56
11.88
Vdc
Vdc
Vdc
Vdc
400
3.3
0.8
3.6
0.4
Khz
Vdc
Vdc
Vdc
Vdc
9.6
10.8
PMBUS
PMBUS GENERAL
PMBUS REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used.
Bus speed
Logic high input
Logic low input
Logic high output
Logic low output
2
0
2.4
-0.1
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MDC_DBE Series.A03Δ Page 13 of 32
DBE/DVE Series
FUNCTIONAL SPECIFICATIONS, DBE0125 (12V, 25A, CONT.)
Conditions ➀
PMBus
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Minimum
Typical/Nominal
Maximum
Units
PMBUS ADDRESSING
If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBUS address = 8*SA0 + SA1. SA0/SA1 value VS
resistor connected to GND.
0
10
kΩ
1
22
kΩ
2
33
kΩ
3
47
kΩ
4
68
kΩ
5
100
kΩ
6
150
kΩ
7
220
kΩ
PMBus MONITORING ACCURACY
VIN_READ
-3
3
%
VOUT_READ
-2
2
%
IOUT_READ
-1.5
1.5
A
TEMP_READ
-5
5
°C
DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION)
Fault Protection Speciﬁcations
Output Voltage, Over Voltage protection, OVP
VOUT_OV_FAULT_LIMIT, Conﬁgurable via PMBus
Factory default
>VOUT_OV_WARM_LIMIT
Fault response time
Factory default
Setpoint accuracy
Input Voltage, Input Over Voltage Protection
VIN_OV_FAULT_LIMIT (Conﬁgurable via
PMBus) ➃
Input Voltage, Input Under Voltage Protection,
UVLV
VIN_FAULT_LIMIT_LIMIT(Conﬁgurable via
PMBus) ➃
Over Current Protection, OCP
Over Temperature Protection, OTP
OT_FAULT_LIMIT (Conﬁgurable via PMBus) ➃
2
V
V
μS
V
%
110
V
15.6
200
80
-2
>VIN_OV_WARM_LIMIT
34
Delay
300
μS
Factory default
32
V
Setpoint accuracy
<VIN_UV_WARM_LIMIT <VIN_OV_FAULT_LIMIT
<VIN_OFF
Delay
Setpoint accuracy (Io)
(factory default)
IOUT_OC_FAULT_LIMIT (Conﬁgurable via
PMBus) ➃
14.4
8.1
>IOUT_OC_WARN_LIMT
Fault response time
OT_FAULT_LIMIT (factory default)
>OT_WARM_LIMIT
OTP accuracy (factory default)
Fault response time
-2
2
32
75
V
3
μS
%
A
34
A
300
-3
29
0
200
120/125
30
5
130
5
300
%
μS
°C
°C
°C
μS
MECHANICAL (Through Hole Models)
Outline Dimensions—open frame
WxLxH
Outline Dimensions—with baseplate
WxLxH
Weight—open frame
Weight—with baseplate
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Nickel subplate
Gold overplate
2.3x0.9x0.46
58.4x22.7x11.7
2.3x0.9x0.52
58.4x22.7x13.2
0.98
28
1.37
39
0.04 & 0.062
1.016 & 1.575
Copper alloy
50
5
Inches
mm
Inches
mm
Ounces
Grams
Ounces
Grams
Inches
mm
μ-inches
μ-inches
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MDC_DBE Series.A03Δ Page 14 of 32
DBE/DVE Series
FUNCTIONAL SPECIFICATIONS, DBE0125 (12V, 25A, CONT.)
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Baseplate Temperature
Storage Temperature
Thermal Protection/Shutdown—open frame
Thermal Protection/Shutdown with baseplate ➃
Electromagnetic Interference
Conducted, EN55022/CISPR22
Radiated, EN55022/CISPR22
RoHS rating
Notes
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Conditions ➀
Minimum
With derating
No derating according to IPC 9592
Vin = Zero (no power)
Measured at hotspot
-40
-40
-55
External ﬁlter required
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are speciﬁed with an external 1μF multi-layer ceramic and 10μF capacitors across their output pins.
➁ Over-current protection is non-latching with auto recovery (Hiccup)
➂ Regulation speciﬁcations describe the output voltage changes as the line voltage or load current
is varied from its nominal or midpoint value to either extreme.
Typical/Nominal
Maximum
Units
85
110
125
140
130
°C
°C
°C
°C
°C
B
Class
B
RoHS-6
Class
➃ When baseplate temperature is above the maximum operating baseplate temperature of 110°C
and below thermal protection temperature of 130°C, the module will continue working but the
thermal stress will be above the IPC9592 guide limit for long-term operation. It is not recommended to run in such a situation long-term.
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MDC_DBE Series.A03Δ Page 15 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TYPICAL PERFORMANCE DATA, DBE0125 (12Vout, 25A)
Efﬁciency vs. Load Current @ 25°C, with baseplate
Ripple & Noise @ 20MHz, Vin=48V, Iout=0A, Cout=0μf
100
95
Efﬁciency (%)
90
Vin = 75V
Vin = 48V
Vin = 36V
85
80
75
70
2.6
5.1
7.6
10.0
12.5
15.0
17.5
20.0
22.5
25.0
Load Current (A)
Ripple & Noise @ 20MHz, Vin=48V, Iout=25A, Cout=0μf
Enable Startup Delay, 48Vin, 0Aout, 10000μf
Enable Startup Delay, 48Vin, 25Aout, 10000μf
Transient Response, 50%-75%, 0.1Avs μs, 48Vin, Cout=0μf
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MDC_DBE Series.A03Δ Page 16 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Transverse
Longitudinal
Maximum Current Temperature Derating at sea level
(Vin = 36V, airﬂow from Vin- to Vin+)
Maximum Current Temperature Derating at sea level
(Vin = 36V, airﬂow from Vin to Vout)
25
25
20
20
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
15
10
Output Current (Amps)
Output Current (Amps)
DBE0125 (12Vout, 25A) PERFORMANCE DATA: TEMPERATURE DERATING WITH BASEPLATE
5
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
15
10
5
0
0
30
35
40
45
50
55
60
65
70
75
80
85
30
35
40
45
Ambient Temperature (°C)
20
20
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
Output Current (Amps)
Output Current (Amps)
25
5
65
70
75
80
85
80
85
80
85
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
15
10
5
0
0
30
35
40
45
50
55
60
65
70
75
80
85
30
35
40
45
Ambient Temperature (°C)
55
60
65
70
75
Maximum Current Temperature Derating at sea level
(Vin = 75V, airﬂow from Vin to Vout)
25
20
20
Output Current (Amps)
25
15
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
10
50
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 75V, airﬂow from Vin- to Vin+)
Output Current (Amps)
60
Maximum Current Temperature Derating at sea level
(Vin = 48V, airﬂow from Vin to Vout)
25
10
55
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airﬂow from Vin- to Vin+)
15
50
5
15
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
10
5
0
0
30
35
40
45
50
55
60
65
Ambient Temperature (°C)
70
75
80
85
30
35
40
45
50
55
60
65
70
75
Ambient Temperature (°C)
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MDC_DBE Series.A03Δ Page 17 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Transverse
Longitudinal
Maximum Current Temperature Derating at sea level
(Vin = 36V, airﬂow from Vin- to Vin+)
Maximum Current Temperature Derating at sea level
(Vin = 36V, airﬂow from Vin to Vout)
25
25
20
20
Output Current (Amps)
Output Current (Amps)
DBE0125 (12Vout, 25A) PERFORMANCE DATA: TEMPERATURE DERATING WITHOUT BASEPLATE
15
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
10
5
15
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
10
5
0
0
30
35
40
45
50
55
60
65
70
75
80
85
30
35
40
45
Ambient Temperature (°C)
25
25
20
20
Output Current (Amps)
Output Current (Amps)
60
65
70
75
80
85
80
85
80
85
Maximum Current Temperature Derating at sea level
(Vin = 48V, airﬂow from Vin to Vout)
15
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
5
15
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
10
5
0
0
30
35
40
45
50
55
60
65
70
75
80
85
30
35
40
45
Ambient Temperature (°C)
20
20
Output Current (Amps)
25
15
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
5
55
60
65
70
75
Maximum Current Temperature Derating at sea level
(Vin = 75V, airﬂow from Vin to Vout)
25
10
50
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 75V, airﬂow from Vin- to Vin+)
Output Current (Amps)
55
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airﬂow from Vin- to Vin+)
10
50
15
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
10
5
0
0
30
35
40
45
50
55
60
65
Ambient Temperature (°C)
70
75
80
85
30
35
40
45
50
55
60
65
70
75
Ambient Temperature (°C)
www.murata-ps.com/support
MDC_DBE Series.A03Δ Page 18 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
MECHANICAL SPECIFICATIONS
WITH BASEPLATE OPTION
0.150
OPEN FRAME
2.30 (58.4)
2
15
13
11
9
7
5
SIDE VIEW
PINS 1,2,4,:
Î0.040±0.0015(1.016±0.038)
Shoulder:
Î0.076±0.005(1.93±0.13)
PINS 5,16:
Î0.062±0.0015(1.575±0.038)
Shoulder:
Î0.098±0.005(2.49±0.13)
SEE NOTE 6
1
INPUT/OUTPUT CONNECTIONS
Designation
Function
1
+VIN
Positive Input
2
RC
Remote Control
4
–VIN
Negative Input
5
–VOUT
Negative Output
6
+S
Positive Remote Sense
7
–S
Negative Remote Sense
8
SA0
Address Pin 0
9
SA1
Address Pin 1
10
SCL
PMBus Clock
11
SDA
PMBus Data
12
PG
Power Good Output
13
DGND
PMBus Ground
14
SMBALERT
PMBus Alert Signal
15
CTRL
Secondary Remote Control
16
+VOUT
Positive Output
SQ.0.02
0.079
0.180
16
0.075
5
5
0.0
2
4
BOTTOM PIN SIDE VIEW
0.180
2.000 (50.8)
0.96
0.600
0.315
0.600
(15.24)
0.079
1
0.005 minimum clearance
between standoffs and
highest component
0.031 TYP
14
12
10
10PL8
6
RECOMMENDED FOOTPRINT
15
13
11
9
7
0.600
0.005 minimum clearance
between standoffs and
highest component
2.000 (50.8)
Pin
0.52 Max
SEE NOTE 7
L
L
0.45 Max
TOP VIEW
PINS 1,2,4,:
Î0.040±0.0015(1.016±0.038)
Shoulder:
Î0.076±0.005(1.93±0.13)
PINS 5,16:
Î0.062±0.0015(1.575±0.038)
Shoulder:
Î0.098±0.005(2.49±0.13)
0.600 (15.24)
2.000 (50.8)
0.150
TOP VIEW
0.079
4
SEE NOTE 6
M3 THREAD TYP 4PL
0.180
0.90 (22.9)
14
12
10
8
6
0.90 (22.9)
16
1
0.600
(15.24)
2.30 (58.4)
5
2.00
NOTES:
2.36
UNLESS OTHERWISE SPECIFIED:
1:M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER SURFACES
(SUCH AS HEATSINK) MUST NOT EXCEED 0.120''(3.0mm) DEPTH BELOW
THE SURFACE OF BASEPLATE
2:APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb(0.6Nm);
3:ALL DIMENSION ARE IN INCHES[MILIMETER];
4:ALL TOLERANCES: ×.××in ,±0.02in(×.×mm,±0.5mm)
×.×××in ,±0.01in(×.××mm,±0.25mm)
5:COMPONENT WILL VARY BETWEEN MODELS
6:STANDARD PIN LENGTH: 0.180 Inch
FOR 1 PIN LENGTH OPTION IN MODEL NAME,
THE LENGTH SHOULD BE 0.110 INCH
FOR 2 PIN LENGTH OPTION, PLEASE SEE THE PART NUMBER STRUCTURE ON P. 2;
USE STANDARD 2 PIN WITH PIN LENGTH TO 0.145 Inch
7:0.45" (Max) for the DBE0340 & DBE0540
0.46" (Max) for the DBE0125
0.039
0.079
Dimensions are in inches (mm shown for ref. only).
Third Angle Projection
Tolerances (unless otherwise speciﬁed):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only
and may vary between units.
www.murata-ps.com/support
MDC_DBE Series.A03Δ Page 19 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
SHIPPING TRAYS AND BOXES
Anti-static foam
Label
Label
For 1–42 pc quantity
For 43–84 pc quantity
SHIPPING TRAY
DBE/DVE modules are supplied in a 21-piece (3-by-7) shipping tray. The tray is an anti-static closed-cell polyethylene foam. Dimensions are shown
below.
0.910 (23.1) TYP
9.920
(252)
+0.000
-0.062
0.455 (11.6) TYP
0.735 (18.7)
9.920
(252)
+0.000
-0.062
0.625 (15.9) TYP
2.400 (61) TYP
Dimensions in inches (mm)
1.300 (33.0) TYP
1.06
(26.9)
0.25 R TYP
0.25 CHAMFER TYP (4-PL)
7.800
(198.1)
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MDC_DBE Series.A03Δ Page 20 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
PIH SHIPPING TRAYS AND BOXES
Anti-static foam
For 1-42 pc quantity
www.murata-ps.com/support
MDC_DBE Series.A03Δ Page 21 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TECHNICAL NOTES
Power Management Overview
The module includes a wide range of readable and conﬁgurable power
management features that are easy to implement with a minimum of external
components. Furthermore, the module includes protection features that
continuously protect the load from damage due to unexpected system faults.
The SMBALERT pin alerts the host if there is a fault in the module. The following product parameters can continuously be monitored by a host: Vout, Iout,
Vin, Temperature, and Power Good. The module is distributed with a default
conﬁguration suitable for a wide range operation in terms of Vin, Vout, and
load. All power management functions can be reconﬁgured using the PMBus
interface. The product provides a PMBus digital interface that enables the user
to conﬁgure many aspects of the device operation as well as monitor the input
and output parameters. Please contact Murata-PS for design support of special
conﬁgurations.
Soft-start Power Up
The default rise time of the ramp up is 20 ms. When starting by applying
input voltage the control circuit boot-up time adds an additional 10 ms delay.
The soft-start power up of the module can be reconﬁgured using the PMBus
interface.
Over Voltage Protection (OVP)
The module includes over voltage limiting circuitry for protection of the load.
The default OVP limit is 20% above the nominal output voltage. If the output
voltage surpasses the OVP limit, the module can respond in different ways.
The default response from an over voltage fault is to immediately shut down.
The device will continuously check for the presence of the fault condition,
and when the fault condition no longer exists the device will be re-enabled.
The OVP fault level and fault response can be reconﬁgured using the PMBus
interface.
Over Current Protection (OCP, Current limit)
The module includes current limiting circuitry for protection at continuous over
load. The default setting for the product is hicup mode. The current limit could
be conﬁgured by simply setting the IOUT_OC_FAULT_LIMIT to be greater than
the IOUT_OC_WARN_LIMIT. The maximum value that the current limit could be
set is 50A.
Switching Frequency Adjust Using PMBus
By default the switching frequency is set to 175-250 KHz variable frequency
control. The product is optimized at this frequency but it can be changed to 175
KHz ﬁxed frequency control. The thermal performance can be affected if the
switching frequency is changed when Vin is above 50 Vdc. The following graph
shows Frequency vs. Vin.
PMBus Interface
This module offers a PMBus digital interface that enables the user to conﬁgure
many characteristics of the device operation as well as to monitor the input
and output voltages, output current and device temperature. The module can
be used with any standard two-wire I2C or SMBus host device. In addition, the
module is compatible with PMBus version 1.2 and includes an SMBALERT line
to help alleviate bandwidth limitations related to continuous fault monitoring.
The module supports 100 kHz and 400 kHz bus clock frequency only.
Monitoring via PMBus
A system controller (host device) can monitor a wide variety of parameters
through the PMBus interface. The controller can monitor fault conditions by
monitoring the SMBALERT pin, which will be asserted when any number of
pre-conﬁgured fault or warning conditions occur. The system controller can
also continuously monitor any number of power conversion parameters including but not limited to the following:
• Input voltage
• Output voltage
• Output current
• Module temperature
Software Tools for Design and Production
For these modules Murata-PS provides software for conﬁguring and monitoring via the PMBus interface. For more information please contact your local
Murata-PS representative.
Power Good
The module provides Power Good (PG) ﬂag in the Status Word register that
indicates the output voltage is within a speciﬁed tolerance of its target level
and no fault condition exists. The Power Good pin default logic is negative and
it can be conﬁgured by MFR_PGOOD_POLARITY.
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MDC_DBE Series.A03Δ Page 22 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
PMBus Addressing
Figure 1 and the accompanying table display the recommended resistor values
for hard-wiring PMBus addresses (1% tolerance resistors recommended): The
address is set in the form of two octal (0 to 7) digits, with each pin setting one
digit. The SA1 pin sets the high order digit and SA0 sets the low order digit. The
resistor values for each digit is shown below.
The SA0 and SA1 pins can be conﬁgured with a resistor to GND according to
the following equation.
PMBus Address = 8 x (SA0value) + (SA1 value)
If the calculated PMBus address is 0d, 11d or 12d, default PMBus address is
assigned instead. From a system point of view, the user shall also be aware of
further limitations of the addresses as stated in the PMBus Speciﬁcation. It is
not recommended to keep the SA0 and SA1 pins left open.
PMBus Commands
The products are designed to be PMBus compliant. The following tables list
the implemented PMBus read commands. For more detailed information see
“PMBus Power System Management Protocol Speciﬁcation, Part I – General
Requirements, Transport and Electrical Interface” and “PMBus Power System
Management Protocol, Part II – Command Language.”
SA0
SA1
R1
R0
C0
C1
Figure 1. Schematic of Connection of Address Resistors
Digit (SA0, SA1 index)
Resistor Value [kΩ]
0
1
2
3
4
5
6
7
10
22
33
47
68
100
150
220
OVERALL
CMD
Command Name1
01h
02h
03h
10h
11h
12h
15h
16h
19h
20h
21h
22h
25h
26h
28h
40h
41h
42h
46h
47h
4Ah
4Fh
50h
51h
55h
56h
57h
58h
59h
5Ah
5Eh
5Fh
OPERATION2
ON_OFF_CONFIG3
CLEAR_FAULTS
WRITE_PROTECT
STORE_DEFAULT_ALL4
RESTORE_DEFAULT_ALL4
STORE_USER_ALL4
RESTORE_USER_ALL4
CAPABILITY
VOUT_MODE
VOUT_COMMAND
VOUT_TRIM
VOUT_MARGIN_HIGH
VOUT_MARGIN_LOW
VOUT_DROOP
VOUT_OV_FAULT_LIMIT
VOUT_OV_FAULT_RESPONSE5
VOUT_OV_WARN_LIMIT
IOUT_OC_FAULT_LIMIT
IOUT_OC_FAULT_RESPONSE6
IOUT_OC_WARN_LIMIT
OT_FAULT_LIMIT
OT_FAULT_RESPONSE5
OT_WARN_LIMIT
VIN_OV_FAULT_LIMIT
VIN_OV_FAULT_RESPONSE7
VIN_OV_WARN_LIMIT
VIN_UV_WARN_LIMIT
VIN_UV_FAULT_LIMIT
VIN_UV_FAULT_RESPONSE7
POWER_GOOD_ON
POWER_GOOD_OFF
SMBus
SMBus
Transaction Type: Transaction Type:
Writing Data
Reading Data
Write Byte
Write Byte
Send byte
Write Byte
Send byte
Send byte
Send byte
Send byte
N/A
N/A
Write Word
Write Word
Write Word
Write Word
Write Word11
Write Word
Write Byte
Write Word
Write Word
Write Byte
Write Word
Write Word
Write Byte
Write Word
Write Word
Write Byte
Write Word
Write Word
Write Word
Write Byte
Write Word
Write Word
Read Byte
Read Byte
N/A
Read Byte
N/A
N/A
N/A
N/A
Read Byte
Read Byte
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Byte
Read Word
Read Word
Read Byte
Read Word
Read Word
Read Byte
Read Word
Read Word
Read Byte
Read Word
Read Word
Read Word
Read Byte
Read Word
Read Word
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MDC_DBE Series.A03Δ Page 23 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
OVERALL (CONT.)
CMD
Command Name1
60h
61h
64h
65h
78h
79h
7Ah
7Bh
7Ch
7Dh
7Eh
88h
8Bh
8Ch
8Dh
8Eh
94h
95h
96h
98h
99h
9Ah
9Bh
9Dh
9Eh
A0h
A1h
A2h
A3h
A4h
A5h
A6h
A7h
A8h
A9h
B0h
B1h
C0h
D0h
DBh
DDh
DEh
E8h
E9h
EAh
F6h
F9h
FAh
FBh
FCh
TON_DELAY
TON_RISE12
TOFF_DELAY
TOFF_FALL12
STATUS_BYTE
STATUS_WORD
STATUS_VOUT
STATUS_IOUT
STATUS_INPUT
STATUS_TEMPERATURE
STATUS_CML
READ_VIN
READ_VOUT
READ_IOUT
READ_TEMPERATURE_18
READ_TEMPERATURE_29
READ_DUTY_CYCLE
READ_FREQUENCY
READ_POUT
PMBUS_REVISION
MFR_ID
MFR_MODEL10
MFR_REVISION10
MFR_DATE10
MFR_SERIAL10
MFR_VIN_MIN
MFR_VIN_MAX
MFR_IIN_MAX
MFR_PIN_MAX
MFR_VOUT_MIN
MFR_VOUT_MAX
MFR_IOUT_MAX
MFR_POUT_MAX
MFR_TAMBIENT_MAX
MFR_TAMBIENT_MIN
USER_DATA_00
USER_DATA_01
MFR_MAX_TEMP_1
MFR_VARIABLE_FREQUENCY_DISABLE
MFR_CURRENT_SHARE_CONFIG
MFR_PRIMARY_ON_OFF_CONFIG
MFR_PGOOD_POLARITY
MFR_VIN_OV_FAULT_HYS
MFR_VIN_UV_FAULT_HYS
MFR_OT_FAULT_HYS
MFR_CALIBRATION_STATUS
MFR_VIN_SENSE_CALIBRATION
MFR_IOUT_SENSE_CALIBRATION
MFR_VOUT_SET_POINT_CALIBRATION
MFR_SUPERVISOR_PASSWORD
SMBus
SMBus
Transaction Type: Transaction Type:
Writing Data
Reading Data
Write Word11
Write Word11
Write Word11
Write Word11
Write Byte
Write Word
Write Byte
Write Byte
Write Byte
Write Byte
Write Byte
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Block Write
Block Write
Block Write
Block Write
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Block Write
Block Write
N/A
Write Byte
Write Byte
Write Byte
Write Byte
Write Word
Write Word
Write Word
N/A
Write byte
Write Word
Write Word
Block Write
Read Word
Read Word
Read Word
Read Word
Read Byte
Read Word
Read Byte
Read Byte
Read Byte
Read Byte
Read Byte
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Byte
Block Read
Block Read
Block Read
Block Read
Block Read
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Block Read
Block Read
Read Word
Read Byte
Read Byte
Read Byte
Read Byte
Read Word
Read Word
Read Word
Read Byte
N/A
N/A
N/A
N/A
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MDC_DBE Series.A03Δ Page 24 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
OVERALL (CONT.)
Notes:
1. a) Unit restores the entire contents of the non-volatile User Store memory when power up
b) PEC is supported
c) Max bus speed: 400kHZ
d) SMBALERT# is supported
e) Linear data format used
f) addressing: If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default
PMBus address 119d is assigned instead.
2. Not supported items:
100101XXb Margin Low(Ignore Fault),
101001XXb On Margin High(Ignore Fault)
3. Restart delay of turned off by OPEATION or CONTROL or primary on/off is 200ms
4. Unit will shutdown 1 second for protection , then recover automatically.
5. Restart delay unit: 500ms, lower limit: 500ms.
Turn off delay unit: 0ms, lower limit: 0ms
if bits 7:6=11b, restart delay is 500ms
6. Restart delay unit and Turn off delay unit are same as note 5
Bits 7:6: 00b,01b,10b are not supported
7. Restart delay unit: 100ms, lower limit: 100ms.
Turn off delay unit:0ms, lower limit: 0ms
if bits 7:6=11b, restart delay is 100ms
8. Temperature of baseplate side
9. Temperature of pin side
10. Unit's actual information
11. Not available in Droop current share mode
12. Value of 0 is acceptable, which is the same as lower limit to unit.
MURATA-PS DEFINED COMMANDS (01-CFH REFER TO PMBUS 1.2 SPEC)
D0h: MFR_VARIABLE_FREQUENCY_DISABLE
Bits
Purpose
Value
7:1
0
Variable frequency
control
DBh: MFR_CURRENT_SHARE_CONFIG
Bits
Purpose
Value
7:1
0
Variable frequency
control
Controls how the
2 unit responds to the
CONTROL pin
Polarity of primary
1
ON/OFF logic
0
Meaning
0000000 Reserved
0
Current share disabled
1
Droop current share mode enabled
DDh: MFR_PRIMARY_ON_OFF_CONFIG
Bits
Purpose
Value
7:3
Meaning
0000000 Reserved
0
Turn on variable frequency control
1
Turn off variable frequency control
On/Off 2 pin
-On/Off 2
On/Off 2
VOUT_DROOP
TON_DELAY
TOFF_DELAY
TON_RISE
TOFF_FALL
-----conﬁgurable
conﬁgurable
conﬁgurable
conﬁgurable
conﬁgurable
locked to 0x000A locked to 0x0001 locked to 0x0000 locked to 0x0000 locked to 0x0000
Meaning
00000 Reserved
0
Unit ignores the primary ON/OFF pin
Unit requires the primary ON/OFF pin to be
1
asserted to start the unit.
0
Active low (Pull pin low to start the unit)
1
Active high (Pull high or open to start the unit)
0
Reserved
DEh: MFR_ PGOOD_POLARITY
Bits
Purpose
Value
Meaning
7:1
0000000 Reserved
Negative logic, output low if Vout rises to
0
Power good polarity
speciﬁc value
0
Positive logic, output high if Vout rises to
of pin 12
1
speciﬁc value
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MDC_DBE Series.A03Δ Page 25 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
STATUS WORD AND BYTE (GREEN = SUPPORTED)
STATUS_VOUT
7 VOUT_OV_FAULT
6 VOUT_OV_WARNING
5 VOUT_UV_WARNING
4 VOUT_UV_FAULT
3 VOUT_MAX Warning
2 TON_MAX_FAULT
1 TOFF_MAX_WARNING
0 VOUT Tracking Error
STATUS_IOUT
7 IOUT_OC_FAULT
6 IOUT_OC_LV_FAULT
5 IOUT_OC_WARNING
4 IOUT_UC_FAULT
3 Current Share Fault
2 In Power Limiting Mode
1 POUT_OP_FAULT
0 POUT_OP_WARNING
STATUS_WORD
7 VOUT
6 IOUT/POUT
5 INPUT
4 MFR_SPECIFIC
3 POWER_GOOD#
2 FANS
1 OTHER
0 UNKNOWN
7 BUSY
6 OFF
5 VOUT_OV_FAULT
4 IOUT_OC_FAULT
3 VIN_UV_FAULT
2 TEMPERATURE
1 CML
0 NONE OF THE ABOVE
STATUS_INPUT
7 VIN_OV_FAULT
6 VIN_OV_WARNING
5 VIN_UV_WARNING
4 VIN_UV_FAULT
2 IIN_OC_FAULT
1 IIN_OC_WARNING
0 PIN_OP_WARNING
STATUS_MFR_SPECIFIC
Manufacturer Deﬁned
Manufacturer Deﬁned
Manufacturer Deﬁned
Manufacturer Deﬁned
Manufacturer Deﬁned
Manufacturer Deﬁned
Manufacturer Deﬁned
Manufacturer Deﬁned
STATUS_FANS_1_2
STATUS_TEMPERATURE
7 OT_FAULT
6 OT_WARNING
5 UT_WARNING
4 UT_FAULT
3 Reserved
2 Reserved
1 Reserved
0 Reserved
STATUS_OTHER
7 Reserved
6 Reserved
5 Input A Fuse/Breaker Fault
4 Input B Fuse/Breaker Fault
3 Input A OR-ing Device Fault
2 Input B OR-ing Device Fault
1 Output OR-ing Device Fault
0 Reserved
7 Fan 1 Fault
6 Fan 2 Fault
5 Fan 1 Warning
4 Fan 2 Warning
3 Fan 1 Speed Override
2 Fan 2 Speed Override
1 Air Flow Fault
0 Air Flow Warning
STATUS_FANS_3_4
STATUS_CML
7 Invalid/Unsupported Command
6 Invalid/Unsupported Data
5 Packet Error Check Failed
4 Memory Fault Detected
3 Processor Fault Detected
2 Reserved
1 Other Communication Fault
0 Other Memory Or Logic Fault
7 Fan 3 Fault
6 Fan 4 Fault
5 Fan 3 Warning
4 Fan 4 Warning
3 Fan 3 Speed Override
2 Fan 4 Speed Override
1 Reserved
0 Reserved
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MDC_DBE Series.A03Δ Page 26 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TECHNICAL NOTES (CONT.)
Parallel Load Sharing (S Option, Droop Load Sharing)
Two or more converters may be connected in parallel at both the input and
output terminals to support higher output current (total power, see ﬁgure 2) or
to improve reliability due to the reduced stress that results when the modules
are operating below their rated limits. For applications requiring current share,
followed the guidelines below. The products have a pre-conﬁgured voltage
droop. The stated output voltage set point is at no load. The output voltage
will decrease when the load current is increased. The voltage will drop droop
0.35V while load reaches max load. Our goal is to have each converter contribute nearly identical current into the output load under all input, environmental and load conditions.
Using Parallel Connections – Load Sharing (Power Boost)
Direct Connection Parallel Guidelines

Use a common input power source. The input voltage must be between 36V
and 75V.

+Vout and –Vout of all parallel units should be connected with a balance
output impedance; +Sense and –Sense should be connected together (see
ﬁgure 2).

Turn all units off before conﬁguring the output voltage via PMBus commands; all units must have the same output voltage conﬁguration.

It is recommended to turn on one unit ﬁrst and then turn other unit (s) on
after the output for the ﬁrst one has settled. Turn on the next unit (s) after the
previous unit reaches its regulated output voltage for at least 10mS. Users
can use a different control signal to turn each unit on.

Users have the option to use a common primary or secondary Remote On/
Off logic control signal to turn on modules at the same time after the input
voltage rises above 36V.

Do not use PMBus to control unit On/Off when parallel operation is used.

First power up the parallel system (all converters) with a load not exceeding
the rated load of 60%*35A*UNITS_QUANTITY and allow converters to settle
(typically 10-50mS) before applying full load (90% load is recommended).
If the loads are downstream POL converters, power these up shortly after
the converter has reached steady state output. Also be aware of the delay
caused by charging up external bypass capacitors.

When converters are connected in parallel, allow for a safety factor of at
least 10%. Up to 90% of max output current can be used from each module.

It is critical that the PCB layout incorporates identical connections from each
module to the load; use the same trace rating and airﬂow/thermal environments. If you add input ﬁlter components, use identical components and
layout.

For Power-down, do not soft-off (GUI) while in parallel operation. Power
down units by primary or secondary On/Off signal. Turn units off at the
same time or one by one to avoid the OCP being triggered.
CAUTION: This converter is not internally fused. To avoid danger to persons
or equipment and to retain safety certiﬁcation, the user must connect an
external fast-blow input fuse as listed in the speciﬁcations. Be sure that the PC
board pad area and etch size are adequate to provide enough current so that
the fuse will blow with an overload.
Using Parallel Connections – Redundancy (N+1)
The redundancy connections require external user supplied “OR”ing diodes or
“OR”ing MOSFETs for reliability purposes. The diodes allow for an uninterruptable power system operation in case of a catastrophic failure (shorted output)
by one of the converters.
The diodes should be identical part numbers to enhance balance between
the converters. The default factory nominal voltage should be sufﬁciently
matched between converters. The OR’ing diode system is the responsibility of
the user. Be aware of the power levels applied to the diodes and possible heat
sink requirements.
Schottky power diodes with approximately 0.3V drops or “OR”ing MOSFETs
may be suitable in the loop whereas 0.7 V silicon power diodes may not be
advisable. In the event of an internal device fault or failure of the mains power
modules on the primary side, the other devices automatically take over the
entire supply of the loads. In the basic N+1 power system, the “N” equals the
number of modules required to fully power the system and “+1” equals one
back-up module that will take over for a failed module. If the system consists
of two power modules, each providing 50% of the total load power under
normal operation and one module fails, another one delivers full power to the
load. This means you can use smaller and less expensive power converters as
the redundant elements, while achieving the goal of increased availability.
Thermal Shutdown
Extended operation at excessive temperature will initiate overtemperature
shutdown triggered by a temperature sensor outside the PWM controller. This
operates similarly to overcurrent and short circuit mode. The inception point
of the overtemperature condition depends on the average power delivered,
the ambient temperature and the extent of forced cooling airﬂow. Thermal
shutdown uses only the hiccup mode (autorestart) and PMBus conﬁgurable
hysteresis.
Start Up Considerations
When power is ﬁrst applied to the DC-DC converter, there is some risk of start
up difﬁculties if you do not have both low AC and DC impedance and adequate
regulation of the input source. Make sure that your source supply does not allow
the instantaneous input voltage to go below the minimum voltage at all times.
Use a moderate size capacitor very close to the input terminals. You may
need two or more parallel capacitors. A larger electrolytic or ceramic cap supplies the surge current and a smaller parallel low-ESR ceramic cap gives low
AC impedance.
Remember that the input current is carried both by the wiring and the
ground plane return. Make sure the ground plane uses adequate thickness
copper. Run additional bus wire if necessary.
Input Fusing
Certain applications and/or safety agencies may require fuses at the inputs of
power conversion components. Fuses should also be used when there is the
possibility of sustained input voltage reversal which is not current-limited. For
greatest safety, we recommend a fast blow fuse installed in the ungrounded
input supply line.
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MDC_DBE Series.A03Δ Page 27 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Figure 2. Load Sharing Block Diagram
Input Under-Voltage Shutdown and Start-Up Threshold
Under normal start-up conditions, converters will not begin to regulate properly
until the rising input voltage exceeds and remains at the Start-Up Threshold
Voltage (see Speciﬁcations). Once operating, converters will not turn off until
the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent
restart will not occur until the input voltage rises again above the Start-Up
Threshold. This built-in hysteresis prevents any unstable on/off operation at a
single input voltage. The over/under-voltage fault level and fault response and
hysterisis can be conﬁgured via the PMBus interface.
including long distributed wiring to a remote power supply. The converter will
operate with no additional external capacitance if these conditions are met.
For best performance, we recommend installing a low-ESR capacitor
immediately adjacent to the converter’s input terminals. The capacitor should
be a ceramic type such as the Murata GRM32 series or a polymer type. Make
sure that the input terminals do not go below the undervoltage shutdown voltage at all times. More input bulk capacitance may be added in parallel (either
electrolytic or tantalum) if needed.
Start-Up Time
Assuming that the output current is set at the rated maximum, the Vin to Vout
Start-Up Time (see Speciﬁcations) is the time interval between the point when
the rising input voltage crosses the Start-Up Threshold and the fully loaded
output voltage enters and remains within its speciﬁed accuracy band. Actual
measured times will vary with input source impedance, external input capacitance, input voltage slew rate and ﬁnal value of the input voltage as it appears
at the converter.
These converters include a soft start circuit to moderate the duty cycle of its
PWM controller at power up, thereby limiting the input inrush current.
The On/Off Remote Control interval from On command to Vout (ﬁnal ±5%)
assumes that the converter already has its input voltage stabilized above the
Start-Up Threshold before the On command. The interval is measured from the
On command until the output enters and remains within its speciﬁed accuracy
band. The speciﬁcation assumes that the output is fully loaded at maximum
rated current. Similar conditions apply to the On to Vout regulated speciﬁcation
such as external load capacitance and soft start circuitry.
Recommended Output Filtering
The converter will achieve its rated output ripple and noise with no additional
external capacitor. However, the user may install more external output capacitance to reduce the ripple even further or for improved dynamic response.
Again, use low-ESR ceramic (Murata GRM32 series) or polymer capacitors.
Mount these close to the converter. Measure the output ripple under your load
conditions.
Use only as much capacitance as required to achieve your ripple and noise
objectives. Excessive capacitance can make step load recovery sluggish or
possibly introduce instability. Do not exceed the maximum rated output capacitance listed in the speciﬁcations.
Recommended Input Filtering
The user must assure that the input source has low AC impedance to provide
dynamic stability and that the input supply has little or no inductive content,
Minimum Output Loading Requirements
All models regulate within speciﬁcation and are stable under no load to full
load conditions.
Input Ripple Current and Output Noise
All models in this converter series are tested and speciﬁed for input reﬂected
ripple current and output noise using designated external input/output components, circuits and layout as shown in the ﬁgures below. The Cbus and Lbus
components simulate a typical DC voltage bus.
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MDC_DBE Series.A03Δ Page 28 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TO
OSCILLOSCOPE
CURRENT
PROBE
+Vin
VIN
+
–
+
–
+Vout
LBUS
CBUS
C1
CIN
-Vin
C2
SCOPE
RLOAD
-Vout
CIN = 220μF, ESR < 700mΩ @ 100kHz
CBUS = 220μF, ESR < 100mΩ @ 100kHz
LBUS = 12μH
Figure 3. Measuring Input Ripple Current
C1 = 1μF; C2 = 10μF
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 4. Measuring Output Ripple and Noise (PARD)
Thermal Shutdown (OTP, UTP)
To prevent many over temperature problems and damage, these converters
include thermal shutdown circuitry. If environmental conditions cause the
temperature of the DC-DCs to rise above the Operating Temperature Range
up to the shutdown temperature, an on-board electronic temperature sensor
will power down the unit. When the temperature decreases below the turn-on
threshold set in the command recover temp is (OT_FAULT_LIMIT-MFR_OT_
FAULT_HYS), the hysteresis is deﬁned in general electrical speciﬁcation
section. The OTP and hysteresis of the module can be reconﬁgured using the
PMBus. The OTP and UTP fault limit and fault response can be conﬁgured via
the PMBus.
CAUTION: If you operate too close to the thermal limits, the converter may
shut down suddenly without warning. Be sure to thoroughly test your application to avoid unplanned thermal shutdown.
Temperature Derating Curves
The graphs in this data sheet illustrate typical operation under a variety of
conditions. The Derating curves show the maximum continuous ambient air
temperature and decreasing maximum output current which is acceptable
under increasing forced airﬂow measured in Linear Feet per Minute (“LFM”).
Note that these are AVERAGE measurements. The converter will accept brief
increases in current or reduced airﬂow as long as the average is not exceeded.
Note that the temperatures are of the ambient airﬂow, not the converter
itself which is obviously running at higher temperature than the outside air.
Also note that “natural convection” is deﬁned as very ﬂow rates which are not
using fan-forced airﬂow. Depending on the application, “natural convection” is
usually about 30-65 LFM but is not equal to still air (0 LFM).
Murata Power Solutions makes Characterization measurements in a closed
cycle wind tunnel with calibrated airﬂow. We use both thermocouples and an
infrared camera system to observe thermal performance. As a practical matter,
it is quite difﬁcult to insert an anemometer to precisely measure airﬂow in
most applications. Sometimes it is possible to estimate the effective airﬂow if
you thoroughly understand the enclosure geometry, entry/exit oriﬁce areas and
the fan ﬂowrate speciﬁcations.
CAUTION: If you exceed these Derating guidelines, the converter may have
an unplanned Over Temperature shut down. Also, these graphs are all collected
near Sea Level altitude. Be sure to reduce the derating for higher altitude.
Output Short Circuit Condition
The short circuit condition is an extension of the “Current Limiting” condition.
When the monitored peak current signal reaches a certain range, the PWM
controller’s outputs are shut off thereby turning the converter “off.” This is
followed by an extended time out period. This period can vary depending on
other conditions such as the input voltage level. Following this time out period,
the PWM controller will attempt to re-start the converter by initiating a “normal
start cycle” which includes softstart. If the “fault condition” persists, another
“hiccup” cycle is initiated. This “cycle” can and will continue indeﬁnitely until
such time as the “fault condition” is removed, at which time the converter will
resume “normal operation.” Operating in the “hiccup” mode during a fault
condition is advantageous in that average input and output power levels are
held low preventing excessive internal increases in temperature.
Remote On/Off Control
The DBE series modules are equipped with both primary (On/Off 1, enabled,
pull up internal) and secondary (On/Off 2, disabled, pull up internal) control pins
for increased system ﬂexibility. Both are conﬁgurable via PMBus. The On/Off
pins are TTL open-collector and/or CMOS open-drain compatible. (See general
speciﬁcations for threshold voltage levels. See also MFR_PRIMARY_ON_OFF_
CONFIG section.)
Negative-logic models are on (enabled) when the On/Off is grounded or
brought to within a low voltage (see speciﬁcations) with respect to –Vin.
The device is off (disabled) when the On/Off is left open or is pulled high to
+13.5Vdc with respect to –Vin. The On/Off function allows the module to be
turned on/off by an external device switch.
Positive-logic models are enabled when the On/Off pin is left open or is
pulled high to +13.5V with respect to –Vin. Positive-logic devices are disabled
when the On/Off is grounded or brought to within a low voltage (see speciﬁcations) with respect to –Vin. For voltage levels for On/Off 2 signal see functional
speciﬁcations.
The restart delay for this module to turn On/Off by the On/Off control pin is
100ms.
On/Off 1 or 2 Control status
Not ignored
On/Off 1 or 2 pin
OPEN
PULL HIGH
PULL LOW
P LOGIC
ON
ON
OFF
Ignored
N LOGIC
OFF
OFF
ON
P LOGIC
ON
ON
ON
N LOGIC
ON
ON
ON
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MDC_DBE Series.A03Δ Page 29 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
On/Off 1 can be conﬁgured by PMBus command MFR_PRIMARY_ON_OFF_
CONFIG (DDh); default conﬁguration is not ignored; required On/Off 1 control
pin to be asserted to start the unit.
On/Off 2 can be conﬁgured by PMBUS command ON_OFF_CONFIG (02h);
default conﬁguration is ignored; treat it as always ON.
DBE's On/Off status is dependent on On/Off 1 control, On/Off 2 control, and
OPERATION (PMBus command) status; all three must be ON to turn DBE on; if
one of them is OFF, unit will be turned off.
Output Capacitive Load
These converters do not require external capacitance added to achieve rated
speciﬁcations. Users should only consider adding capacitance to reduce
switching noise and/or to handle spike current load steps. Install only enough
capacitance to achieve noise objectives. Excess external capacitance may
cause degraded transient response and possible oscillation or instability.
Remote Sense Input
Use the Sense inputs with caution. Sense is normally connected at the load.
Sense inputs compensate for output voltage inaccuracy delivered at the load.
Contact and PCB resistance
losses due to IR drops
+VOUT
−VIN
I OUT
+SENSE
Sense Current
ON/OFF
CONTROL
LOAD
Sense Return
−SENSE
I OUT Return
+VIN
-VOUT
Contact and PCB resistance
losses due to IR drops
Figure 5. Remote Sense Circuit Conﬁguration
Soldering Guidelines
This is done by correcting IR voltage drops along the output wiring and the
current carrying capacity of PC board etch. This output drop (the difference
between Sense and Vout when measured at the converter) should not exceed
0.5V. Consider using heavier wire if this drop is excessive. Sense inputs also
improve the stability of the converter and load system by optimizing the control
loop phase margin.
Note: The Sense input and power Vout lines are internally connected through
low value resistors to their respective polarities so that the converter can
operate without external connection to the Sense. Nevertheless, if the Sense
function is not used for remote regulation, the user should connect +Sense to
+Vout and –Sense to –Vout at the converter pins.
The remote Sense lines carry very little current. They are also capacitively
coupled to the output lines and therefore are in the feedback control loop to
regulate and stabilize the output. As such, they are not low impedance inputs
and must be treated with care in PC board layouts. Sense lines on the PCB
should run adjacent to DC signals, preferably Ground. In cables and discrete
wiring, use twisted pair, shielded tubing or similar techniques.
Any long, distributed wiring and/or signiﬁcant inductance introduced into the
Sense control loop can adversely affect overall system stability. If in doubt, test
your applications by observing the converter’s output transient response during
step loads. There should not be any appreciable ringing or oscillation. You
may also adjust the output trim slightly to compensate for voltage loss in any
external ﬁlter elements. Do not exceed maximum power ratings.
Please observe Sense inputs tolerance to avoid improper operation:
[Vout(+) −Vout(-)] − [Sense(+) −Sense(-)] ≤ 10% of Vout
Output overvoltage protection is monitored at the output voltage pin, not the
Sense pin. Therefore excessive voltage differences between Vout and Sense
together with trim adjustment of the output can cause the overvoltage protection circuit to activate and shut down the output.
Power derating of the converter is based on the combination of maximum
output current and the highest output voltage. Therefore the designer must
ensure:
(Vout at pins) x (Iout) ≤ (Max. rated output power)
PIH Soldering Proﬁle
280
Murata Power Solutions recommends the speciﬁcations below when installing these
converters. These speciﬁcations vary depending on the solder type. Exceeding these
speciﬁcations may cause damage to the product. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your
production environment may differ; therefore please thoroughly review these guidelines
with your process engineers.
Wave Solder Operations for through-hole mounted products (THMT)
230
180
Reﬂow Zone
time above 217°C
45 -75 sec
Soaking Zone
(120 Sec max)
130
<2°C/sec
80
For Sn/Ag/Cu based solders:
Maximum Preheat Temperature
115° C.
Maximum Pot Temperature
270° C.
Maximum Solder Dwell Time
7 seconds
For Sn/Pb based solders:
Maximum Preheat Temperature
105° C.
Maximum Pot Temperature
250° C.
Maximum Solder Dwell Time
6 seconds
30
-20 0
Preheat Zone
(240 Sec max)
30
60
90
120
150
180
210
240
270
300
Optimal Peak 245°C, Max Peak 260°C.
Lead-Free Solder type: SAC305
Duration Time above Liquidus: 45 to 75 seconds
Ramp less than 1°C per second across liquidus
Cooling rate less than 3°C per second
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MDC_DBE Series.A03Δ Page 30 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Emissions Performance
Murata Power Solutions measures its products for conducted emissions
against the EN 55022 and CISPR 22 standards. Passive resistance loads are
employed and the output is set to the maximum voltage. If you set up your
own emissions testing, make sure the output load is rated at continuous power
while doing the tests.
The recommended external input and output capacitors (if required) are
included. Please refer to the fundamental switching frequency. All of this
information is listed in the Product Speciﬁcations. An external discrete ﬁlter is
installed and the circuit diagram is shown below.
[3] Conducted Emissions Test Results
VCC
RTN
L1
C1 C2
C3
L2
+
C4 C5
C6 C7
+
DC/DC
DBE0125V2
C12
LOAD
-48V
C8
C9
C10
GND
C11
Graph 1. Conducted emissions performance, Positive Line,
CISPR 22, Class B, full load
GND
Figure 6. Conducted Emissions Test Circuit
[1] Conducted Emissions Parts List
Reference
C1, C2, C3, C4, C5
C6
L1, L2
C8, C9, C10, C11
C7
C12
Part Number
Description
Vendor
SMD CERAMIC-100VGRM32ER72A105KA01L
Murata
1000nF-X7R-1210
SMD CERAMIC 100V-100nFGRM319R72A104KA01D
Murata
±10%-X7R-1206
COMMON MODE-473uHPG0060T
Pulse
±25%-A
SMD CERAMIC 630V-0.22uFGRM55DR72J224KW01L
Murata
±10%-X7R-2220
Aluminum100V-220UfUHE2A221MHD
Nichicon
±10%-long lead
NA
[2] Conducted Emissions Test Equipment Used
Hewlett Packard HP8594L Spectrum Analyzer – S/N 3827A00153
2Line V-networks LS1-15V 50Ω/50Uh Line Impedance Stabilization Network
Graph 2. Conducted emissions performance, Negative Line,
CISPR 22, Class B, full load
[4] Layout Recommendations
Most applications can use the ﬁltering which is already installed inside the
converter or with the addition of the recommended external capacitors. For
greater emissions suppression, consider additional ﬁlter components and/or
shielding. Emissions performance will depend on the user’s PC board layout,
the chassis shielding environment and choice of external components. Please
refer to Application Note GEAN-02 for further discussion.
Since many factors affect both the amplitude and spectra of emissions, we
recommend using an engineer who is experienced at emissions suppression.
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MDC_DBE Series.A03Δ Page 31 of 32
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
IR Transparent
optical window
Unit under
test (UUT)
IR Video
Camera
Precision
low-rate
anemometer
3” below UUT
Ambient
temperature
sensor
Airﬂow
collimator
Vertical Wind Tunnel
Murata Power Solutions employs a computer controlled
custom-designed closed loop vertical wind tunnel, infrared
video camera system, and test instrumentation for accurate
airﬂow and heat dissipation analysis of power products.
The system includes a precision low ﬂow-rate anemometer,
variable speed fan, power supply input and load controls,
Variable
temperature gauges, and adjustable heating element.
speed fan
The IR camera monitors the thermal performance of the
Unit Under Test (UUT) under static steady-state conditions. A
special optical port is used which is transparent to infrared
wavelengths.
Both through-hole and surface mount converters are
soldered down to a 10" x 10" host carrier board for realistic
heat absorption and spreading. Both longitudinal and transverse airﬂow studies are possible by rotation of this carrier
Heating
board since there are often signiﬁcant differences in the heat
element
dissipation in the two airﬂow directions. The combination of
adjustable airﬂow, adjustable ambient heat, and adjustable
Input/Output currents and voltages mean that a very wide
range of measurement conditions can be studied.
The collimator reduces the amount of turbulence adjacent
to the UUT by minimizing airﬂow turbulence. Such turbulence inﬂuences the effective heat transfer characteristics
and gives false readings. Excess turbulence removes more
heat from some surfaces and less heat from others, possibly
causing uneven overheating.
Both sides of the UUT are studied since there are different thermal gradients on each side. The adjustable heating
element and fan, built-in temperature gauges, and no-contact
IR camera mean that power supplies are tested in real-world
conditions.
Figure 7. Vertical Wind Tunnel
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansﬁeld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speciﬁcations are subject to change without
notice.
© 2016 Murata Power Solutions, Inc.
www.murata-ps.com/support
MDC_DBE Series.A03Δ Page 32 of 32

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