GE Data Sheet
October 1, 2015 ©2012 General Electric Company. All rights reserved.
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
Features
Compliant to RoHS EU Directive 2011/65/EU (Z
versions)
Compliant to RoHS EU Directive 2011/65/EU under
exemption 7b (Lead solder exemption). Exemption 7b
will expire after June 1, 2016 at which time this produc
twill no longer be RoHS compliant (non-Z versions)
Compatible in a Pb-free or SnPb reflow environment
High efficiency – 92% at 3.3V full load
Industry standard, DOSA compliant, Eighth brick
footprint
57.9mm x 22.9mm x 8.5mm
(2.28in x 0.9in x 0.335in)
Wide Input voltage range: 36-75 Vdc
Tightly regulated output
Constant switching frequency
Positive Remote On/Off logic
Input under/over voltage protection
Output overcurrent/voltage protection
Over-temperature protection
Remote sense
No minimum load required
No reverse current during output shutdown
Output Voltage adjust: 80% to 110% of Vo,nom
Operating temperature range (-40°C to 85°C)
UL* 60950-1Recognized, CSA† C22.2 No. 60950-1-03
Certified, and VDE‡ 0805:2001-12 (EN60950-1) Licensed
CE mark meets 73/23/EEC and 96/68/EEC directives§
Meets the voltage and current requirements for ETSI
300-132-2 and complies with and licensed for Basic
insulation rating per EN60950-1
ISO**9001 and ISO 14001 certified manufacturing
facilities
Applications
Distributed power architectures
Wireless networks
Access and optical network Equipment
Enterprise Networks
Latest generation IC’s (DSP, FPGA, ASIC) and
Microprocessor powered applications
Options
Negative Remote On/Off logic
Over current/Over temperature/Over voltage
protections (Auto-restart)
Heat plate versions (-C, -H)
Surface Mount version (-S)
Description
The EQW010/040 series DC-DC converters are designed to provide up to 40A output current in an industry standard eighth
brick package. These DC-DC converters operate over an input voltage range of 36 to 75 Vdc and provide a single, precisely-
regulated output. The output is isolated from the input, allowing versatile polarity configurations and grounding
connections. Built in filtering for both the input and output minimizes the need for external filtering.
RoHS Compliant
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 2
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute
stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those
given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can
adversely affect the device reliability.
Parameter Device Symbol Min Max Unit
Input Voltage
Continuous All VIN -0.3 80 Vdc
Transient (100 ms) All VIN,trans -0.3 100 Vdc
Operating Ambient Temperature All TA -40 85 °C
(see Thermal Considerations section)
Storage Temperature All Tstg -55 125 °C
I/O Isolation voltage (100% factory Hi-Pot tested) All 1500 Vdc
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter Device Symbol Min Typ Max Unit
Operating Input Voltage All VIN 36 48 75 Vdc
Maximum Input Current All, except B IIN,max 3.2 3.5 Adc
(VIN= VIN, min to VIN, max, IO=IO, max) B IIN,max 3.4 3.7 Adc
Input No Load Current All IIN,No load 75 mA
(VIN = VIN, nom, IO = 0, module enabled)
Input Stand-by Current All IIN,stand-by 22 mA
(VIN = VIN, nom, module disabled)
Inrush Transient All I2t 0.5 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN, min to VIN,
max, IO= IOmax ; See Test configuration section)
All 20 mAp-p
Input Ripple Rejection (120Hz) All 50 dB
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to an
integrated part of sophisticated power architectures. To preserve maximum flexibility, internal fusing is not included,
however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a
time-delay fuse with a maximum rating of 8 A (see Safety Considerations section). Based on the information provided in
this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used.
Refer to the fuse manufacturer’s data sheet for further information.
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 3
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Nominal Output Voltage Set-point B VO, set 11.76 12.0 12.24 Vdc
VIN=VIN, min, IO=IO, max, TA=25°C) A VO, set 4.90 5.0 5.10 Vdc
F VO, set 3.23 3.3 3.37 Vdc
G VO, set 2.45 2.5 2.55 Vdc
Y VO, set 1.76 1.8 1.84 Vdc
M VO, set 1.47 1.5 1.53 Vdc
P VO, set 1.18 1.2 1.22 Vdc
S1R0 VO, set 0.98 1.0 1.02 Vdc
Output Voltage
All VO -3.0 +3.0 % VO, set
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Output Regulation
Line (VIN=VIN, min to VIN, max) B, A, F, G 0.2 % VO, set
Y, M, P, S1R0 5 mV
Load (IO=IO, min to IO, max) B, A, F, G
0.2 % VO, set
Y, M, P, S1R0 5 mV
Temperature (Tref=TA, min to TA, max) All
1.0 % VO, set
Output Ripple and Noise on nominal output
(VIN=VIN, nom ,IO= IO, max , TA=TA, min to TA, max)
RMS (5Hz to 20MHz bandwidth) B 30 mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth) B 100 mVpk-pk
RMS (5Hz to 20MHz bandwidth) All, except B 25 mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth) All, except B 75 mVpk-pk
External Capacitance B CO, max 0 1,500 μF
A CO, max 0 10,000 μF
F, G, Y, M, P,
S1R0 CO, max 0* 20,000 μF
Output Current B Io 0 10 Adc
A Io 0
20 Adc
F Io 0
30 Adc
G Io 0
35 Adc
Y, M, P, S1R0 Io 0
40 Adc
Output Current Limit Inception (Hiccup Mode ) All, except G IO, lim 105 115 130 % Io
(VO= 90% of VO, set) G
IO, lim 103 115 130 % Io
Output Short-Circuit Current All IO, s/c 130 150 Arms
(VO≤250mV) ( Hiccup Mode )
Efficiency B η 93.0 %
VIN= VIN, nom, TA=25°C A η 91.7 %
IO=IO, max , VO= VO,set F η 92.0 %
G η 89.8 %
Y η 88.3 %
M η 87.1 %
P η 85.0 %
S1R0 η 83.2 %
Switching Frequency All fsw 420 kHz
* Note: For 1.0VO (S1R0) and 1.2 VO (P) device codes, external capacitance, CO, should be 1000uF minimum to achieve monotonic start-up with very light load
(≤ 2Amp).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 4
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Dynamic Load Response
(dIo/dt=0.1A/s; VIN = VIN, nom; TA=25°C)
Load Change from Io= 50% to 75% or 25% to
50% of Io,max;
Peak Deviation All Vpk 3 % VO, set
Settling Time (Vo<10% peak deviation) All ts 200 s
(dIo/dt=1A/s; VIN = VIN, nom; TA=25°C)
Load Change from Io= 50% to 75% or 25% to
50% of Io,max;
Peak Deviation All Vpk 5 % VO, set
Settling Time (Vo<10% peak deviation) All ts 200 s
Isolation Specifications
Parameter Device Symbol Min Typ Max Unit
Isolation Capacitance All Ciso 1000 pF
Isolation Resistance All Riso 10 MΩ
I/O Isolation Voltage (100% factory Hi-pot tested) All All 1500 Vdc
General Specifications
Parameter Device Symbol Min Typ Max Unit
Calculated Reliability based upon Telcordia SR-332
Issue 2: Method I Case 3 (IO=80%IO, max, TA=40°C,
airflow = 200 lfm, 90% confidence)
B FIT 334 109/Hours
A-S FIT 290 109/Hours
F FIT 328 109/Hours
Y FIT 302 109/Hours
B MTBF 2,997,896 Hours
A-S MTBF 3,451,558 Hours
F MTBF 3,051,626 Hours
Y MTBF 3,312,888 Hours
Weight All
20.5 (0.72) g
(oz.)
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 5
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
See Feature Descriptions for additional information.
Parameter Device Symbol Min Typ Max Unit
Remote On/Off Signal Interface
(VIN=VIN, min to VIN, max ; open collector or equivalent,
Signal referenced to VIN- terminal)
Negative Logic: device code suffix “1”
Logic Low = module On, Logic High = module Off
Positive Logic: No device code suffix required
Logic Low = module Off, Logic High = module On
Logic Low - Remote On/Off Current All Ion/off 1.0 mA
Logic Low - On/Off Voltage All Von/off -0.7 1.2 Vdc
Logic High Voltage – (Typ = Open Collector) All Von/off 5 Vdc
Logic High maximum allowable leakage current All Ion/off 10 μA
Turn-On Delay and Rise Times
(IO=IO, max , VIN=VIN, nom, TA = 25 oC)
Case 1: On/Off input is set to Logic Low (Module
ON) and then input power is applied (Tdelay from
instant at which VIN = VIN, min until Vo=10% of VO,set)
All
B*
Tdelay
Tdelay
—
—
20
25
25
30
msec
msec
Case 2: Input power is applied for at least 1 second
and then the On/Off input is set from OFF to ON (Tdelay =
from instant at which VIN=VIN, min until VO = 10% of VO, set).
All
B*
Tdelay
Tdelay
—
—
5
25
10
30
msec
msec
Output voltage Rise time (time for Vo to rise from 10%
of Vo,set to 90% of Vo, set) All Trise — 8 12
msec
Output voltage Rise time (time for Vo to rise from 10%
of Vo,set to 90% of Vo, set with max ext capacitance) All Trise — 8 12
msec
Output voltage overshoot – Startup All
— 3 % VO, set
IO= IO, max; VIN=VIN, min to VIN, max, TA = 25 oC
Remote Sense Range G, Y, M, P,
S1R0 VSENSE 0.25 Vdc
(Max voltage drop is 0.5V) B*, A, F VSENSE 10 % VO, set
Output Voltage Adjustment Range All* 80 110 % VO, set
Output Overvoltage Protection B VO, limit 14 16 Vdc
A VO, limit 5.7 6.5 Vdc
F VO, limit 3.8 4.6 Vdc
G VO, limit 2.9 3.4 Vdc
Y VO, limit 2.3 2.6 Vdc
M VO, limit 1.8 2.2 Vdc
P VO, limit 1.4 1.6 Vdc
S1R0 VO, limit 1.2 1.4 Vdc
Input Undervoltage Lockout All VUVLO
Turn-on Threshold 30 34.5 36 Vdc
Turn-off Threshold 30 32 Vdc
Hysterisis 1.5 2
Vdc
Input Overvoltage Lockout All VOVLO
Turn-on Threshold 80 Vdc
Turn-off Threshold 75 79 83 Vdc
Hysterisis 2 3.5
Vdc
* Note: 12.0VO (B) device codes have an adaptable extended Turn-On Delay interval, Tdelay, as specified for B* devices. The extended Tdelay will occur when a
12VO module restarts following either 1) the rapid cycling of Vin from normal levels to less than the Input Undervoltage Lockout and then back to normal; or 2)
toggling the on/off signal from on to off and back to on without removing the input voltage. The normal Turn-On Delay interval, Tdelay, as specified for All
Devices, will occur whenever a 12VO module restarts with input voltage removed from the module for the preceding 1 second.
12.0VO (B) also achieves +10% VO, set Remote Sense drop or trim up to 110% VO, set only above Vin = 40Vdc.
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 6
Characteristic Curves
The following figures provide typical characteristics for the EQW010A0B (12V, 10A) at 25oC. The figures are identical for
either positive or negative remote On/Off logic.
EFFICIENCY, (%)
70
75
80
85
90
95
0
2
4
6
8
10
Vin = 36V
Vin = 48V
Vin = 75V
OUTPUT CURRENT, Io (A)
0
2
4
6
8
10
12
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 1. Converter Efficiency versus Output Current. Figure 4. Derating Output Current versus Local Ambient
Temperature and Airflow (direction shown in Figure 63).
OUTPUT VOLTAGE
VO (V) (50mV/div)
On/Off VOLTAGE OUTPUT VOLTAGE
V On/off (V) (5V/div) VO (V) (5V/div)
TIME, t (1s/div) TIME, t (5ms/div)
Figure 2. Typical output ripple and noise (VIN
= VIN,NOM, Io
=
Io,max).
Figure 5. Typical Start-up Using Remote On/Off,
negative logic version, (VIN = VIN,NOM, Io = Io,max) [where input
voltage has not been applied in the previous 1 second, see page 5].
OUTPUT CURRENT OUTPUT VOLTAGE
Io (A) (5A/div) VO (V) (200mV/div)
INPUT VOLTAGE OUTPUT VOLTAGE
VIN (V) (50V/div) VO (V) (5V/div)
TIME, t (0.1 ms /div) TIME, t (5ms/div)
Figure 3. Transient Response to Dynamic Load Change
from 75% to 50% to 75% of full load.
Figure 6. Typical Start-up Using Input Voltage, (VIN
=
VIN,NOM, Io = Io,max) [where input voltage has not been applied in the
p
revious 1 second , see
p
a
g
e 5].
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 7
Characteristic Curves
The following figures provide typical characteristics for the EQW020A0A (5.0V, 20A) at 25oC. The figures are identical for
either positive or negative remote On/Off logic.
EFFICIENCY, (%)
70
75
80
85
90
95
0 5 10 15 20
Vin = 75V
Vin = 48V
Vin = 36V
OUTPUT CURRENT, Io (A)
0
5
10
15
20
25
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 7. Converter Efficiency versus Output Current. Figure 10. Derating Output Current versus Local Ambient
Temperature and Airflow (direction shown in Figure 63).
OUTPUT VOLTAGE
VO (V) (20mV/div)
On/Off VOLTAGE OUTPUT VOLTAGE
VOn/Off (V) (5V/div) VO (V) (2V/div)
TIME, t (1s/div) TIME, t (5ms/div)
Figure 8. Typical output ripple and noise (VIN
= VIN,NOM, Io
=
Io,max).
Figure 11. Typical Start-up Using Remote On/Off, negative
logic version shown (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE
Io(A) (10A/div) VO (V) (100mV/div)
INPUT VOLTAGE OUTPUT VOLTAGE
VIN (V) (20V/div) VO (V) (2V/div)
TIME, t (0.1ms/div) TIME, t (4ms/div)
Figure 9. Transient Response to Dynamic Load Change
from 50% to 75% to 50% of full load.
Figure 12. Typical Start-up Using Input Voltage (VIN
=
VIN,NOM, Io = Io,max).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 8
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW030A0F (3.3V, 30A) at 25oC. The figures are identical for
either positive or negative remote On/Off logic.
EFFICIENCY, (%)
70
75
80
85
90
95
0 5 10 15 20 25 30
Vin = 36V
Vin = 48V
Vin = 75V
OUTPUT CURRENT, Io (A)
0
5
10
15
20
25
30
35
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 13. Converter Efficiency versus Output Current. Figure 16. Derating Output Current versus Local Ambient
Temperature and Airflow (direction shown in Figure 63).
OUTPUT VOLTAGE
VO (V) (20mV/div)
On/Off VOLTAGE OUTPUT VOLTAGE
VO (V) (5V/div) VOn/off (V) (1V/div)
TIME, t (1s/div) TIME, t (5ms/div)
Figure 14. Typical output ripple and noise (VIN
= VIN,NOM, Io
=
Io,max).
Figure 17. Typical Start-up Using Remote On/Off, negative
logic version shown (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE
Io(A) (10A/div) VO (V) (100mV/div)
INTPUT VOLTAGE OUTPUT VOLTAGE
VO (V) (20V/div) VIN (V) (2V/div)
TIME, t (0.1ms/div) TIME, t (4ms/div)
Figure 15. Transient Response to Dynamic Load Change
from 50% to 75% to 50% of full load.
Figure 18. Typical Start-up Using Input Voltage (VIN
=
VIN,NOM, Io = Io,max).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 9
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW035A0G (2.5V, 35A) at 25oC. The figures are identical for
either positive or negative remote On/Off logic.
EFFICIENCY, (%)
70
75
80
85
90
95
0 5 10 15 20 25 30 35
Vin = 36V
Vin = 48V
Vin = 75V
OUTPUT CURRENT, Io (A)
5
10
15
20
25
30
35
40
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 19. Converter Efficiency versus Output Current. Figure 22. Derating Output Current versus Local
Ambient Temperature and Airflow (direction shown in
Figure 63).
OUTPUT VOLTAGE
VO (V) (20mV/div)
On/Off VOLTAGE OUTPUT VOLTAGE
VOn/Off (V) (5V/div) VO (V) (1V/div)
TIME, t (1s/div) TIME, t (5ms/div)
Figure 20. Typical output ripple and noise (VIN
= VIN,NOM, Io
=
Io,max).
Figure 23. Typical Start-up Using Remote On/Off,
negative logic version shown (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE
Io (A) (10A/div) VO (V) (100mV/div)
INPUT VOLTAGE OUTUT VOLTAGE
VIN (V) (20V/div) VO (V) (1.0V/div)
TIME, t (0.1ms/div) TIME, t (4ms/div)
Figure 21. Transient Response to Dynamic Load Change
from 50% to 75% to 50% of full load.
Figure 24. Typical Start-up Using Input Voltage (VIN
=
VIN,NOM, Io = Io,max).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 10
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW040A0Y (1.8V, 40A) at 25oC. The figures are identical for
either positive or negative remote On/Off logic.
EFFICIENCY, (%)
70
75
80
85
90
95
0 5 10 15 20 25 30 35 40
Vin = 48V
Vin = 75V
Vin = 36V
OUTPUT CURRENT, Io (A)
10
15
20
25
30
35
40
45
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 25. Converter Efficiency versus Output Current. Figure 28. Derating Output Current versus Local
Ambient Temperature and Airflow (direction shown in
Figure 63).
OUTPUT VOLTAGE
VO (V) (20mV/div)
On/Off VOLTAGE OUTPUT VOLTAGE
V On/off (V) (5V/div) V O (V) (1.0V/div)
TIME, t (1s/div) TIME, t (10ms/div)
Figure 26. Typical output ripple and noise (VIN
= VIN,NOM, Io
=
Io,max).
Figure 29. Typical Start-up Using Remote On/Off,
negative logic version shown (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE
Io (A) (10A/div) VO (V) (50mV/div)
INPUT VOLTAGE OUTPUT VOLTAGE
VIN (V) (20V/div) VO (V) (1.0V/div)
TIME, t (0.1ms/div) TIME, t (4ms/div)
Figure 27. Transient Response to Dynamic Load Change
from 50% to 75% to 50% of full load.
Figure 30. Typical Start-up Using Input Voltage (VIN
=
VIN,NOM, Io = Io,max).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 11
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW040A0M (1.5V, 40A) at 25oC. The figures are identical for
either positive or negative remote On/Off logic.
EFFICIENCY, (%)
70
75
80
85
90
0 5 10 15 20 25 30 35 40
Vin = 36V
Vin = 75V
Vin = 48V
OUTPUT CURRENT, Io (A)
10
15
20
25
30
35
40
45
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 31. Converter Efficiency versus Output Current. Figure 34. Derating Output Current versus Local
Ambient Temperature and Airflow (direction shown in
Figure 63).
OUTPUT VOLTAGE
VO (V) (20mV/div)
On/Off VOLTAGE OUTPUT VOLTAGE
VOn/Off (V) (5.0V/div) VO (V) (0.5V/div)
TIME, t (1s/div) TIME, t (5ms/div)
Figure 32. Typical output ripple and noise (VIN
= VIN,NOM, Io
=
Io,max).
Figure 35. Typical Start-up Using Remote On/Off,
negative logic version shown (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE
Io (A) (10A/div) VO (V) (50mV/div)
INPUT VOLTAGE OUTPUT VOLTAGE
VI (V) (20.0V/div) VO (V) (0.5V/div)
TIME, t (0.1ms/div) TIME, t (4ms/div)
Figure 33. Transient Response to Dynamic Load Change
from 50% to 75% to 50% of full load.
Figure 36. Typical Start-up Using Input Voltage (VIN
=
VIN,NOM, Io = Io,max).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 12
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW040A0P (1.2V, 40A) at 25oC. The figures are identical for
either positive or negative remote On/Off logic.
EFFICIENCY, (%)
70
75
80
85
90
0 5 10 15 20 25 30 35 40
Vin = 36V
Vin = 75V
Vin = 48V
OUTPUT CURRENT, Io (A)
10
15
20
25
30
35
40
45
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 37. Converter Efficiency versus Output Current. Figure 40. Derating Output Current versus Local
Ambient Temperature and Airflow (direction shown in
Figure 63).
OUTPUT VOLTAGE
VO (V) (20mV/div)
On/Off VOLTAGE OUTPUT VOLTAGE
VO (V) (5.0V/div) VOn/off (V) (0.5V/div)
TIME, t (1s/div) TIME, t (5ms/div)
Figure 38. Typical output ripple and noise (VIN
= VIN,NOM, Io
=
Io,max).
Figure 41. Typical Start-up Using Remote On/Off,
negative logic version shown (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE
Io (A) (10A/div) VO (V) (50mV/div)
INPUT VOLTAGE OUTUT VOLTAGE
VO (V) 20.0V/div) VIN (V) (0.5V/div)
TIME, t (0.1ms/div) TIME, t (4ms/div)
Figure 39. Transient Response to Dynamic Load Change
from 50% to 75% to 50% of full load.
Figure 42. Typical Start-up Using Input Voltage (VIN
=
VIN,NOM, Io = Io,max).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 13
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW040A0S1R0 (1.0V, 40A) at 25oC. The figures are identical for
either positive or negative remote On/Off logic.
EFFICIENCY, (%)
70
75
80
85
90
0 5 10 15 20 25 30 35 40
Vin = 75V
Vin = 36V
Vin = 48V
OUTPUT CURRENT, Io (A)
15
20
25
30
35
40
45
20 30 40 50 60 70 80 90
2.0 m/s
(400
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 43. Converter Efficiency versus Output Current. Figure 46. Derating Output Current versus Local
Ambient Temperature and Airflow (direction shown in
Figure 63).
OUTPUT VOLTAGE
VO (V) (20mV/div)
On/Off VOLTAGE OUTPUT VOLTAGE
VO (V) (3.0V/div) VOn/off (V) (0.5V/div)
TIME, t (1s/div) TIME, t (5ms/div)
Figure 44. Typical output ripple and noise (VIN
= VIN,NOM, Io
=
Io,max).
Figure 47. Typical Start-up Using Remote On/Off,
negative logic version shown (VIN = VIN,NOM, Io = Io,max).
OUTPUT CURRENT OUTPUT VOLTAGE
Io (A) (20A/div) VO (V) (50mV/div)
INPUT VOLTAGE OUTPUT VOLTAGE
VO (V) (20.0V/div) VIN (V) (0.5V/div)
TIME, t (0.1ms/div) TIME, t (4ms/div)
Figure 45. Transient Response to Dynamic Load Change
from 50% to 75% to 50% of full load.
Figure 48. Typical Start-up Using Input Voltage (VIN
=
VIN,NOM, Io = Io,max).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 14
Characteristic Curves (continued)
Derating Output Current versus Local Ambient Temperature and Airflow (direction shown in Figure 63) for heat plate
versions (-C, -H).
OUTPUT CURRENT, Io (A)
2
4
6
8
10
12
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, Io (A)
15
20
25
30
35
40
45
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC
Figure 49. EQW010A0B-C/H, (12.0V, 10A). Figure 53.
EQW040A0Y-C/H,
(1.8V, 40A).
OUTPUT CURRENT, Io (A)
0
5
10
15
20
25
30
35
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, Io (A)
15
20
25
30
35
40
45
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC
Figure 51. EQW030A0F-C/H, (3.3V, 30A). Figure 55.
EQW040A0P-C/H, (1.2V, 40A).
OUTPUT CURRENT, Io (A)
10
15
20
25
30
35
40
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, Io (A)
15
20
25
30
35
40
45
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC
Figure 52. EQW035A0G-C/H, (2.5V, 35A).
Figure 56.
EQW040A0S-C/H, (1.0V, 40A).
OUTPUT CURRENT, Io (A)
5
10
15
20
25
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
OUTPUT CURRENT, Io
(
A
)
15
20
25
30
35
40
45
20 30 40 50 60 70 80 90
2.0 m/s
(400 LFM)
1.0 m/s
(200 LFM)
0.5 m/s
(100 LFM)
NC
AMBIENT TEMPERATURE, TA OC AMBIENT TEMPERATURE, TA OC
Figure 50. EQW020A0A-C/H, (5.0V, 20A).
Figure 54. EQW040A0M-C/H, (1.5V, 40A).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 15
Test Configurations
TO OSCILLOSCOPE CURRENT PROBE
LTEST
12μH
BATTERY
CS 220μF
E.S.R.<0.1
@ 20°C 100kHz
33μF
Vin+
Vin-
NOTE: Measure input reflected ripple current with a simulated
source inductance (LTEST) of 12μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
Figure 57. Input Reflected Ripple Current Test Setup.
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
V
O (+)
V O ( – ) 0.01uF
RESISTIVE
LOAD
SCOPE
COPPER STRIP
GROUND PLANE
10uF
0.1uF
Figure 58. Output Ripple and Noise Test Setup.
Vout+
Vout-
Vin+
Vin-
RLOAD
Rcontact Rdistribution
Rcontact Rdistribution
Rcontact
Rcontact
Rdistribution
Rdistribution
VIN VO
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
Figure 59. Output Voltage and Efficiency Test Setup.
=
VO. IO
VIN. IIN
x 100 %
Efficiency
Design Considerations
Input Filtering
The power module should be connected to a low
ac-impedance source. Highly inductive source
impedance can affect the stability of the power module.
For the test configuration in Figure 57 a 33μF electrolytic
capacitor (ESR<0.1 at 100kHz), mounted close to the
power module helps ensure the stability of the unit.
Consult the factory for further application guidelines.
Output Filtering
For 1.0V to 1.2V output voltage modules, an external
capacitance of 1000uF is recommended to achieve
monotonic start-up with very light load (≤ 2Amp).
Safety Considerations
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard, i.e.,
UL 60950-1-3, CSA C22.2 No. 60950-00, and VDE
0805:2001-12 (IEC60950-1).
If the input source is non-SELV (ELV or a hazardous
voltage greater than 60 Vdc and less than or equal to
75Vdc), for the module’s output to be considered as
meeting the requirements for safety extra-low voltage
(SELV), all of the following must be true:
The input source is to be provided with reinforced
insulation from any other hazardous voltages,
including the ac mains.
One VIN pin and one VOUT pin are to be grounded, or
both the input and output pins are to be kept
floating.
The input pins of the module are not operator
accessible.
Another SELV reliability test is conducted on the
whole system (combination of supply source and
subject module), as required by the safety agencies,
to verify that under a single fault, hazardous
voltages do not appear at the module’s output.
Note: Do not ground either of the input pins of the
module without grounding one of the output
pins. This may allow a non-SELV voltage to
appear between the output pins and ground.
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
All flammable materials used in the manufacturing of
these modules are rated 94V-0, or tested to the UL60950
A.2 for reduced thickness.
For input voltages exceeding –60 Vdc but less than or
equal to –75 Vdc, these converters have been evaluated
to the applicable requirements of BASIC INSULATION
between secondary DC MAINS DISTRIBUTION input
(classified as TNV-2 in Europe) and unearthed SELV
outputs.
The input to these units is to be provided with a
maximum 8 A time-delay fuse in the ungrounded lead.
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 16
Feature Description
Remote On/Off
Two remote on/off options are available. Positive logic
turns the module on during a logic high voltage on the
ON/OFF pin, and off during a logic low. Negative logic
remote On/Off, device code suffix “1”, turns the module
off during a logic high and on during a logic low.
ON/OFF
Vin+
Vin-
Ion/off
Von/off
Vout+
TRIM
Vout-
Figure 60. Remote On/Off Implementation.
To turn the power module on and off, the user must
supply a switch (open collector or equivalent) to control
the voltage (Von/off) between the ON/OFF terminal and the
VIN(-) terminal (see Figure 60). Logic low is
0V ≤ Von/off ≤ 1.2V. The maximum Ion/off during a logic low
is 1mA, the switch should be maintain a logic low level
whilst sinking this current.
During a logic high, the typical maximum Von/off
generated by the module is 15V, and the maximum
allowable leakage current at Von/off = 5V is 1μA.
If not using the remote on/off feature:
For positive logic, leave the ON/OFF pin open.
For negative logic, short the ON/OFF pin to VIN(-).
Remote Sense
Remote sense minimizes the effects of distribution losses
by regulating the voltage at the remote-sense
connections (See Figure 61). The voltage between the
remote-sense pins and the output terminals must not
exceed the output voltage sense range given in the
Feature Specifications table:
[VO(+) – VO(–)] – [SENSE(+) – SENSE(–)] 0.5 V
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum increase is the larger of either the remote
sense or the trim.
The amount of power delivered by the module is defined
as the voltage at the output terminals multiplied by the
output current. When using remote sense and trim, the
output voltage of the module can be increased, which at
the same output current would increase the power
output of the module. Care should be taken to ensure
that the maximum output power of the module remains
at or below the maximum rated power (Maximum rated
power = Vo,set x Io,max).
VO(+)
SENSE(+)
SENSE(–)
VO(–)
VI(+)
VI(-)
IOLOAD
CONTACT AND
DISTRIBUTION LOSS
E
SUPPLY II
CONTACT
RESISTANCE
Figure 61. Circuit Configuration for remote sense .
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, the module operation is disabled. The module will
only begin to operate once the input voltage is raised
above the undervoltage lockout turn-on threshold,
VUV/ON.
Once operating, the module will continue to operate until
the input voltage is taken below the undervoltage turn-
off threshold, VUV/OFF.
Overtemperature Protection
To provide protection under certain fault conditions, the
unit is equipped with a thermal shutdown circuit. The
unit will shutdown if the thermal reference point Tref
(Figure 63), exceeds 125oC (typical), but the thermal
shutdown is not intended as a guarantee that the unit
will survive temperatures beyond its rating. The module
can be restarted by cycling the dc input power for at
least one second or by toggling the remote on/off signal
for at least one second. If the auto-restart option (4) is
ordered, the module will automatically restart upon cool-
down to a safe temperature.
Output Overvoltage Protection
The output over voltage protection scheme of the
modules has an independent over voltage loop to
prevent single point of failure. This protection feature
latches in the event of over voltage across the output.
Cycling the on/off pin or input voltage resets the latching
protection feature. If the auto-restart option (4) is
ordered, the module will automatically restart upon an
internally programmed time elapsing.
Overcurrent Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current
limiting continuously. At the point of current-limit
inception, the unit enters hiccup mode. If the unit is
not configured with auto–restart, then it will latch off
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 17
Feature Descriptions (continued)
following the over current condition. The module can be
restarted by cycling the dc input power for at least one
second or by toggling the remote on/off signal for at
least one second. If the unit is configured with the auto-
restart option (4), it will remain in the hiccup mode as
long as the overcurrent condition exists; it operates
normally, once the output current is brought back into its
specified range. The average output current during
hiccup is 10% IO, max.
Output Voltage Programming
Trimming allows the output voltage set point to be
increased or decreased, this is accomplished by
connecting an external resistor between the TRIM pin
and either the VO(+) pin or the VO(-) pin.
VO(+)
VOTRIM
VO(-)
Rtrim-down
LOAD
VIN(+)
ON/OFF
VIN(-)
Rtrim-up
Figure 62. Circuit Configuration to Trim Output
Voltage.
Connecting an external resistor (Rtrim-down) between the
TRIM pin and the Vo(-) (or Sense(-)) pin decreases the
output voltage set point. To maintain set point accuracy,
the trim resistor tolerance should be ±1.0%.
The following equation determines the required external
resistor value to obtain a percentage output voltage
change of ∆%
For output voltage: 1.0V to 12V
22.10
%
511
downtrim
R
Where 100% ,
,
seto
desiredseto V
VV
For example, to trim-down the output voltage of 2.5V
module (EQW035A0G/G1) by 8% to 2.3V, Rtrim-down is
calculated as follows:
8%
22.10
8
511
downtrim
R
655.53
downtrim
R
Connecting an external resistor (Rtrim-up) between the
TRIM pin and the VO(+) (or Sense (+)) pin increases the
output voltage set point. The following equations
determine the required external resistor value to obtain
a percentage output voltage change of ∆%:
For output voltage: 1.5V to 12V
22.10
%
511
%225.1
%)100(11.5 ,seto
uptrim V
R
For output voltage: 1.0V to 1.2V
22.10
%
511
%6.0
%)100(11.5 ,seto
uptrim V
R
Where 100% ,
,
seto
setodesired
V
VV
For example, to trim-up the output voltage of 1.2V
module (EQW040A0P/P1) by 5% to 1.26V, Rtrim-up is
calculated is as follows:
5%
22.10
5
511
56.0 )5100(2.111.5
uptrim
R
2.102
uptrim
R
Alternative voltage programming for output voltage:
1.0V to 1.2V (-V Option)
An alternative set of trimming equations is available as
an option for 1.0V and 1.2V output modules, by ordering
the –V option. These equations will reduce the resistance
of the external programming resistor, making the
impedance into the module trim pin lower for
applications in high electrical noise applications.
2
%
100
downtrim
R
%
100
uptrim
R
Where 100% ,
,
seto
setodesired
V
VV
For example, to trim-up the output voltage of 1.2V
module (EQW040A0P/P1-V) by 5% to 1.26V, Rtrim-up is
calculated is as follows:
5%
5
100
uptrim
R
0.20
uptrim
R
The value of the external trim resistor for the optional –V
1.2V module is only 20% of the value required with the
standard trim equations.
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 18
Feature Descriptions (continued)
The voltage between the Vo(+) and Vo(–) terminals must
not exceed the minimum output overvoltage protection
value shown in the Feature Specifications table. This limit
includes any increase in voltage due to remote-sense
compensation and output voltage set-point adjustment
trim.
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum increase is the larger of either the remote
sense or the trim. The amount of power delivered by the
module is defined as the voltage at the output terminals
multiplied by the output current. When using remote
sense and trim, the output voltage of the module can be
increased, which at the same output current would
increase the power output of the module. Care should be
taken to ensure that the maximum output power of the
module remains at or below the maximum rated power
(Maximum rated power = Vo,set x Io,max).
Thermal Considerations
The power modules operate in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of
the module will result in an increase in reliability. The
thermal data presented here is based on physical
measurements taken in a wind tunnel.
The thermal reference point, Tref used in the
specifications for open frame modules is shown in Figure
63. For reliable operation this temperature should not
exceed 120oC.
Figure 63. Tref Temperature Measurement Location
for open Frame Module.
The thermal reference point, Tref used in the
specifications for modules with heat plates (-C or –H) is
shown in Figure 64. For reliable operation this
temperature should not exceed 110oC for airflow rates
below 1.0m/s (200LFM), and should not exceed 105oC for
airflow rates equal to or above 1.0m/s (200LFM).
Figure 64. Tref Temperature Measurement Location
for Heat plate Module.
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame Board-
Mounted Power Modules” for a detailed discussion of
thermal aspects including maximum device
temperatures.
Through-Hole Soldering Information
The RoHS-compliant (Z codes) through-hole products use
the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant
components. The RoHS-compliant with lead solder
exemption (non-Z codes) through-hole products use
Sn/Pb solder and RoHS-compliant components. Both
non-Z and Z codes are designed to be processed
through single or dual wave soldering machines. The
pins have an RoHS-compliant finish that is compatible
with both Pb and Pb-free wave soldering processes. A
maximum preheat rate of 3C/s is suggested. The wave
preheat process should be such that the temperature of
the power module board is kept below 210C. For Pb
solder, the recommended pot temperature is 260C,
while the Pb-free solder pot is 270C max. Not all RoHS-
compliant through-hole products can be processed with
paste-through-hole Pb or Pb-free reflow process. If
additional information is needed, please consult with
your GE representative for more details.
Surface Mount Information
Pick and Place
The EQW010-040 modules use an open frame
construction and are designed for a fully automated
assembly process. The modules are fitted with a label
designed to provide a large surface area for pick and
place operations. The label meets all the requirements
for surface mount processing, as well as safety
standards, and is able to withstand reflow temperatures
of up to 300oC. The label also carries product
information such as product code, serial number and the
location of manufacture.
Surface Mount Information (continued)
AIRFLOW
AIRFLOW
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 19
Figure 65. Pick and Place Location.
Nozzle Recommendations
The module weight has been kept to a minimum by
using open frame construction. Even so, these modules
have a relatively large mass when compared to
conventional SMT components. Variables such as nozzle
size, tip style, vacuum pressure and placement speed
should be considered to optimize this process. The
minimum recommended nozzle diameter for reliable
operation is 6mm. The maximum nozzle outer diameter,
which will safely fit within the allowable component
spacing, is 9 mm.
Oblong or oval nozzles up to 11 x 9 mm may also be
used within the space available.
Reflow Soldering Information
The surface mountable modules in the EQW family use
our newest SMT technology called “Column Pin” (CP)
connectors. Figure 66 shows the new CP connector
before and after reflow soldering onto the end-board
assembly.
EQW Board
Insulator
Solder Ball
End assembly PCB
Figure 66. Column Pin Connector Before and After
Reflow Soldering.
The CP is constructed from a solid copper pin with an
integral solder ball attached, which is composed of
tin/lead (Sn63/Pb37) solder for non-Z codes, or
Sn/Ag3.8/Cu0.7 (SAC) solder for –Z codes. The CP
connector design is able to compensate for large
amounts of co-planarity and still ensure a reliable SMT
solder joint. Typically, the eutectic solder melts at 183oC
(Sn/Pb solder) or 217-218 oC (SAC solder), wets the land,
and subsequently wicks the device connection. Sufficient
time must be allowed to fuse the plating on the
connection to ensure a reliable solder joint. There are
several types of SMT reflow technologies currently used
in the industry. These surface mount power modules
can be reliably soldered using natural forced convection,
IR (radiant infrared), or a combination of convection/IR.
The following instructions must be observed when SMT
soldering these units. Failure to observe these
instructions may result in the failure of or cause damage
to the modules, and can adversely affect long-term
reliability.
Tin Lead Soldering
The recommended linear reflow profile using Sn/Pb
solder is shown in Figure 67 and 68. For reliable
soldering the solder reflow profile should be established
by accurately measuring the modules CP connector
temperatures.
REFLOW TEMP (C)
0
50
10 0
15 0
200
250
300
Preheat zone
max 4
o
Cs
-1
So ak zone
30-240s
Heat zone
max 4
o
Cs
-1
Peak Temp 235
o
C
Cooling
zo ne
1- 4
o
Cs
-1
Tlim above
205oC
REFLOW TIME (S)
Figure 67. Recommended Reflow Profile for Tin/Lead
(Sn/Pb) process.
MAX TEMP SOLDER (C)
200
205
210
215
220
225
230
235
240
0 102030405060
Figure 68. Time Limit, Tlim, Curve Above 205oC for
Tin/Lead (Sn/Pb) process.
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 20
Surface Mount Information (continued)
Lead Free Soldering
The –Z version of the EQW010-040 modules are lead-
free (Pb-free) and RoHS compliant and are both forward
and backward compatible in a Pb-free and a SnPb
soldering process. Failure to observe the instructions
below may result in the failure of or cause damage to
the modules and can adversely affect long-term
reliability.
Pb-free Reflow Profile
Power Systems will comply with J-STD-020 Rev. C
(Moisture/Reflow Sensitivity Classification for
Nonhermetic Solid State Surface Mount Devices) for both
Pb-free solder profiles and MSL classification procedures.
This standard provides a recommended forced-air-
convection reflow profile based on the volume and
thickness of the package (table 4-2). The suggested Pb-
free solder paste is Sn/Ag/Cu (SAC). The recommended
linear reflow profile using Sn/Ag/Cu solder is shown in
Fig. 69.
Per J-STD-020 Re v. C
0
50
100
150
200
250
300
Reflow Time (Seconds)
Reflow Temp (°C)
Hea ting Zone
1°C/Second
Pe ak Temp 260°C
* Min. Time Above 235°C
15 Se c o nds
*Time Above 217°C
60 Sec o nds
Cooling
Zone
Figure 69. Recommended linear reflow profile using
Sn/Ag/Cu solder.
MSL Rating
The EQW010-040 modules have a MSL rating of 1.
Storage and Handling
The recommended storage environment and handling
procedures for moisture-sensitive surface mount
packages is detailed in J-STD-033 Rev. A (Handling,
Packing, Shipping and Use of Moisture/Reflow Sensitive
Surface Mount Devices). Moisture barrier bags (MBB)
with desiccant are required for MSL ratings of 2 or
greater. These sealed packages should not be broken
until time of use. Once the original package is broken,
the floor life of the product at conditions of 30°C and
60% relative humidity varies according to the MSL rating
(see J-STD-033A). The shelf life for dry packed SMT
packages will be a minimum of 12 months from the bag
seal date, when stored at the following conditions: < 40°
C, < 90% relative humidity.
Post Solder Cleaning and Drying Considerations
Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate cleaning and drying can affect both
the reliability of a power module and the testability of
the finished circuit-board assembly. For guidance on
appropriate soldering, cleaning and drying procedures,
refer to GE Board Mounted Power Modules: Soldering and
Cleaning Application Note (AN04-001).
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 21
Mechanical Outline for Surface Mount Module
Dimensions are in millimeters and [inches].
Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated)
x.xx mm 0.25 mm [x.xxx in 0.010 in.]
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GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 22
Mechanical Outline for Through-Hole Module
Dimensions are in millimeters and [inches].
Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated)
x.xx mm 0.25 mm [x.xxx in 0.010 in.]
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#Top side label includes GE name, product designation and date code.
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GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 23
Mechanical Outline for Through-Hole Module with Heat Plate (-C)
Dimensions are in millimeters and [inches].
Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated)
x.xx mm 0.25 mm [x.xxx in 0.010 in.]
Top
View
Side
View
Bottom
View#
# Bottom side label includes GE name, product designation and date code.
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 24
Mechanical Outline for Through-Hole Module with Heat Plate (-H)
Dimensions are in millimeters and [inches].
Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated)
x.xx mm 0.25 mm [x.xxx in 0.010 in.]
Top
View
Side
View
Bottom
View#
# Bottom side label includes GE name, product designation and date code.
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 25
Recommended Pad Layout
Dimensions are in millimeters and [inches].
Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated)
x.xx mm 0.25 mm [x.xxx in 0.010 in.]
SMT Recommended Pad Layout (Component Side View)
TH Recommended Pad Layout (Component Side View)
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 26
Packaging Details
The surface mount versions of the EQW surface mount
modules (suffix –S) are supplied as standard in the
plastic tray shown in Figure 68. The tray has external
dimensions of 135.1mm (W) x 321.8mm (L) x 12.42mm (H)
or 5.319in (W) x 12.669in (L) x 0..489in (H).
Tray Specification
Material Antistatic coated PVC
Max surface resistivity 1012/sq
Color Clear
Capacity 12 power modules
Min order quantity 48 pcs (1 box of 4 full trays)
Each tray contains a total of 12 power modules. The
trays are self-stacking and each shipping box will
contain 4 full trays plus one empty hold down tray giving
a total number of 48 power modules.
Figure 68. Surface Mount Packaging Tray.
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 27
Ordering Information
Please contact your GE Sales Representative for pricing, availability and optional features.
Table 1. Device Codes
Product Codes Input Voltage Output
Voltage
Output
Current
On/Off
Logic
Connector
Type Comcodes
EQW010A0B1 48V (36-75Vdc) 12V 10A Negative Through hole 108997284
EQW020A0A41-SB 48V (36-75Vdc) 5V 20A Negative Surface Mount CC109103966
EQW030A0F1 48V (36-75Vdc) 3.3V 30A Negative Through hole 108996096
EQW010A0BZ 48V (36-75Vdc) 12V 10A Positive Through hole CC109129152
EQW010A0B1Z 48V (36-75Vdc) 12V 10A Negative Through hole CC109114823
EQW010A0B641Z 48V (36-75Vdc) 12V 10A Negative Through hole CC109122116
EQW010A0B4-CZ 48V (36-75Vdc) 12V 10A Positive Through hole CC109146404
EQW010A0B41-CZ 48V (36-75Vdc) 12V 10A Negative Through hole CC109135043
EQW010A0B1-HZ 48V (36-75Vdc) 12V 10A Negative Through hole CC109122207
EQW010A0B1-SZ 48V (36-75Vdc) 12V 10A Negative Surface Mount CC109114641
EQW010A0B41-SZ 48V (36-75Vdc) 12V 10A Negative Surface Mount CC109127957
EQW020A0A1Z 48V (36-75Vdc) 5V 20A Negative Through hole CC109114402
EQW020A0A61Z 48V (36-75Vdc) 5V 20A Negative Through hole CC109132701
EQW020A0A641Z 48V (36-75Vdc) 5V 20A Negative Through hole CC109139052
EQW020A0A81Z 48V (36-75Vdc) 5V 20A Negative Through hole CC109151560
EQW020A0A61-CZ 48V (36-75Vdc) 5V 20A Negative Through hole CC109127817
EQW020A0A641-CZ 48V (36-75Vdc) 5V 20A Negative Through hole CC109149051
EQW020A0A1-HZ 48V (36-75Vdc) 5V 20A Negative Through hole CC109122198
EQW020A0A4-HZ 48V (36-75Vdc) 5V 20A Positive Through hole CC109140415
EQW020A0A41-HZ 48V (36-75Vdc) 5V 20A Negative Through hole CC109143517
EQW020A0A41-SZ 48V (36-75Vdc) 5V 20A Negative Surface Mount CC109113866
EQW020A0A41-SBZ 48V (36-75Vdc) 5V 20A Negative Surface Mount CC109114096
EQW030A0F1Z 48V (36-75Vdc) 3.3V 30A Negative Through hole CC109114063
EQW030A0F41Z 48V (36-75Vdc) 3.3V 30A Negative Through hole CC109121225
EQW030A0F61Z 48V (36-75Vdc) 3.3V 30A Negative Through hole CC109136132
EQW030A0F641Z 48V (36-75Vdc) 3.3V 30A Negative Through hole CC109138921
EQW030A0F841Z 48V (36-75Vdc) 3.3V 30A Negative Through hole CC109133402
EQW030A0F1-HZ 48V (36-75Vdc) 3.3V 30A Negative Through hole CC109122173
EQW030A0F41-HZ 48V (36-75Vdc) 3.3V 30A Negative Through hole CC109137353
EQW030A0F641-HZ 48V (36-75Vdc) 3.3V 30A Negative Through hole CC109141033
EQW030A0F41-SZ 48V (36-75Vdc) 3.3V 30A Negative Surface Mount CC109129158
EQW035A0GZ 48V (36-75Vdc) 2.5V 35A Positive Through hole CC109162335
EQW035A0G1Z 48V (36-75Vdc) 2.5V 35A Negative Through hole CC109114427
EQW035A0G641Z 48V (36-75Vdc) 2.5V 35A Negative Through hole CC109138938
EQW040A0Y1Z 48V (36-75Vdc) 1.8V 40A Negative Through hole CC109114451
EQW040A0Y641Z 48V (36-75Vdc) 1.8V 40A Negative Through hole CC109132180
EQW040A0Y41-SZ 48V (36-75Vdc) 1.8V 40A Negative Surface Mount CC109129202
EQW040A0M1Z 48V (36-75Vdc) 1.5V 40A Negative Through hole CC109114435
EQW040A0M61-CZ 48V (36-75Vdc) 1.5V 40A Negative Through hole CC109127593
EQW040A0P1Z 48V (36-75Vdc) 1.2V 40A Negative Through hole CC109114443
EQW040A0P641Z 48V (36-75Vdc) 1.2V 40A Negative Through hole CC109121258
EQW040A0P41-SZ 48V (36-75Vdc) 1.2V 40A Negative Surface Mount CC109127841
EQW040A0S1R01Z 48V (36-75Vdc) 1.0V 40A Negative Through hole CC109114492
EQW040A0S1R041-SZ 48V (36-75Vdc) 1.0V 40A Negative Surface Mount CC109125787
-Z Indicates RoHS Compliant modules
GE Data Sheet
EQW010-040 Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 1.0 to 12.0Vdc Output; 10 to 40A Output Current
Contact Us
For more information, call us at
USA/Canada:
+1 877 546 3243, or +1 972 244 9288
Asia-Pacific:
+86.021.54279977*808
Europe, Middle-East and Africa:
+49.89.878067-280
www.gecriticalpower.com
GE Critical Power reserves the right to make changes to the product(s) or information contained herein without notice, and no
liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such
product(s) or information.
October 1, 2015 ©2012 General Electric Company. All International rights reserved. Version 1.27
Table 2. Device Options
Note: Legacy device codes may contain a –B option suffix to indicate 100% factory Hi-Pot tested to the isolation voltage specified in the
Absolute Maximum Ratings table. The 100% Hi-Pot test is now applied to all device codes, with or without the –B option suffix. Existing
comcodes for devices with the –B suffix are still valid; however, no new comcodes for devices containing the –B suffix will be created.
Option*
Suffix**
Negative remote on/off logic 1
Auto Re-start (for Over Current / Over voltage Protection) 4
Pin Length: 3.68 mm ± 0.25mm , (0.145 in. ± 0.010 in.) 6
Pin Length: 2.79 mm ± 0.25mm , (0.110 in. ± 0.010 in.) 8
Heat plate (Module height = 12.2 mm (0.48 in.) nominal, use with cold-plates -C
Heat plate (Module height = 10.4 mm (0.41 in.) nominal, use with heat sinks -H
Surface mount connections (not available with heat plate options -C, -H) -S
Alternative Voltage Programming equations (1.0V and 1.2V modules only) -V
