UDQ Series
www.murata-ps.com
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
Output (V)
Current (A)
Input (Vdc)
9
39
36-60
12
35
36-75
Typical unit
FEATURES
PRODUCT OVERVIEW
Industry standard five pin Quarter-brick
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 UDQ
series provides a fully regulated, digitally controlled
DC output in a ¼-brick format that will support the
Advanced Bus Converter (ABC) industry standard
footprint for isolated board mounted power modules. The UDQ series supports advances in power
conversion technology including a digital interface
supporting the PMBus protocol for communications
to power modules.
The UDQ is an isolated, regulated, 420W-12Vout
quarter brick that supports the TNV input voltage
Optional digital PMBus interface
High Efficiency
Fast dynamic response
±1% Vout accuracy
2250Vdc input to output isolation voltage
(Functional)
Optional baseplate
PMBus Rev 1.2 compliant
Certified to UL/EN/IEC 60950-1, CAN/CSA-C22.2
No. 60950-1, 2nd Edition, safety approvals and
EN55022/CISPR22 standards
range of 36V–75V with a typical efficiency of
95.5%. The converter also offers high input to
output isolation up to 2250 VDC as required for
Power over Ethernet (PoE) applications.
The UDQ series is suitable for applications covering MicroTCA, servers and storage applications,
networking equipment, telecommunications equipment, Power over Ethernet (PoE), fan trays, wireless
networks, wireless pre-amplifiers, and industrial
and test equipment, along with other applications
requiring a regulated 12V.
Power Management (PMBus Option)
Applications
Configurable soft-start/stop
Distributed power architectures
Precision delay and ramp-up
Intermediate bus voltage applications
Voltage sequencing and margining
Servers and storage applications
Voltage/Current/temp monitoring
Network equipment
Configurable output voltage
Power good
For full details go to
www.murata-ps.com/rohs
PM
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 1 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
ORDERING GUIDE
Root Model
Input
(Volts)
Output
(Volts)
Current
(Amps)
Power
(Watts)
UDQ2100/100
UDQ2204/001
36-60
9
39
351
36-75
12
35
420
The UDQ2100/100 is assembled with components and materials designed to withstand lead-free
thermal paste-in-hole process (PIH). Dry pack packaging is also included as shown on page 17.
PART NUMBER EXPLANATION: UDQ0004/001 (UDQn1n2n3n4/n5n6n7)
U = Unipolar
DQ = Digital Quarter brick
PRODUCT NUMBER
UDQ
Mechanical Pin Option
Mechanical option
Hardware Option
Configuration file
Option Designation
n1
n2
n3 n4
n5 n6 n7
n1
X
n2
n3
n4
x
x
x
/
/
/
/
/
n5
n6
n7
x
x
x
Description
0 = Standard Pin Length 5.33mm (0.210")
1 = Surfact mount option
2 = Lead length 3.69mm / Cut (0.145")
3 = Lead Length 4.57mm / Cut (0.180")
4 = Lead Length 2.79mm / Cut (0.110")
0 = Open frame
1 = Baseplate
2 = Baseplate with GND-pin
00 = 36-60 Vin, 4-9.9 Vout adjusted, with digital interface
04 = 36-75 Vin, 4-13.2 Vout adjusted, with digital interface
001 = 12 V Standard configuration for 36-75 Vin, n3n4 = 04
100 = 9V standard configuration for 36-60 Vin, high capacitive load
xxx = Application Specific Configuration
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MDC_UDQ-Series.B05 Page 2 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
FUNCTIONAL SPECIFICATIONS
Conditions ➁
ABSOLUTE MAXIMUM RATINGS
Minimum
Typical/Nominal
Maximum
Units
Full power operation
Vdc
80, 65 ➀
Operating or non-operating,
Input Voltage, Transient
Vdc
100, 80 ➀
100 mS max. duration
Isolation Voltage
Input to output, with and without baseplate
2250
Vdc
Input Reverse Polarity
None, install external fuse
None
Vdc
On/Off Remote Control
Power on or off, referred to -Vin
-0.3
18
Vdc
Storage Temperature Range
Vin = Zero (no power)
-55
125
°C
Operating Temperature
See derating curves
-40
85
°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 or recommended.
Input Voltage, Continuous
DIGITAL INTERFACE SPECIFICATIONS (PMBus MONITORING)
Logic Input/Output specs.
Logic Input low (VIL)
Logic input high (VIH)
Logic output low (VOL)
Logic output high (VOH)
Bus free time T (BUF)
PMBus monitoring accuracy
VIN_READ
VOUT_READ
IOUT_READ
IOUT_READ
TEMP_READ
Fault Protection Specifications
Input Under Voltage Lockout, UVLV
(Output Voltage)
Over/Under Voltage protection, OVP/UVP
Over Current Protection, OCP
Over Temperature Protection, OTP
CTRL, SAO, SA1, PG, SCL, SDA
CTRL, PG, SALERT, SCL, SDA, IoL = 6mA
CTRL, PG, SALERT, SCL, SDA, IoH = -6mA
1.1
➂
2.7
1.3
Input Voltage
Output Voltage
Output Current (50-100% of max Io)
Output Current (10% of max Io)
Temperature
-2
-1
-6
-0.6
-5
Factory default
Setpoint accuracy
Hysteresis (factory default)
Hysteresis (Configurable via PMBus of theshold
range) ➁
Delay
VOUT_UV_FAULT_LIMIT (factory default)
VOUT_UV_FAULT_LIMIT (Configurable via
PMBus,) ➁
VOUT_OV_FAULT_LIMIT (factory default)
VOUT_OV_FAULT_LIMIT (Configurable via
PMBus) ➁
Fault response time
Setpoint accuracy (Io)
IOUT_OC_FAULT_LIMIT (factory default)
IOUT_OC_FAULT_LIMIT (Configurable via PMBus) ➁
Fault response time
OTP_FAULT_LIMIT (factory default)
OTP_FAULT_LIMIT (Configurable via PMBus) ➁
OTP hysteresis (factory default)
OTP hysteresis (Configurable via PMBus) ➁
Fault response time
0.25
V
V
V
V
μS
2
1
6
0.6
5
%
%
%
A
°C
2
2
V
%
V
300
0
μS
V
2.1
±0.2
±0.1
±0.15
±3.5
33
-2
0
V
0
16
15.6
Vout
16
200
-6
6
41
0
100
200
125
-50
125
10
0
125
300
V
V
V
μS
%
A
A
μS
°C
°C
°C
°C
μS
Notes
➀ For UDQ2100/100 model.
➁ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are specified with an external 330μF external input capacitor and 3.5mF || 10μF || 1μF capacitors across
their output pins.
➂ PMBus timing parameters according to PMBus spec.
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MDC_UDQ-Series.B05 Page 3 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
FUNCTIONAL SPECIFICATIONS, UDQ2100/100 (9VOUT, 39A, 351W)
Conditions ➂
INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold
Undervoltage shutdown
Turn-On/Turn-Off Hysteresis
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)
Pre-biased startup
Fast blow
Rising input voltage
Falling input voltage
Minimum
Typical/Nominal
Maximum
Units
36
48
34
32
1
35
33
2
60
20
36
34
Vdc
A
Vdc
Vdc
Vdc
7.738
10.484
0.015
0.05
50
20
Monotonic
7.89
10.692
0.1
150
50
A
A
A2-Sec.
A
mA
mA
140
147
KHz
24
30
mS
12
50
±200
15
100
mS
μSec
mV
Vin = nominal
Vin = minimum
Vin = 48V.
Iout = minimum, unit=ON
External output voltage < Vset
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Ramp-up time
Dynamic Load Response
Dynamic Load Peak Deviation
133
From Vin connection to 90% Vo 10-100% of
max Io
From 10-90% of Vo (10-100% of max Io
50-75-50% load step to 1% error band
same as above
GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Voltage, input to baseplate
Isolation Voltage, output to baseplate
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
Vin=48V, half load
Vin=48V, full load
Input to output, with and without baseplate
With baseplate
With baseplate
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
94.9
93.5
95.9
94.5
%
%
1500
750
750
functional
100
2200
Vdc
Vdc
Vdc
MΩ
pF
Yes
TBD
Hours x 103
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MDC_UDQ-Series.B05 Page 4 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
FUNCTIONAL SPECIFICATIONS, UDQ2100/100 (9VOUT, 39A, 351W) (CONT.)
Conditions ➀
OUTPUT
Total Output Power
Voltage
Setting Accuracy
Over-Voltage Protection
Output Voltage Range
Current
Output Current Range
Minimum Load
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
Maximum Output Capacitance
Minimum
Typical/Nominal
Maximum
Units
0
351
354.12
W
8.92
9
11.7
9.08
11.8
9.9
Vdc
Vdc
Vdc
39
No minimum load
44
39
A
47
A
Hiccup technique, autorecovery within 1% of Vout
2
3
A
Output shorted to ground, no damage
Continuous
Hiccup current limiting
Non-latching
±0.133
±0.128
%
%
At 100% load, no trim
Magnetic Feedback
User-adjustable (see operating information)
4
0
90% of Vnom., after warmup
41
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
50
2.2
110
mV pk-pk
0.02
3.9
6
% of Vnom./°C
mF
125
85
125
128
°C
°C
°C
ENVIRONMENTAL
Operating Ambient Temperature Range
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating
With derating
Vin = Zero (no power)
Measured at hotspot
External filter is required
External filter necessary
-40
-55
122
B
RoHS-6
Class
Notes
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are specified with an external 300μF external input capacitor and 3.5mF || 10μF || 1μF capacitors across
their output pins.
➁ PMBus timing parameters according to PMBus spec.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 5 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
PERFORMANCE DATA, UDQ2100/100
Efficiency vs. Line Voltage and Load Current @ +25°C
Power Dissipation vs. Load Current @ +25°C
98
30
25
94
Power Dissipation (Watts)
Efficiency (%)
96
VIN = 36V
VIN = 48V
VIN = 60V
20
15
10
92
VIN = 36V
VIN = 48V
VIN = 60V
5
90
4.0
4.0
7.9
11.8
15.7
19.6
23.4
27.3
31.2
35.1
7.9
11.8
15.7
38.9
19.6
23.4
27.3
31.
35.1
38.9
Output Load Curre nt (Amps)
Load Curre nt (Amps)
With Baseplate
Without Baseplate
Maximum Current Temperature Derating at sea level
Vin = 36V (air flow from Pin 1 to Pin 4 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 36V (air flow from Pin 1 to Pin 4 on PCB)
40
38
Output Current (Amps)
Output Current (Amps)
36
34
32
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)
28
26
24
22
30
35
40
45
50
55
60
65
70
75
80
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
Natural Convection
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
85
35
40
45
50
55
60
65
70
75
80
85
80
85
Ambient Temperature (°C)
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
Vin = 48V (air flow from Pin 1 to Pin 4 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 48V (air flow from Pin 1 to Pin 4 on PCB)
40
40
38
38
36
36
Output Current (Amps)
Output Current (Amps)
34
34
32
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)
28
26
32
30
28
26
Natural Convection
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
24
22
24
20
18
22
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_UDQ-Series.B05 Page 6 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
PERFORMANCE DATA, UDQ2100/100
With Baseplate
Without Baseplate
Maximum Current Temperature Derating at sea level
Vin = 53V (air flow from Pin 1 to Pin 4 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 53V (air flow from Pin 1 to Pin 4 on PCB)
40
40
38
38
36
36
Output Current (Amps)
Output Current (Amps)
34
34
32
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)
28
26
32
30
28
26
Natural Convection
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
24
22
24
20
18
22
30
35
40
45
50
55
60
65
70
75
80
30
85
35
40
45
Ambient Temperature (°C)
50
55
60
65
70
75
80
85
80
85
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
Vin = 60V (air flow from Pin 1 to Pin 4 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 60V (air flow from Pin 1 to Pin 4 on PCB)
40
40
38
38
36
36
Output Current (Amps)
Output Current (Amps)
34
34
32
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)
28
26
32
30
28
26
Natural Convection
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
24
22
24
20
18
22
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_UDQ-Series.B05 Page 7 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
PERFORMANCE DATA, UDQ2100/100
Start-up Delay (Vin = 48V, Vout = nom, Io = 39A, Cload = 6000μf, Ta = +25°C)
Ch1 = Vout, Ch2 = Vin
Enable Start-up Delay (Vin = 48V, Vout = nom, Io = 39A, Cload = 6000μf, Ta = +25°C)
Ch1 = Vout, Ch2 = Enable.
Step load Transient Response (Vin = 48V, Iout = 50-75-50% of Imax, Cload = 6000μf)
Ch1 = Vout, Ch2 = Iout
Output Ripple & Noise (Vin = 48V, Iout = 0A, Cload = 2200μf, Ta = 25°C,
BW = 20Mhz)
Output Ripple & Noise (Vin = 48V, Iout = 39A, Cload = 2200μf, Ta = 25°C,
BW = 20Mhz)
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MDC_UDQ-Series.B05 Page 8 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
FUNCTIONAL SPECIFICATIONS, UDQ2204/001 (12VOUT, 35A, 420W)
Conditions ➀
INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold
Undervoltage shutdown
Turn-On/Turn-Off Hysteresis
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)
Pre-biased startup
Back Ripple Current
Fast blow
Rising input voltage
Falling input voltage
Minimum
Typical/Nominal
Maximum
Units
36
48
34
32
1
35
33
2
75
20
36
34
Vdc
A
Vdc
Vdc
Vdc
9.162
12.281
0.015
0.05
69
8.3
Monotonic
80
9.259
12.411
0.1
150
15
A
A
A2-Sec.
A
mA
mA
100
mA
133
140
24
12
200
±200
147
30
15
250
KHz
mS
mS
μSec
mV
95.4
94.5
96.4
95.5
%
%
1500
750
750
100
2200
Vdc
Vdc
Vdc
MΩ
pF
Vin = nominal
Vin = minimum
Vin = 48V.
Iout = minimum, unit=ON
External output voltage < Vset
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Delay
Ramp-up time
Dynamic Load Response
Dynamic Load Peak Deviation
Vin On to 90% Vout regulated
Remote On to 90% Vout regulated
50-75-50% load step to 1% of Vout
same as above
GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Voltage, input to baseplate
Isolation Voltage, output to baseplate
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
Vin=48V, half load
Vin=48V, full load
Input to output, with and without baseplate
With baseplate
With baseplate
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
Yes
TBD
Hours x 103
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 9 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
FUNCTIONAL SPECIFICATIONS, UDQ2204/001 (12VOUT, 35A, 420W) (CONT.)
Conditions ➀
OUTPUT
Total Output Power
Voltage
Setting Accuracy
Output Voltage tolerance band
Over-Voltage Protection
Output Voltage Range
Current
Output Current Range
Minimum Load
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
Recommended Capacitive Load
Minimum
Typical/Nominal
Maximum
Units
0
420
424.4
W
11.88
11.76
12
12.12
12.24
15.7
13.2
Vdc
35
No minimum load
41
35
A
44
A
Hiccup technique, autorecovery within 1% of Vout
0.2
0.3
A
Output shorted to ground, no damage
Continuous
Hiccup current limiting
Non-latching
±0.23
±0.166
%
%
60
150
mV pk-pk
0.02
3.5
6
% of Vnom./°C
mF
125
85
125
128
°C
°C
°C
At 100% load, no trim
0-100% of max Io.
Magnetic Feedback
User-adjustable (see operating information)
4
0
90% of Vnom., after warmup
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
Full resistive load, low ESR
37
0.1
15.6
12
Vdc
Vdc
ENVIRONMENTAL
Operating Ambient Temperature Range
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating
With derating
Vin = Zero (no power)
Measured at hotspot
External filter is required
External filter necessary
-40
-55
122
B
RoHS-6
Class
Notes
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are specified with an external 330μF external input capacitor and 3.5mF || 10μF || 1μF capacitors across
their output pins.
➁ PMBus timing parameters according to PMBus spec.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 10 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
PERFORMANCE DATA, UDQ2204/001
Efficiency vs. Line Voltage and Load Current @ +25°C
Power Dissipation vs. Load Current @ +25°C
98
30
25
94
Power Dissipation (Watts)
Efficiency (%)
96
VIN = 36V
VIN = 48V
VIN = 53V
VIN = 60V
VIN = 75V
92
20
15
VIN = 36V
VIN = 48V
VIN = 53V
VIN = 60V
VIN = 75V
10
5
0
90
3.6
3.6
7.1
10.6
14.1
17.6
21.1
24.6
28.1
31.6
7.1
10.6
14.1
35.1
17.6
21.1
24.6
28.1
31.6
35.1
Output Load Curre nt (Amps)
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
With Baseplate
Without Baseplate
Maximum Current Temperature Derating at sea level
Vin = 36V (air flow from Pin 1 to Pin 4 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 36V (air flow from Pin 1 to Pin 4 on PCB)
Output Current (Amps)
Output Current (Amps)
Load Curre nt (Amps)
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
35
40
45
50
55
60
65
70
75
80
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
0.33 m/s (65 LFM)
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
85
35
40
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)
35
40
45
50
55
60
65
Ambient Temperature (°C)
60
65
70
75
80
85
80
85
Maximum Current Temperature Derating at sea level
Vin = 48V (air flow from Pin 1 to Pin 4 on PCB)
Output Current (Amps)
Output Current (Amps)
Maximum Current Temperature Derating at sea level
Vin = 48V (air flow from Pin 1 to Pin 4 on PCB)
30
55
Ambient Temperature (°C)
Ambient Temperature (°C)
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
50
70
75
80
85
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
0.33 m/s (65 LFM)
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
35
40
45
50
55
60
65
70
75
Ambient Temperature (°C)
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 11 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
With Baseplate
Without Baseplate
Maximum Current Temperature Derating at sea level
Vin = 60V (air flow from Pin 1 to Pin 4 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 60V (air flow from Pin 1 to Pin 4 on PCB)
Output Current (Amps)
Output Current (Amps)
PERFORMANCE DATA, UDQ2204/001
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
35
40
45
50
55
60
65
70
75
80
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
0.33 m/s (65 LFM)
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
85
35
40
45
50
55
60
65
70
75
80
85
80
85
Ambient Temperature (°C)
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
Vin = 75V (air flow from Pin 1 to Pin 4 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 75V (air flow from Pin 1 to Pin 4 on PCB)
36
34
34
32
30
32
Output Current (Amps)
Output Current (Amps)
28
30
28
26
24
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
22
20
18
26
24
22
20
18
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
16
14
12
10
16
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_UDQ-Series.B05 Page 12 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
PERFORMANCE DATA, UDQ2204/001
Start-up Delay (Vin=48V, Iout=35A, Co=6000uF, Ta=+25°C) Ch1=Vout, Ch4=Vin.
On/Off Enable Start-up. (Vin=48V, Iout=35A, Co=6000uF, Ta=+25°C) Ch1=Vout,
Ch3=Enable
Step Load Transient Response (Vin=48v, Iout=50-75-50% of Imax, Cload=3.5mf)
Ch1=Vout, Ch2=Iout
Output Ripple & Noise(Vin=48V, Iout=0A, Cload=100uF, Ta=+25°C, BW=20Mhz)
Output Ripple & Noise(Vin=48V, Iout=35A, Cload=100uF, Ta=+25°C, BW=20Mhz)
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 13 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
MECHANICAL SPECIFICATIONS (OPEN FRAME)
0.210 (5.33) (NOTE 1)
OTHER OPTIONS:
0.110" (2.79) LONG
0.145" (3.69) LONG
0.180" (4.57) LONG
(11.30)
0.445
MAX
(58.3)
2.30
(36.8)
1.45
END VIEW
MTG
PLANE
END VIEW
TOP VIEW
SIDE VIEW
INPUT/OUTPUT CONNECTIONS
Pin
Function
1
+ Vin
2
Remote On/Off *
3
No Pin
4
- Vin
5
- Vout
6
+ Sense
7
- Sense
8
SA0
9
SA1
10
SCL
11
SDA
12
PG SYNC
13
D GND
14
SALERT
15
CONTROL CS
16
+ Vout
(1.00)
0.039
MIN
3x
(1.02)
0.040
BETWEEN
MTG PLANE AND
CONDUCTIVE
COMPONENTS
(1.52)
2x 0.060
(50.80)
2.000
(25.4)
1.00
(2.00)
0.079
10 x
0.020 (0.51)
(8.00)
0.315
(7.62)
0.300
4
6
(15.24)
0.600
The Remote On/Off can be provided with
either positive or negative logic.
(7.62)
0.300
5
7
CL
2
14
1
15
16
(2.00)
0.079
CL
1. ALTERNATE PIN LENGTHS AVAILABLE
(CONTACT MURATA-PS FOR INFORMATION)
2. COMPONENTS SHOWN FOR REF ONLY
3. DIMENSIONS ARE IN INCHES (mm)
4. PIN LOCATION DIMENSIONS APPLY AT
CIRCUIT BOARD LEVEL
BOTTOM VIEW
(1.00)
0.039
Dimensions are in inches (mm shown for ref. only).
Third Angle Projection
MATERIAL:
0.040 PINS: COPPER ALLOY
0.060 PINS: COPPER ALLOY
FINISH: (ALL PINS)
GOLD (3-5u") OVER NICKEL (50u" MIN)
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 14 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
MECHANICAL SPECIFICATIONS (WITH BASEPLATE)
(58.3)
2.30
0.210 (5.33) (NOTE 1)
OTHER OPTIONS:
0.110" (2.79) LONG
0.145" (3.69) LONG
0.180" (4.57) LONG
(13.18)
0.519
MAX
(47.24)
1.860
0.93 (23.62)
REF
(36.8)
1.45
0.515
(13.08)
(26.16)
1.030
CL
2X M3X0.5
0.15 MAX SCREW
PENETRATION
END VIEW
CL
TOP VIEW
INPUT/OUTPUT CONNECTIONS
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Function
+ Vin
Remote On/Off *
Pin to GND (optional)
- Vin
- Vout
+ Sense
- Sense
SA0
SA1
SCL
SDA
PG SYNC
D GND
SALERT
CONTROL CS
+ Vout
The Remote On/Off can be provided with
either positive or negative logic.
ANODIZED ALUMINUM
BASEPLATE ('B' OPTION)
SIDE VIEW
(1.00)
0.039
MIN
(1.02)
3x 0.040
(4x WITH
GND PIN)
BETWEEN
MTG PLANE AND
CONDUCTIVE
COMPONENTS
(1.52)
2x 0.060
(50.80)
2.000
(25.4)
1.00
10 x
0.020 (0.51)
(2.00)
0.079
(8.00)
0.315
(7.62)
0.300
4
3
(15.24)
0.600
(7.62)
0.300
5
6
7
CL
2
14
1
1. ALTERNATE PIN LENGTHS AVAILABLE
(CONTACT MURATA-PS FOR INFORMATION)
2. COMPONENTS SHOWN FOR REF ONLY
3. DIMENSIONS ARE IN INCHES (mm)
4. PIN LOCATION DIMENSIONS APPLY AT
CIRCUIT BOARD LEVEL
MTG
PLANE
END VIEW
15
16
3.81
.150
(2.00)
0.079
CL
BOTTOM VIEW
(1.00)
0.039
Dimensions are in inches (mm shown for ref. only).
Third Angle Projection
MATERIAL:
0.040 PINS: COPPER ALLOY
0.060 PINS: COPPER ALLOY
FINISH: (ALL PINS)
GOLD (3-5u") OVER NICKEL (50u" MIN)
OPTIONAL PIN #3 CONNECTS
TO BASEPLATE AND IS ELECTRICALLY
ISOLATED FROM CONVERTER.
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 15 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
RECOMMENDED FOOTPRINT (VIEW THROUGH CONVERTER)
TOP VIEW
FINISHED HOLE SIZES
@ PINS 1-4
CL
(PER IPC-D-275, LEVEL C)
0.048-0.062
(PRI)
(1.30)
10x
0.051 PTH WITH
MINIMUM ANNULAR RING
@ PINS 6 THRU 15
(SEC)
(2.00)
0.079
1
(37.3)
1.47
(7.62)
0.300
CL
16
(4.00)
0.157
14
3
(3.81)
0.150
(4.00)
0.157
4
(7.62)
0.300
0.100 MIN
@ 1-4
FOR PIN
SHOULDERS
15
2
6
(7.62)
0.300
CL
5
(2.00)
0.079
(2.00)
0.079
(1.00)
0.039
(25.4)
1.00
7
(7.62)
0.300
(50.80)
2.000
FINISHED HOLE SIZES
@ PINS 5 & 16
(PER IPC-D-275, LEVEL C)
0.070-0.084
Dimensions are in inches (mm shown for ref. only).
(58.9)
2.32
Third Angle Projection
IT IS RECOMMENDED THAT NO PARTS BE PLACED BENEATH CONVERTER
(HATCHED AREA). THE STANDOFFS ASSURE MINIMUM CLEARANCE IS MET TO ACHIEVE
2250VDC ISOLATION. OPEN VIAS OR TRACES BENEATH CONVERTER ARE ACCEPTABLE
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 16 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
STANDARD PACKAGING
9.92
REF
9.92
REF
2.75±0.25
CLOSED HEIGHT
CARTON ACCOMMODATES
TWO (2) TRAYS YIELDING
30 CONVERTERS PER CARTON
MPQ=30
EACH STATIC DISSIPATIVE
POLYETHYLENE FOAM TRAY
ACCOMMODATES 15 CONVERTERS
IN A 3 X 5 ARRAY
11.00 ±.25
10.50 ±.25
0.88
REF
DRY-PACK PACKAGING
ID LABEL
BAG, MOISTURE BARRIER
DESICCANT
PACKET
DATE OF BAG SEALING
(MM/DD/YYYY)
MSL2 CAUTION LABEL
HUMIDITY INDICATOR CARD
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 17 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
TECHNICAL NOTES
Power Management Overview
This module is prepared with a PMBus interface. 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 protects the load
from damage due to unexpected system faults. The SALERT pin alerts the
unit if there is a fault in the module. The following product parameters can
continuously be monitored by a host: Vin, Vout/current, duty cycle and internal
temperature. The module is distributed with a default configuration suitable for
a wide range operation in terms of Vin, Vout, and load. The configuration is kept
in an internal Non-Volatile Memory (NVM). 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.
Remote On/Off Control
The UDQ series modules are equipped with both Primary (Remote On/Off,
Internal pull up resistor) and secondary (CONTROL CS, disabled and floating)
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).
The standard product is provided with 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 +6Vdc 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 +6V 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.
To turn the module On or Off the remote On/Off pin should be left open for
a minimum of 150μS. The module can be power up automatically without
the need for control signals or a switch; the remote On/Off pin can be wired
directly to –Vin or disabled via the 0xE3 command. The logic option for the primary remote On/Off control is configured via 0xE3 command using the PMBus.
CONTROL CS (Secondary On/Off)
The CONTROL CS pin can be configured via the PMBus. The default configuration is disabled and floating. The output can be configured to an internal pull up
resistor up to 3.3V using the MFR_MULTI_PIN_CONG (0xF9) PMBus command.
The CONTROL CS pin can be left open when not being used. The logic options
for the secondary On/Off can be negative or positive logic. The logic for the
secondary remote control is configured via ON_OFF_CONFIG (0x02) command
using the PMBus command. See also MFR_MULTI_PIN_CONFIG section.
Output Voltage Adjust (Trim) Using PMBus
The output voltage of this module can be reconfigured using the PMBus
interface.
Margin Up/Down Controls
These controls allow the output voltage to be momentarily adjusted, either up
or down, by a nominal 10%. This provides a suitable method for dynamically
testing the operation of the load circuit over its supply margin or range. It can
also be used to confirm the function of supply voltage supervisors. The margin
up and down levels of the module can be reconfigured using the PMBus
interface.
Soft-start Power Up
The default rise time of the ramp up is 10 ms. When starting by applying input
voltage the control circuit boot-up time adds an additional 15 ms delay. The
soft-start power up of the module can be reconfigured using the PMBus interface. The DLS variants have a pre-configured ramp up time of 25 ms.
Over Voltage Protection (OVP)
The module includes over voltage limiting circuitry for protection of the load.
The default OVP limit is 30% 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 re-configured using the PMBus
interface.
Over Current Protection (OCP, Current limit)
The module includes current limiting circuitry for protection at continuous overload. The default setting for the product is hicup mode if the maximum output
current is exceeded and the output voltage is below 0.3×Vout, set in command
IOUT_OC_LV_FAULT_LIMIT (0x48). Above the trip voltage value in command
0x48 the product will continue operate while maintaining the output current at
the value set by IOUT_OC_FAULT_LIMIT (0x46). The load distribution should be
designed for the maximum output short circuit current specified. Droop Load
Share alternates (DLS) will enter hic-up mode, with a trip voltage, 0.04×Vout,
set in command IOUT_OC_LV_FAULT_LIMIT (0x48). Above the trip voltage
in command (0x48) the product will continue operate while maintaining the
output current at the value set by IOUT_OC_FAULT_LIMIT (0x46). The over current protection of the module can be reconfigured using the PMBus interface.
Pre-bias Start-up Capability
The module has a Pre-bias start up functionality and will not sink current
during start up if a Pre-bias source is present at the output terminals. If the
Pre-bias voltage is lower than the target value set in VOUT_COMMAND (0x21),
the module will ramp up to the target value. If the Pre-bias voltage is higher
than the target value set in VOUT_COMMAND (0x21), the product will ramp
down to the target value and in this case sink current for a limited of time set
in the command TOFF_MAX_WARN_LIMIT (0x66).
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
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 18 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
Bit 0
Secondary Remote Control
0
Pull up/down resistor enable 1)
1
0
1
0
1
0
1
0
1
0
1
DLS, Power Good Push-pull, PMBus Control (0x86)
DLS, Power Good Push-pull, Sec RC w/ pull up/down (0x87)
DLS, Power Good High Z when active, PMBus Control (0xA6)
DLS, Power Good High Z when active, Sec RC w/ pull up/down (0xA7)
Stand alone, PMBus Control (0x00)
Stand alone, Sec RC w/ pull up/down (0x01)
Stand alone, Power Good Push-pull, PMBus Control (0x04)
Stand alone, Power Good Push-pull, Sec RC w/ pull up/down (0x05)
Stand alone, Power Good High Z when active, PMBus Control (0x24)
Stand alone, Power Good High Z when active, Sec RC w/ pull up/down (0x25)
Bit 7:6
00 = Stand alone
01 = Slave (N/A)
10 = DLS
11 = Master (N/A)
Bit 5
Power Good High Z
when active
Bit 4
Tracking enable
(N/A)
Bit 3
External reference
(N/A)
Bit 2
Power Good
Enable
Bit 1
Reserved
1) When not used with PMBus,
the CTRL input can be
internally pulled up or down
depending on if it is active
high or low. When active low
it will be pulled up and vice
versa
and no fault condition exists. If specified in section Connections, the product
also provides a PG signal output. The Power Good signal is by default configured as active low, Push-pull and can be reconfigured via the PMBus interface.
The Power Good output can be configured as Push-pull or “High Z when active”
to permit AND’ing of parallel devices. It is not recommended to use Push-pull
when paralleling PG-pins, see MFR_MULTI_PIN_CONFIG.
Switching Frequency Adjust Using PMBus
The switching frequency is set to 140 kHz as default but this can be reconfigured via the PMBus interface. The product is optimized at this frequency but
can run at lower and higher frequency, (125-150 kHz). The electrical performance can be affected if the switching frequency is changed.
MFR_MULTI_PIN_CONFIG
The MFR_MULTI_PIN_CONFIG (0xF9) command enables or disables different
functions inside the product. This command can be configured according to the
table for different functions.
The MFR_MULTI_PIN_CONFIG can be reconfigured using the PMBus
interface. Default configuration is set to Power Good Push-Pull (0x04) for stand
alone variants and DLS Power Good Push-Pull (0x86) for Droop Load Share
variants.
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 SALERT line to
help alleviate bandwidth limitations related to continuous fault monitoring. The
module supports 100 kHz and 400 kHz bus clock frequency only. The PMBus
signals, SCL, SDA and SALERT require passive pull-up resistors as stated in the
SMBus Specification. Pull-up resistors are required to guarantee the rise time
as follows:
t = Rp Cp ≤ μs
where Rp is the pull-up resistor value and Cp is the bus load. The maximum
allowed bus load is 400 pF. The pull-up resistor should be tied to an external
supply between 2.7 to 5.5 V, which should be present prior to or during powerup. If the proper power supply is not available, voltage dividers may be applied.
Note that in this case, the resistance in the equation above corresponds to
parallel connection of the resistors forming the voltage divider.
It is recommended to always use PEC (Packet Error Check) when communicating via PMBus. For these products it is a requirement to use PEC when using
Send Byte to the device, for example command “RESTORE_DEFAULT_ALL”.
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 SALERT pin, which will be asserted when any number of preconfigured 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
• Internal junction temperature
• Switching frequency (Monitors the set value not actual frequency)
• Duty cycle
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.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 19 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
PMBus Addressing
The following figure and table show recommended resistor values with min
and max voltage range for hard-wiring PMBus addresses (series E12, 1% tolerance resistors suggested):
PMBus Commands
The products are PMBus compliant. The following table lists 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.
DESIGNATION
CMD
PROT
01h
02h
10h
No
No
No
20h
21h
22h
23h
24h
25h
26h
27h
29h
2Ah
32h
33h
35h
36h
38h
39h
No
No
No
Yes
No
No
No
No
Yes
Yes
No
No
No
No
Yes
Yes
40h
41h
42h
43h
44h
45h
46h
47h
48h
4Ah
4Fh
50h
51h
52h
53h
54h
55h
56h
57h
58h
59h
5Ah
5Eh
5Fh
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
60h
61h
62h
63h
64h
65h
66h
No
No
No
No
No
No
No
Standard PMBus Commands
Control Commands
SA0
SA1
R1
R0
OPERATION
ON_OFF_CONFIG
WRITE_PROTECT
Output Commands
Figure 1. Schematic of Connection of Address Resistors
SA0/SA1 Index
RSA0/RSA1 [kΩ]
0
1
2
3
4
5
6
7
10
22
33
47
68
100
150
220
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 0, 11 or 12, PMBus address 127 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.
I2 C/SMBus – Timing
SCL
SDA
tset
thold
Figure 2. Setup and hold times timing diagram
The setup time, tset, is the time data, SDA, must be stable before the rising
edge of the clock signal, SCL. The hold time thold, is the time data, SDA, must be
stable after the rising edge of the clock signal, SCL. If these times are violated
incorrect data may be captured or meta-stability may occur and the bus communication may fail. When configuring the product, all standard SMBus protocols
must be followed, including clock stretching. Additionally, a bus-free time delay
between every SMBus transmission (between every stop & start condition) must
occur. Refer to the SMBus specification, for SMBus electrical and timing requirements. Note that an additional delay of 5 ms has to be inserted in case of storing
the RAM content into the internal non-volatile memory.
VOUT_MODE
VOUT_COMMAND
VOUT_TRIM
VOUT_CAL_OFFSET
VOUT_MAX
VOUT_MARGIN_HIGH
VOUT_MARGIN_LOW
VOUT_TRANSITION_RATE
VOUT_SCALE_LOOP
VOUT_SCALE_MONITOR
MAX_DUTY
FREQUENCY_SWITCH
VIN_ON
VIN_OFF
IOUT_CAL_GAIN
IOUT_CAL_OFFSET
Fault Commands
VOUT_OV_FAULT_LIMIT
VOUT_OV_FAULT_RESPONSE
VOUT_OV_WARN_LIMIT
VOUT_UV_WARN_LIMIT
VOUT_UV_FAULT_LIMIT
VOUT_UV_FAULT_RESPONSE
IOUT_OC_FAULT_LIMIT
IOUT_OC_FAULT_RESPONSE
IOUT_OC_LV_FAULT_LIMIT
IOUT_OC_WARN_LIMIT
OT_FAULT_LIMIT
OT_FAULT_RESPONSE
OT_WARN_LIMIT
UT_WARN_LIMIT
UT_FAULT_LIMIT
UT_FAULT_RESPONSE
VIN_OV_FAULT_LIMIT
VIN_OV_FAULT_RESPONSE
VIN_OV_WARN_LIMIT
VIN_UV_WARN_LIMIT
VIN_UV_FAULT_LIMIT
VIN_UV_FAULT_RESPONSE
POWER_GOOD_ON
POWER_GOOD_OFF
Time Setting Commands
TON_DELAY
TON_RISE
TON_MAX_FAULT_LIMIT
TON_MAX_FAULT_RESPONSE
TOFF_DELAY
TOFF_FALL
TOFF_MAX_WARN_LIMIT
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 20 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
DESIGNATION
CMD
PROT
03h
78h
79h
7Ah
7Bh
7Ch
7Dh
7Eh
7Fh
No
No
No
No
No
No
No
No
No
88h
8Bh
8Ch
8Dh
8Eh
94h
Cmd
95h
No
No
No
No
No
No
Prot
No
B0h
No
98h
99h
9Ah
9Bh
9Ch
9Dh
9Eh
No
Yes
Yes
Yes
Yes
Yes
Yes
11h
12h
15h
16h
19h
Yes
No
No
No
No
D0h
D3h
DCh
DDh
DEh
E1h
E2h
E3h
E5h
E7h
F0h
F1h
F2h
F3h
F4h
F5h
F6h
F8h
F9h
FAh
FBh
FEh
No
Yes
No
Yes
Yes
No
No
No
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
Status Commands (Read Only)
CLEAR_FAULTS
STATUS_BYTES
STATUS_WORD
STATUS_VOUT
STATUS_IOUT
STATUS_INPUT
STATUS_TEMPERATURE
STATUS_CML
STATUS_OTHER
Monitior Commands (Read Only)
READ_VIN
READ_VOUT
READ_IOUT
READ_TEMPERATURE_1
READ_TEMPERATURE_2
READ_DUTY_CYCLE
Designation
READ_FREQUENCY
Configuration and Control Commands
USER_DATA_00
Identification Commands (Read Only)
PMBUS_REVISION
MFR_ID
MFR_MODEL
MFR_REVISION
MFR_LOCATION
MFR_DATE
MFR_SERIAL
Supervisory Commands
STORE_DEFAULT_ALL
RESTORE_DEFAULT_ALL
STORE_USER_ALL
RESTORE_USER_ALL
CAPABILITY
Product Specific Commands
MFR_POWER_GOOD_POLARITY
MFR_VIN_SCALE_MONITOR
MFR_SELECT_TEMP_SENSOR
MFR_VIN_OFFSET
MFR_VOUT_OFFSET_MONITOR
MFR_TEMP_OFFSET_INT
MFR_REMOTE_TEMP_CAL
MFR_REMOTE_CTRL
MFR_DEAD_BAND_DELAY
MFR_TEMP_COEFF
MFR_DEBUG_BUFF
MFR_SETUP_PASSWORD
MFR_DISABLE_SECURITY_ONCE
MFR_DEAD_BAND_IOUT_THRESHOLD
MFR_SECURITY_BIT_MASK
MFR_PRIMARY_TURN
MFR_SECONDARY_TURN
MFR_ILIM_SOFTSTART
MFR_MULTI_PIN_CONFIG
MFR_DEAD_BAND_VIN_THRESHOLD
MFR_DEAD_BAND_VIN_IOUT_HYS
MFR_RESTART
Notes:
CMD is short for Command.
PROT is short for commands that are protected with security mask.
Thermal Shutdown
Extended operation at excessive temperature will initiate overtemperature
shutdown triggered by a temperature sensor inside 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).
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.
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 can
be configured via the PMBus interface.
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.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 21 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
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,
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.
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.
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.
TO
OSCILLOSCOPE
CURRENT
PROBE
+Vin
VIN
+
–
+
–
LBUS
CBUS
CIN
-Vin
CIN = 33μF, ESR < 700mΩ @ 100kHz
CBUS = 220μF, ESR < 100mΩ @ 100kHz
LBUS = 12μH
Figure 3. Measuring Input Ripple Current
Minimum Output Loading Requirements
All models regulate within specification and are stable under no load to full
load conditions. Operation under no load might however slightly increase
output ripple and noise.
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/DC’s 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
+Vout
C1
C2
C3
SCOPE
RLOAD
-Vout
C1 = 3.5mF; C2 = 1μF; C3 = 10μF
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 4. Measuring Output Ripple and Noise (PARD)
threshold set in the command OT_WARM_LIMIT (0X51), the hysteresis is
defined in general electrical specification section. The OTP and hysteresis of
the module can be re-configured using the PMBus interface. The module has
also an under temperature protection. The OTP and UTP fault limit and fault
response can be configured via the PMBus. Note: using the fault response
“continue without interruption” may cause permanent damage to the module.
There is a small amount of hysteresis to prevent rapid on/off cycling.
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 Fusing
The converter is extensively protected against current, voltage and temperature
extremes. However your output application circuit may need additional protection. In the extremely unlikely event of output circuit failure, excessive voltage
could be applied to your circuit. Consider using an appropriate fuse in series
with the output.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 22 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
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.
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.
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
Contact and PCB resistance
losses due to IR drops
+VOUT
−VIN
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)
Soldering Guidelines
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)
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
Reflow Solder Operations for surface-mount products (SMT)
For Sn/Ag/Cu based solders:
Preheat Temperature
Less than 1 °C. per second
Time over Liquidus
45 to 75 seconds
Maximum Peak Temperature
260 °C.
Cooling Rate
Less than 3 °C. per second
For Sn/Pb based solders:
Preheat Temperature
Less than 1 °C. per second
Time over Liquidus
60 to 75 seconds
Maximum Peak Temperature
235 °C.
Cooling Rate
Less than 3 °C. per second
I OUT
Recommended Lead-free Solder Reflow Profile (SMT)
+SENSE
Sense Current
TRIM
LOAD
Sense Return
−SENSE
I OUT Return
+VIN
200
Temperature (°C)
ON/OFF
CONTROL
Peak Temp.
235-260° C
250
Reflow Zone
150
Soaking Zone
120 sec max
100
-VOUT
<1.5° C/sec
Contact and PCB resistance
losses due to IR drops
time above 217° C
45-75 sec
High trace = normal upper limit
Low trace = normal lower limit
Preheating Zone
50
240 sec max
0
Figure 5. Remote Sense Circuit Configuration
0
30
60
90
120
150
Time (sec)
180
210
240
270
300
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MDC_UDQ-Series.B05 Page 23 of 24
UDQ Series
420W Fully Regulated, Digitally Controlled,
Advanced Bus Converter (ABC)
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 6. 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.
© 2014 Murata Power Solutions, Inc.
www.murata-ps.com/support
MDC_UDQ-Series.B05 Page 24 of 24