E36SC05025 Datasheet

E36SC05025
125W DC/DC Power Modules
FEATURES
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High efficiency: 91% @ 5V/25A
Size:
58.4x22.8x11.0mm
(2.30”x0.90”x0.43”) w/o heat-spreader
58.4x22.8x12.7mm
(2.30”x0.90”x0.50”) with heat-spreader
Industry standard footprint and pinout
Fixed frequency operation
SMD and through-hole versions
Input UVLO
OTP and output OVP
Output OCP hiccup mode
Output voltage trim down : -20%
Output voltage trim up: +10% at Vin>20V
Monotonic startup into normal and
pre-biased loads
1500V isolation and basic insulation
No minimum load required
No negative current during power or enable on/off
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950-1 (US & Canada) recognized
Delphi Series E36SC050, Eighth Brick
Family
DC/DC Power Modules:
18~75V in, 5.0V/25A out, 125W
OPTIONS

Negative or Positive remote On/Off
The Delphi Series E36SC050, Eighth Brick, 18V~75Vin

Surface-mount/Through-hole
input, single output, isolated DC/DC converters, are the latest

Open frame/Heat spreader
offering from a world leader in power systems technology and
manufacturing ― Delta Electronics, Inc. This product family
provides up to 125 watts of power or 25A of output current.
With creative design technology and optimization of
component
placement,
these
converters
possess
outstanding electrical and thermal performance, as well as
extremely high reliability under highly stressful operating
conditions. Typical efficiency of the 5V/25A module is greater
APPLICATIONS

Optical Transport

Data Networking

Communications

Servers
than 91%.
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TECHNICAL SPECIFICATIONS
PARAMETER
NOTES and CONDITIONS
E36SC05025 (Standard)
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient (100ms)
Operating Ambient Temperature
Storage Temperature
Input/Output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current ( I2t)
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Regulation
Over Load
Over Line
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Current Range
Output Over Current Protection(hiccup mode)
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time (within 1% Vout nominal)
Turn-On Transient
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Output Capacitance (note1)
EFFICIENCY
100% Load
100% Load
60% Load
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Logic High (Module Off)
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
Logic High (Module On)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Output Voltage Trim Range(note 2)
Output Voltage Remote Sense Range
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Weight
Typ.
0
100ms
-40
-55
Max.
Units
80
100
85
125
1500
Vdc
Vdc
Vdc
°C
°C
Vdc
18
48
75
Vdc
16.5
15.5
0.3
17.2
16.2
1.0
17.9
16.9
1.8
8.9
Vdc
Vdc
Vdc
A
mA
mA
A2s
mA
dB
Full Load, 18Vin
Vin=48V, Io=0A
Vin=48V, Io=0A
55
5
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
20
50
1
Vin=48V, Io=Io.max, Tc=25°C
Io=Io, min to Io, max
Vin=18V to 75V
Tc=-40°C to 85°C
Over sample load, line and temperature
5Hz to 20MHz bandwidth
Vin=48V, Full Load, 1µF ceramic, 10µF tantalum
Vin=48V, Full Load, 1µF ceramic, 10µF tantalum
Vin=18V to75V
Output Voltage 10% Low
4.925
4.85
5
5
5.075
Vdc
±5
±5
±50
5.15
mV
mV
mV
V
25
35
mV
mV
A
A
70
23
0
27.5
48Vin, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
75% Io.max to 50% Io.max
50% Io.max to 75% Io.max
200
200
200
mV
mV
µs
55
55
mS
mS
µF
Full load; 5% overshoot of Vout at startup
10000
Vin=24V
Vin=48V
Vin=48V
90.5
91
91.5
%
%
%
1500
1000
Vdc
MΩ
pF
300
KHz
10
Von/off
Von/off
Von/off
Von/off
Ion/off at Von/off=0.0V
Logic High, Von/off=5V
Pout ≦ max rated power,Io ≦ Io.max
Pout ≦ max rated power,Io ≦ Io.max
Over full temp range; % of nominal Vout
Io=80% of Io, max; Ta=25°C, airflow rate=300LFM
Without heat spreader
With heat spreader
Refer to Figure 18 for Hot spot 1 location
Over-Temperature Shutdown ( Without heat spreader)
(48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-)
Refer to Figure 21 for Hot spot 2 location
Over-Temperature Shutdown (With heat spreader)
(48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-)
Over-Temperature Shutdown ( NTC resistor )
Refer to Figure 18 for NTC resistor location
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
3.0
0.8
5
V
V
3.0
0.8
5
V
V
mA
10
10
140
%
%
%
-20
115
7.3
24.6
33.2
Mhours
hours
grams
grams
132
°C
120
°C
130
°C
(TA=25°C, airflow rate=100 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
Note1: For applications with higher output capacitive load, please contact Delta.
Note2: Trim down range -20% for 18Vin ~75Vin, Trim up range +10% for 20Vin ~ 75Vin.
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ELECTRICAL CHARACTERISTICS CURVES
94
15
14
92
13
POWER DISSIPATION(W)
90
EFFICIENCY(%)
88
48Vin
86
36Vin
84
75Vin
18Vin
82
80
78
75Vin
12
11
48Vin
10
9
36Vin
8
7
18Vin
6
5
4
76
3
74
2
2.5
5
7.5
10
12.5
15
17.5
20
22.5
25
2.5
OUTPUT CURRENT(A)
5
7.5
10
12.5
15
17.5
20
22.5
25
OUTPUT CURRENT(A)
Figure 1: Efficiency vs. load current for 18V, 36V, 48V, and 75V
input voltage at 25°C.
Figure 2: Power dissipation vs. load current for 18V, 36V, 48V,
and 75V input voltage at 25°C.
9
8
INPUT CURRENT (A)
7
6
5
4
3
2
1
0
10
15
20
25
30
35 40 45 50
INPUT VOLTAGE (V)
55
60
65
70
75
Figure 3: Full load input characteristics at room temperature.
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ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4: Turn-on transient at zero load current (10ms/div).
Vin=48V. Top Trace: Vout; 2V/div; Bottom Trace: ON/OFF input:
5V/div.
Figure 5: Turn-on transient at full load current (10ms/div).
Vin=48V. Top Trace: Vout: 2V/div; Bottom Trace: ON/OFF input:
5V/div.
For Input Voltage Start up
Figure 6: Turn-on transient at zero load current (10 ms/div).
Top Trace: Vout; 2V/div; Bottom Trace: input voltage: 20V/div.
DS_E36SC05025_08162013
Figure 7: Turn-on transient at full load current (10 ms/div).
Top Trace: Vout; 2V/div; Bottom Trace: input voltage: 20V/div.
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ELECTRICAL CHARACTERISTICS CURVES
Figure 8: Output voltage response to step-change in load current
(50%-75%-50% of Io, max; di/dt = 0.1A/µs; Vin is 24V). Load cap:
10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (0.2V/div, 100us/div), Bottom Trace:Iout (10A/div). Scope
measurement should be made using a BNC cable (length shorter than
20 inches). Position the load between 51 mm to 76 mm (2 inches to 3
inches) from the module
Figure 9: Output voltage response to step-change in load current
(50%-75%-50% of Io, max; di/dt = 0.1A/µs; Vin is 48V). Load cap:
10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (0.2V/div, 100us/div), Bottom Trace: Iout (10A/div). Scope
measurement should be made using a BNC cable (length shorter
than 20 inches). Position the load between 51 mm to 76 mm (2
inches to 3 inches) from the module
Figure 10: Test set-up diagram showing measurement points
for Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (LTEST) of 12 μH. Capacitor Cs offset
possible battery impedance. Measure current as shown above.
Figure 11: Input Terminal Ripple Current, ic, at max output
current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (500 mA/div,2us/div).
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ELECTRICAL CHARACTERISTICS CURVES
Figure 12: Input reflected ripple current, is, through a 12µH
source inductor at nominal input voltage and max load current
(20 mA/div,2us/div).
Figure 13: Output voltage noise and ripple measurement test
setup.
6
Output Voltage (V)
5
4
3
2
1
0
0
Figure 14: Output voltage ripple at nominal input voltage and
max load current (50 mV/div, 2us/div)
Load capacitance: 1µF ceramic capacitor and 10µF tantalum
capacitor. Bandwidth: 20 MHz.
DS_E36SC05025_08162013
5
10
15
20
Output Current (A)
25
30
35
Figure 15: Output voltage vs. load current showing typical
current limit curves and converter shutdown points.
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Safety Considerations
DESIGN CONSIDERATIONS
Input Source Impedance
The impedance of the input source connecting to the
DC/DC power modules will interact with the modules
and affect the stability. A low ac-impedance input source
is recommended. If the source inductance is more than
a few μH, we advise 100μF electrolytic capacitor (ESR <
0.7 Ω at 100 kHz) mounted close to the input of the
module to improve the stability.
Layout and EMC Considerations
Delta’s DC/DC power modules are designed to operate
in a wide variety of systems and applications. For design
assistance with EMC compliance and related PWB
layout issues, please contact Delta’s technical support
team. An external input filter module is available for
easier EMC compliance design. Below is the reference
design for an input filter tested with E36SC05025 to meet
class B in CISSPR 22.
Schematic and Components List
Cin is 100uF low ESR Aluminum cap:
CY is 1nF ceramic cap:
CX1,CX2 are 2.2uF ceramic cap:
CY1,CY2 are 3.3nF ceramic cap:
L1,L2 are common-mode inductor ,L1=L2=0.63mH:
The power module must be installed in compliance with
the spacing and separation requirements of the
end-user’s safety agency standard, i.e., UL60950-1,
CSA C22.2 NO. 60950-1 2nd and IEC 60950-1 2nd :
2005 and EN 60950-1 2nd: 2006+A11+A1: 2010, if the
system in which the power module is to be used must
meet safety agency requirements.
Basic insulation based on 75 Vdc input is provided
between the input and output of the module for the
purpose of applying insulation requirements when the
input to this DC-to-DC converter is identified as TNV-2 or
SELV. An additional evaluation is needed if the source is
other than TNV-2 or SELV.
When the input source is SELV circuit, the power module
meets SELV (safety extra-low voltage) requirements. If
the input source is a hazardous voltage which is greater
than 60 Vdc and less than or equal to 75 Vdc, for the
module’s output to meet SELV requirements, all of the
following must be met:

The input source must be insulated from the ac
mains by reinforced or double insulation.

The input terminals of the module are not operator
accessible.

A SELV reliability test is conducted on the system
where the module is used, in combination with the
module, to ensure that under a single fault,
hazardous voltage does not appear at the module’s
output.
When installed into a Class II equipment (without
grounding), spacing consideration should be given to
the end-use installation, as the spacing between the
module and mounting surface have not been evaluated.
Test Result:Vin=48V,Io=25A,
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
dBμV
80.0
Limits
55022MQP
55022MAV
70.0
60.0
50.0
40.0
Transducer
LISNPUL
Traces
PK+
AV
30.0
20.0
This power module is not internally fused. To achieve
optimum safety and system protection, an input line fuse
is highly recommended. The safety agencies require a
normal-blow fuse with 20A maximum rating to be
installed in the ungrounded lead. A lower rated fuse can
be used based on the maximum inrush transient energy
and maximum input current.
Soldering and Cleaning Considerations
10.0
0.0
150 kHz
1 MHz
10 MHz
30 MHz
Post solder cleaning is usually the final board assembly
process before the board or system undergoes electrical
testing. Inadequate cleaning and/or drying may lower the
reliability of a power module and severely affect the
Blue Line is quasi peak mode;green line is average mode.
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reliability of a power module and severely affect the
finished circuit board assembly test. Adequate cleaning
and/or
drying
is
especially
important
for
un-encapsulated and/or open frame type power
modules. For assistance on appropriate soldering and
cleaning procedures, please contact Delta’s technical
support team.
Vi(+)
Vo(+)
Sense(+)
ON/OFF
trim
Rload
Sense(-)
Vi(-)
Vo(-)
FEATURES DESCRIPTIONS
Over-Current Protection
Figure 16: Remote on/off implementation
The modules include an internal output over-current
protection circuit, which will endure current limiting for
an unlimited duration during output overload. If the
output current exceeds the OCP set point, the modules
will shut down (hiccup mode).
The modules will try to restart after shutdown. If the
overload condition still exists, the module will shut down
again. This restart trial will continue until the overload
condition is corrected.
Over-Voltage Protection
The modules include an internal output over-voltage
protection circuit, which monitors the voltage on the
output terminals. If this voltage exceeds the over-voltage
set point, the protection circuit will constrain the max
duty cycle to limit the output voltage, if the output
voltage continuously increases the modules will shut
down, and then restart after a hiccup-time (hiccup
mode).
Over-Temperature Protection
The over-temperature protection consists of circuitry
that provides protection from thermal damage. If the
temperature exceeds the over-temperature threshold
the module will shut down.The module will restart after
the temperature is within specification.
Output Voltage Adjustment (TRIM)
To increase or decrease the output voltage set point,
connect an external resistor between the TRIM pin and
either the SENSE(+) or SENSE(-). The TRIM pin
should be left open if this feature is not used.
For trim down, the external resistor value required to
obtain a percentage of output voltage change △% is
defined as:
 511

Rtrim  down  
 10.22 K 



Ex. When Trim-down -20% (5.0V×0.8=4.0V)
 511

Rtrim  down  
 10.22 K   15.33K 
 20

For trim up, the external resistor value required to
obtain a percentage output voltage change △% is
defined as:
Rtrim  up 
Ex. When Trim-up +10% (5.0V×1.1=5.5V)
Rtrim  up 
Remote On/Off
The remote on/off feature on the module can be either
negative or positive logic. Negative logic turns the
module on during a logic low and off during a logic high.
Positive logic turns the modules on during a logic high
and off during a logic low.
Remote on/off can be controlled by an external switch
between the on/off terminal and the Vi (-) terminal. The
switch can be an open collector or open drain. For
negative logic if the remote on/off feature is not used,
please short the on/off pin to Vi (-). For positive logic if
the remote on/off feature is not used, please leave the
on/off pin to floating.
DS_E36SC05025_08162013
5.11Vo (100   ) 511

 10.22K 
1.225

5.11  5.0  (100  10) 511

 10.22  168K 
1.225  10
10
The output voltage can be increased by both the remote
sense and the trim, however the maximum increase is
the larger of either the remote sense or the trim, not the
sum of both.
When using remote sense and trim, the output voltage
of the module is usually increased, which increases the
power output of the module with the same output
current.
Care should be taken to ensure that the maximum
output power of the module remains at or below the
maximum rated power.
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THERMAL CONSIDERATIONS
Thermal management is an important part of the system
design. To ensure proper, reliable operation, sufficient
cooling of the power module is needed over the entire
temperature range of the module. Convection cooling is
usually the dominant mode of heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments encountered in most electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in which
the power modules are mounted.
The following figure shows the wind tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the neighboring PWB
and the top of the power module is constantly kept at
6.35mm (0.25’’).
PWB
FANCING PWB
MODULE
50.8(2.00")
AIR VELOCITY
AND AMBIENT
TEMPERATURE
SURED BELOW
THE MODULE
AIR FLOW
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 17: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power
module should always be operated below the maximum
operating temperature. If the temperature exceeds the
maximum module temperature, reliability of the unit may
be affected.
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THERMAL CURVES
THERMAL CURVES
(WITHOUT HEAT SPREADER)
(WITH HEAT SPREADER)
NTC RESISTOR
AIRFLOW
AIRFLOW
HOT SPOT 1
HOT SPOT 2
Figure 18: * Hot spot 1& NTC resistor temperature measured
points. The allowed maximum hot spot temperature is defined at
116℃.
Output Current (A)
Figure 21: * Hot spot 2 temperature measured point. The allowed
maximum hot spot temperature is defined at 105℃.
Output Current (A)
E36SC05025(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 24V (Transverse Orientation)
E36SC05025(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 24V (Transverse Orientation,With Heat Spreader)
24
24
21
Natural
Convection
Natural
Convection
21
18
18
100LFM
100LFM
15
200LFM
15
200LFM
12
300LFM
12
300LFM
400LFM
9
9
400LFM
6
500LFM
6
500LFM
3
600LFM
3
600LFM
0
25
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 19: Output current vs. ambient temperature and air
velocity @Vin=24V(Either Orientation, airflow from Vin+ to
Vin-,without heat spreader)
Output Current (A)
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 22: Output current vs. ambient temperature and air velocity
@Vin=24V(Either Orientation, airflow from Vin+ to Vin-,with heat
spreader)
Output Current (A)
E36SC05025(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation)
E36SC05025(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation,With Heat Spreader)
24
24
Natural
Convection
21
Natural
Convection
21
18
100LFM
18
100LFM
200LFM
15
15
200LFM
300LFM
12
300LFM
12
400LFM
9
400LFM
9
500LFM
6
500LFM
600LFM
6
600LFM
3
3
0
25
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 20: Output current vs. ambient temperature and air
velocity @Vin=48V(Either Orientation, airflow from Vin+ to
Vin-,without heat spreader)
DS_E36SC05025_08162013
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 23: Output current vs. ambient temperature and air velocity
@Vin=48V(Either Orientation, airflow from Vin+ to Vin-,with heat
spreader)
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PICK AND PLACE LOCATION
RECOMMENDED PAD LAYOUT (SMD)
TAPE & REEL PACKAGE FOR SURFACE MOUNT MODELS
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LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE(for SMD models)
Note: The temperature refers to the pin of E36SC, measured on the +Vout pin joint.
LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE(for SMD models)
Temp.
Peak Temp. 240 ~ 245 ℃
217℃
Ramp down
max. 4℃/sec.
200℃
150℃
Preheat time
100~140 sec.
Time Limited 90 sec.
above 217℃
Ramp up
max. 3℃/sec.
25℃
Time
Note: The temperature refers to the pin of E36SC05025, measured on the +Vout pin joint.
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MECHANICAL DRAWING (WITH HEAT SPREADER)
For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly
onto system boards; please do not subject such modules through reflow temperature profile.
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MECHANICAL DRAWING (WITHOUT HEAT SPREADER)
Surface-mount module
Pin No.
1
2
3
4
5
6
7
8
Name
+Vin
ON/OFF
-Vin
-Vout
-SENSE
TRIM
+SENSE
+Vout
Through-hole module
Function
Positive input voltage
Remote ON/OFF
Negative input voltage
Negative output voltage
Negative remote sense
Output voltage trim
Positive remote sense
Positive output voltage
Pin Specification:
Pins 1-3,5-7
Pins 4 & 8
1.00mm (0.040”) diameter
2. 1.50mm (0.059”) diameter
Note: All pins are copper alloy with matte Tin(Pb free) plated over Nickel under plating.
DS_E36SC05025_08162013
E-mail: DCDC@delta.com.tw
http://www.deltaww.com/dcdc
P14
PART NUMBERING SYSTEM
E
36
Form
Input
Factor
Voltage
E - 1/8
Brick
S
Number of Product
Outputs
S–
3618V~75V
C
Single
Series
C-
050
25
N
K
Output
Output
ON/OFF
Pin
Voltage
Current
Logic
Length
050-
Series
N–
25-
5.0V
25A
Negative
Number
F
A
Option Code
K – 0.110’’
F - RoHS 6/6
N - 0.145”
(Lead Free)
R - 0.170”
M - SMD pin
A – Standard Function
H– With Heatspreader
Space - RoHS5/6
MODEL LIST
MODEL NAME
E36SC05025NKFA
INPUT
18V~75V
OUTPUT
8.9A
5.0V
EFF @ 100% LOAD
25A
91.0% @ 48Vin
Default remote on/off logic is negative and pin length is 0.170”
For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales
office.
For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly onto
system boards; please do not subject such modules through reflow temperature profile.
CONTACT: www.deltaww.com/dcdc
USA:
Telephone:
East Coast: 978-656-3993
West Coast: 510-668-5100
Fax: (978) 656 3964
Email: DCDC@delta-corp.com
Europe:
Phone: +31-20-655-0967
Fax: +31-20-655-0999
Email: DCDC@delta-es.com
Asia & the rest of world:
Telephone: +886 3 4526107
ext 6220~6224
Fax: +886 3 4513485
Email: DCDC@delta.com.tw
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available
upon request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by
Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to
revise these specifications
DS_E36SC05025_08162013
E-mail: DCDC@delta.com.tw
http://www.deltaww.com/dcdc
P15