Data Sheet
October 8, 2004
Document No: DS03-074 ver. 0.9
PDF No: eqw_12-25-ds.pdf
EQW012/020/023/025 Series, Eighth-Brick Power Modules: dc-dc Converters;
36 - 75Vdc Input; 1.0Vdc to 5Vdc Output; 12A to 25A Output current
* UL is a registered trademark of Underwriters Laboratories, Inc.
† CSA is a registered trademark of Canadian Standards Association.
‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
§ This product is intended for integration into end-user equipment. All the required procedures for CE marking of end-user equipment should be followed. (The CE mark is
placed on selected products.)
** ISO is a registered trademark of the International Organization of Standards
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
Remote On/Off logic (positive or negative)
Surface Mount (-S Suffix)
Basic Insulation Approved (-B Suffix)
Short Pins
Description
The EQW series, Eighth-brick power modules are isolated
dc-dc converters that can deliver up to 25A of output
current and provide a precisely regulated output voltage
over a wide range of input voltages (Vi = 36 -75Vdc). The
modules achieve full load efficiency of 89% at 3.3V output
voltage. The open frame modules construction, available in
both surface-mount and through-hole packaging, enable
designers to develop cost- and space-efficient solutions.
Standard features include remote On/Off, remote sense,
output voltage adjustment, over voltage, over current and
over temperature protection.
Features
Delivers up to 25A output current
High efficiency: 89% at 3.3V full load (Vin = 48Vdc)
Industry-Standard Eighth-brick foot print:
57.9 mm x 22.8 mm x 8.52 mm
(2.28 in x 0.90 in x 0.335 in)
Low output ripple and noise
Surface mount or through hole
Cost efficient open frame design
Remote On/Off positive logic (primary referenced)
Remote Sense
Adjustable output voltage (± 10%)
Constant switching frequency (285kHz)
Output over voltage and over current protection
Over temperature protection
Input undervoltage lockout
Wide operating temperature range (-40°C to 85°C)
UL* 60950 Recognized, CSA† C22.2 No. 60950-00
Certified, and VDE‡ 0805 (IEC60950, 3rd edition)
Licensed
CE mark meets 73/23/EEC and 93/68/EEC
directives§
ISO** 9001 and ISO14001 certified manufacturing
facilities
Meets the voltage and current requirements for
ETSI 300-132-2 and complies with and licensed for
Basic insulation rating per IEC60950 3rd edition (-B
version only)
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
2 Tyco Electronics Power Systems
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 EQW VIN -0.3 80 Vdc
Continuous
Transient (100ms) EQW 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 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 IIN,max 3 Adc
(VIN=0V to 75V, IO=IO, max)
Input No Load Current All IIN,No load 75 mA
(Vin = 48Vdc, Io = 0, module enabled)
Input Stand-by Current All IIN,stand-by 3 mA
(Vin = 48Vdc, module disabled)
Inrush Transient All I2t 1 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12µH source impedance; VIN=0V to
75V, IO= IOmax ; see Test Configuration section)
All 13 mAp-p
Input Ripple Rejection (120Hz) All 50 dB
EMC, EN55022
See EMC Considerations section
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 a sophisticated power architecture. 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 fast-acting
fuse with a maximum rating of 6A (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.
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 3
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set-point 1.0Vdc VO, set 0.98 1.0 1.02 Vdc
(VIN=VIN,nom, IO=IO, max, Tref=25°C) 1.2 Vdc VO, set 1.18 1.2 1.22 Vdc
1.5 Vdc VO, set 1.47 1.5 1.53 Vdc
1.8 Vdc VO, set 1.76 1.8 1.84 Vdc
2.5V dc VO, set 2.45 2.5 2.55 Vdc
3.3 Vdc VO, set 3.25 3.3 3.35 Vdc
5.0 Vdc VO, set 4.90 5.0 5.10 Vdc,
Output Voltage 1.0Vdc VO 0.97 1.03 Vdc
(Over all operating input voltage, resistive load, 1.2 Vdc VO 1.16 1.24 Vdc
and temperature conditions until end of life) 1.5 Vdc VO 1.45 1.55 Vdc
1.8 Vdc VO 1.74 1.86 Vdc
2.5V dc VO 2.42 2.57 Vdc
3.3 Vdc VO 3.2 3.4 Vdc
5.0 Vdc VO 4.85 5.15 Vdc,
Adjustment Range 1.8Vdc VO -10 +12 % VO, set
Selected by external resistor 2.5Vdc VO -10 +20 % VO, set
3.3Vdc VO -20 +10 % VO, set
All others VO -10.0 +10 % VO, set
Output Regulation
Line (VIN=VIN, min to VIN, max) All
0.1 % VO, set
Load (IO=IO, min to IO, max) All
10 mV
Temperature (Tref=TA, min to TA, max) All
0.2 % VO, set
Output Ripple and Noise on nominal output
measured with 10µF Tantalum, 1µF ceramic
(VIN=VIN, nom and IO=IO, min to IO, max)
RMS (5Hz to 20MHz bandwidth) 5.0 Vdc 18 35 mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth) 5.0 Vdc 50 90 mVpk-pk
RMS (5Hz to 20MHz bandwidth) All others 8 20 mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth) All others 40 75 mVpk-pk
External Capacitance* 5.0 Vdc CO, max 0 3000 µF
All others CO, max 0 5000 µF
Output Current 1.0Vdc Io 0 ― 25.0 Adc
1.2 Vdc Io 0 ― 25.0 Adc
1.5 Vdc Io 0 ― 25.0 Adc
1.8 Vdc Io 0 ― 25.0 Adc
2.5V dc Io 0 ― 23.0 Adc
3.3 Vdc Io 0 ― 20.0 Adc
5.0 Vdc Io 0 ― 12.0 Adc
Output Current Limit Inception 1.0Vdc IO, lim 35 Adc
(Vo = 90% of VO, set) Hiccup mode 1.2 Vdc IO, lim 35 Adc
1.5 Vdc IO, lim 35 Adc
1.8 Vdc IO, lim 35 Adc
2.5V dc IO, lim 30 Adc
3.3 Vdc IO, lim 25 Adc
5.0 Vdc IO, lim 15 Adc
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
4 Tyco Electronics Power Systems
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Output Short-circuit Current (Average) 1.0Vdc Io,sc 3 Adc
(Vo = 0.25V) 1.2 Vdc Io,sc 3 Adc
1.5 Vdc
Io,sc 3 Adc
1.8 Vdc
Io,sc 3 Adc
2.5V dc
Io,sc 3 Adc
3.3 Vdc
Io,sc 3 Adc
5.0 Vdc
Io,sc 3 Adc
Efficiency 1.0Vdc η 80.0 %
VIN=VIN, nom, TA=25°C 1.2 Vdc η 81.0 %
IO=IO, max , VO= VO,set 1.5 Vdc η 81.0 %
1.8 Vdc η 84.0 %
2.5V dc η 87.0 %
3.3 Vdc η 89.0 %
5.0 Vdc η 91.0 %
Switching Frequency All fsw 300 kHz
Dynamic Load Response
(∆Io/∆t=0.1A/µs; Vin=Vin,set; TA=25°C) All Vpk 200 mV
Load Change from Io= 50% to 75% of Io,max;
10µF Tantalum, 1µF ceramic external capacitance
Peak Deviation
Settling Time (Vo<10% peak deviation) All ts 200 µs
(∆Io/∆t=0.1A/µs; Vin=Vin,set; TA=25°C) All Vpk 200 mV
Load Change from Io= 50% to 25% of Io,max;
10µF Tantalum, 1µF ceramic external capacitance
Peak Deviation
Settling Time (Vo<10% peak deviation) All ts 200 µs
Isolation Specifications
Parameter Symbol Min Typ Max Unit
Isolation Capacitance Ciso 1000 pF
Isolation Resistance Riso 10 MΩ
General Specifications
Parameter Min Typ Max Unit
Calculated MTBF (IO=IO, max, TA=25°C) 2,686,000 Hours
Tyco RIN (Reliability Information Notebook) Method
Weight 15.2 (0.6) g (oz.)
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 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 Specification
Remote On/Off Current – Logic Low All Ion/off 0.15 1.0 mA
On/Off Voltage:
Logic Low All Von/off -0.7 1.2 V
Logic High – (Typ = Open Collector) All Von/off 15 V
Logic High maximum allowable leakage current All Ion/off 10 µA
Turn-On Delay and Rise Times
(VI =48Vdc, IO=IO, max , VO to within ±1% of steady state)
Case 1: On/Off input is set to Logic high and then
input power is applied (delay from instant at
which VI = VI,min until Vo = 10% of Vo, set)
All Tdelay 20 msec
Case 2: Input power is applied for at least one
second and then the On/Off input is set to logic high
(delay from instant at which Von/Off = 0.9V until Vo
= 10% of Vo, set)
All Tdelay 12 msec
Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set)
All Trise ― 0.9 ― msec
Output voltage overshoot
(Io = 80% of Io,max, VI = 48Vdc TA=25°C) All ― ― 5 %VO, set
Output Voltage Remote Sense
1.0, 1.2,
1.5
,
1.8Vdc ― ― 0.25 Vdc
2.5, 3.3,
5.0 Vdc ― ― 10 %VO, set
Output Overvoltage Protectionn (Clamp) 1.0Vdc VO, limit 2.0 2.8 Vdc
1.2 Vdc VO, limit 2.0 2.8 Vdc
1.5 Vdc VO, limit 2.3 3.2 Vdc
1.8 Vdc VO, limit 2.3 3.2 Vdc
2.5V dc VO, limit 3.1 3.7 Vdc
3.3 Vdc VO, limit 4.0 4.6 Vdc
5.0 Vdc VO, limit 6.1 7.0 Vdc
Overtemperature Protection All Tref 125 °C
(See thermal section)
Input Undervoltage Lockout
Turn-on Threshold All ― 32 36 V
Turn-off Threshold All 25 27 ― V
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
6 Tyco Electronics Power Systems
Characteristic Curves
The following figures provide typical characteristics for theEQW025A0P1 (1.2V, 25A) at 25ºC (except derating curve).
The figures are identical for either positive or negative Remote On/Off logic.
70
72
74
76
78
80
82
84
86
0510152025
Vin=75V
Vin=36V
Vin=48V
0
3
6
9
12
15
18
21
24
27
20 30 40 50 60 70 80 90
200 LFM
300 LFM
400 LFM
NC
10 0 L F M
EFFICIENCY, η (%)
OUTPUT CURRENT
,
I
O
(
A
)
OUTPUT CURRENT, Io (A)
AMBIENT TEMPERATURE
,
T
A
O
C
Figure 1. Converter Efficiency versus Output Current Figure 4. Derating Output Current versus Local
A
mbient Temperature and Airflow
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (1µs/div)
INPUT VOLTAGE , OUTPUT VOLTAGE
V IN (A) (20V/div) VO (V) (1V/div)
TIME, t (5msec/div)
Figure 2. Typical Output Ripple and Noise (Vin
=48Vdc, Io = 25A).
Figure 5. Typical Start-Up with application of Vin (Vin
= 48Vdc, Io = 25A).
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (100mV/div)
TIME, t (100µs/div)
On/Off VOLTAGE OUTPUT VOLTAGE
VON/OFF(V) (5V/div) VO (V) (1/div)
TIME, t (5ms/div)
Figure 3. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load (Vin
=48Vdc).
Figure 6. Typical Start-Up Using Remote On/Off,
negative logic version shown (Vin = 48Vdc, Io = 25A).
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 7
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW025A0M (1.5V, 25A) at 25ºC (except derating curve).
The figures are identical for either positive or negative Remote On/Off logic.
70
72
74
76
78
80
82
84
86
88
0 5 10 15 20 25
Vin=75V
Vin=36V
Vin=48V
0
3
6
9
12
15
18
21
24
27
20 30 40 50 60 70 80 90
200 LFM
300 LFM
400 LFM
NC
10 0 L F M
EFFICIENCY, η (%)
OUTPUT CURRENT, IO (A)
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
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (1µs/div)
INPUT VOLTAGE , OUTPUT VOLTAGE
V IN (A) (20V/div) VO (V) (1V/div)
TIME, t (5ms/div)
Figure 8. Typical Output Ripple and Noise (Vin
=48Vdc, Io = 25A).
Figure 11. Typical Start-Up with application of Vin (Vin
= 48Vdc, Io = 25A).
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (5A/div) VO (V) (200mV/div)
TIME, t (100µs/div)
On/Off VOLTAGE OUTPUT VOLTAGE
VON/OFF(V) (5V/div) VO (V) (1V/div)
TIME, t (5ms/div)
Figure 9. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load (Vin
=48Vdc).
Figure 12. Typical Start-Up Using Remote On/Off,
negative logic version shown (Vin = 48Vdc, Io = 25A).
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
8 Tyco Electronics Power Systems
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW025A0Y (1.8V, 25A) at 25ºC (except derating curve).
The figures are identical for either positive or negative Remote On/Off logic.
72
74
76
78
80
82
84
86
88
90
0 5 10 15 2 0 2 5
Vin=75V
Vin=36V
Vin=48V
0
3
6
9
12
15
18
21
24
27
20 30 40 50 60 70 80 90
200 LFM
300 LFM
400 LFM
NC
10 0 L F M
EFFICIENCY, η (%)
OUTPUT CURRENT, IO (A)
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
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (1µs/div)
INPUT VOLTAGE , OUTPUT VOLTAGE
V IN (A) (20V/div) VO (V) (1V/div)
TIME, t (5ms/div)
Figure 14. Typical Output Ripple and Noise (Vin
=48Vdc, Io = 25A)..
Figure 17. Typical Start-Up with application of Vin (Vin
= 48Vdc, Io = 25A).
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (100mV/div)
TIME, t (100µs/div)
On/Off VOLTAGE, OUTPUT VOLTAGE
VON/OFF(V) (5V/div) VO (V) (1V/div)
TIME, t (5ms/div)
Figure 15. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load (Vin
=48Vdc).
Figure 18. Typical Start-Up Using Remote On/Off,
negative logic version shown (Vin = 48Vdc, Io = 25A).
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 9
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW023A0G (2.5V, 23A) at 25ºC (except derating curve).
The figures are identical for either positive or negative Remote On/Off logic.
74
76
78
80
82
84
86
88
90
92
0 5 10 15 20 25
Vin=75V
Vin=36V
Vin=48V
0
3
6
9
12
15
18
21
24
20 30 40 50 60 70 80 90
100 LFM
200 LFM
400 LFM
NC
300 LFM
EFFICIENCY, η (%)
OUTPUT CURRENT, IO (A)
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
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (1µs/div)
INPUT VOLTAGE , OUTPUT VOLTAGE
V IN (A) (20V/div) VO (V) (1V/div)
TIME, t (100µs/div)
Figure 20. Typical Output Ripple and Noise (Vin
=48Vdc, Io = 23A).
Figure 23. Typical Start-Up with application of Vin
(Vin = 48Vdc, Io = 23A).
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (100mV/div)
TIME, t (100µs/div)
On/Off VOLTAGE, OUTPUT VOLTAGE
VON/OFF(V) (5V/div) VO (V) (1V/div)
TIME, t (5ms/div)
Figure 21. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load (Vin
=48Vdc).
Figure 24. Typical Start-Up Using Remote On/Off,
negative logic version shown (Vin = 48Vdc, Io = 23A).
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
10 Tyco Electronics Power Systems
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW020A0F (3.3V, 20A) at 25ºC (except derating curve).
The figures are identical for either positive or negative Remote On/Off logic.
70
73
76
79
82
85
88
91
94
0 4 8121620
Vin=75V
Vin=36V
Vin=48V
0
2
4
6
8
10
12
14
16
18
20
22
20 30 40 50 60 70 80 90
10 0 LF M
200 LFM
400 LFM
NC
300 LFM
EFFICIENCY, η (%)
OUTPUT CURRENT, IO (A)
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
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (1µs/div)
INPUT VOLTAGE , OUTPUT VOLTAGE
V IN (A) (20V/div) VO (V) (1V/div)
TIME, t (5ms/div)
Figure 26. Typical Output Ripple and Noise (Vin
=48Vdc, Io = 20A).
Figure 29. Typical Start-Up with application of Vin (Vin
= 48Vdc, Io = 20A).
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (100mV/div)
TIME, t (100µs/div)
On/Off VOLTAGE, OUTPUT VOLTAGE
VON/OFF(V) (5V/div) VO (V) (1V/div)
TIME, t (5ms/div)
Figure 27. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load (Vin
=48Vdc).
Figure 30. Typical Start-Up Using Remote On/Off,
negative logic version shown (Vin = 48Vdc, Io = 20A).
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 11
Characteristic Curves (continued)
The following figures provide typical characteristics for the EQW012A0A (5.0V, 12A) at 25ºC (except derating curve).
The figures are identical for either positive or negative Remote On/Off logic.
70
73
76
79
82
85
88
91
94
036912
Vin=75V
Vin=36V
Vin=48V
0
2
4
6
8
10
12
14
20 30 40 50 60 70 80 90
200 LFM
300 LFM
400 LFM
NC
100 LFM
EFFICIENCY, η (%)
OUTPUT CURRENT, IO (A)
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
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (1µs/div)
INPUT VOLTAGE , OUTPUT VOLTAGE
V IN (A) (20V/div) VO (V) (2V/div)
TIME, t (5ms/div)
Figure 32. Typical Output Ripple and Noise (Vin
=48Vdc, Io = 12A).
Figure 35. Typical Start-Up with application of Vin
(Vin = 48Vdc, Io = 12A).
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (5A/div) VO (V) (100mV/div)
TIME, t (100µs/div)
On/Off VOLTAGE, OUTPUT VOLTAGE
VON/OFF(V) (5V/div) VO (V) (2V/div)
TIME, t (5ms/div)
Figure 33. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of full load (Vin
=48Vdc).
Figure 36. Typical Start-Up Using Remote On/Off,
negative logic version shown (Vin = 48Vdc, Io = 12A).
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
12 Tyco Electronics Power Systems
Test Configurations
E.S.R.
<0.1Ω
@ 100kHz
TO OSCILLOSCOPE CURRENT PROBE
LTEST
12µH
BATTERY
CS 220µF
E.S.R.<0.1Ω
@ 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 37. 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
(
–
)
1uF .
RESISTIVE
LOAD
SCOPE
COPPER STRIP
GROUND PLANE
10uF
Figure 38. Output Ripple and Noise Test Setup
VO
COM
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.
η =
VO. IO
VIN. IIN
x 100 %
Efficiency
Figure 39. Output Voltage and Efficiency Test Setup
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.,
UL60950, CSA C22.2 No. 60950-00 and VDE
0805:2001-12 (IEC60950, 3rd Ed).
These converters have been evaluated to the spacing
requirements for Basic Insulation, per the above safety
standards.
For Basic Insulation models (“-B” Suffix), 1500 Vdc is
applied from Vi to Vo to 100% of outgoing production.
For end products connected to –48V dc, or –60Vdc
nominal DC MAINS (i.e. central office dc battery plant),
no further fault testing is required. *Note: -60V dc
nominal battery plants are not available in the U.S. or
Canada.
For all input voltages, other than DC MAINS, where the
input voltage is less than 60V dc, if the input meets all of
the requirements for SELV, then:
• The output may be considered SELV. Output
voltages will remain within SELV limits even with
internally-generated non-SELV voltages. Single
component failure and fault tests were performed in
the power converters.
• One pole of the input and one pole of the output are
to be grounded, or both circuits are to be kept
floating, to maintain the output voltage to ground
voltage within ELV or SELV limits.
For all input sources, other than DC MAINS, where the
input voltage is between 60 and 75V dc (Classified as
TNV-2 in Europe), the following must be adhered to, if
the converter’s output is to be evaluated for SELV:
• The input source is to be provided with reinforced
insulation from any hazardous voltage, including the
AC mains.
• One Vi pin and one Vo pin are to be reliably earthed,
or both the input and output pins are to be kept
floating.
• Another SELV reliability test is conducted on the
whole system, as required by the safety agencies,
on the combination of supply source and the subject
module to verify that under a single fault, hazardous
voltages do not appear at the module’s output.
The power module has ELV (extra-low voltage) outputs
when all inputs are ELV.
All flammable materials used in the manufacturing of
these modules are rated 94V-0, and UL60950 A.2 for
reduced thickness. The input to these units is to be
provided with a maximum 6A time- delay in the
unearthed lead.
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 13
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance source. A highly inductive source
impedance can affect the stability of the power module.
For the test configuration in Figure 37, a 33µF
electrolytic capacitor (ESR<0.7Ω at 100kHz), mounted
close to the power module helps ensure the stability of
the unit. Consult the factory for further application
guidelines.
Feature Descriptions
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
VO
COM
Figure 40. 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 (Figure 40). Logic low is –0.7V ≤
Von/off ≤ 1.2V. The maximum Ion/off during a logic low is
1mA, the switch should be maintain a logic low level
while sinking this current.
During a logic high, the typical Von/off generated by the
module is 15V, and the maximum allowable leakage
current at Von/off = 15V is 10µA.
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 41). 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
DISTRI BUTI ON L O SSE
S
SUPPLY II
CONTACT
RESISTANCE
Figure 41. Effective Circuit Configuration for remote
sense operation
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
14 Tyco Electronics Power Systems
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment
(Trim)
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 (COM pin) .
VO(+)
VOTRIM
VO(-)
Rtrim-down
LOAD
VIN(+)
ON/OFF
VIN(-)
Rtrim-up
Figure 42. 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 ±0.1%.
The following equation determines the required external
resistor value to obtain a percentage output voltage
change of ∆%
For output voltage: 1.2 V to 12V
ΚΩ
−
∆
=− 2.10
%
510
downRtrim
Where
100
,
,
%×
−
=∆ setVo
VdesiredsetVo
For example, to trim-down the output voltage of 2.5V
module (EQW023A0G1) by 8% to 2.3V, Rtrim-down is
calculated as follows:
8% =∆
ΚΩ
−=− 2.10
8
510
downRtrim
ΚΩ=− 55.53downRtrim
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: 1.5 V to 12V
ΚΩ
−
∆
−
∆×
∆+××
=− 2.10
%
510
%225.1
%)100(,1.5 setVo
upRtrim
For output voltage: 1.2
ΚΩ
−
∆
−
∆×
∆+××
=− 2.10
%
510
%6.0
%)100(,1.5 setVo
upRtrim
Where
100
,
,
%×
−
=∆ setVo
setVoVdesired
For example, to trim-up the output voltage of 1.5V
module (EQW025A0M1) by 6% to 1.59V, Rtrim-up is
calculated is as follows:
6% =
∆
ΚΩ
−−
×
+××
=− 2.10
6
510
6225.1
)6100(5.11.5
upRtrim
ΚΩ=
−
12.15upRtrim
At 48Vin (+/- 2.5V), EQW series modules can be trim
down to 20% over the entire temperature range. This
allows for margining the unit during manufacturing
process if the set point voltage is lower than the standard
output voltage. Please consult your local Tyco field
application engineer for additional details.
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).
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 15
Feature Descriptions (continued)
Over current Protection
To provide protection in a fault (output overload) condi-
tion, the module is equipped with internal current-limiting
circuitry, and can endure current limiting continuously.
At the instance of current-limit inception, the module
enters a hiccup mode of operation, whereby it shuts
down and automatically attempts to restart. Typical
delay before a module shuts down in current limit is 30
ms and typical turn-off period in over current condition is
300 ms before module attempts to restart. While the
fault condition exists, the module will remain in this
hiccup mode, and can remain in this mode until the fault
is cleared. The unit operates normally once the output
current is reduced back into its specified range.
Output Over voltage Protection
The output over voltage protection clamp consists of
control circuitry, independent of the primary regulation
loop, that monitors the voltage on the output terminals.
This control loop has a higher voltage set point than the
primary loop (See the over voltage clamp values in the
Feature Specifications Table). In a fault condition, the
over voltage clamp ensures that the output voltage does
not exceed Vo,ovsd, max. This provides a redundant
voltage-control that reduces the risk of output
overvoltage.
Over temperature 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 43), exceeds 125oC (typical), but the thermal
shutdown is not intended as a guarantee that the unit will
survive temperatures beyond its rating. The module will
automatically restarts after it cools down.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, the module operation is disabled. The module will
begin to operate at an input voltage between the und-
ervoltage lockout limit and the minimum operating input
voltage.
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 is shown in Figure 43. For reliable
operation this temperature should not exceed 115 oC.
The output power of the module should not exceed the
rated power for the module (Vo, set x Io, max).
Air Flow
Tref
Figure 43. Tref Temperature Measurement
Location
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Derating figures showing the
maximum output current that can be delivered by each
module versus local ambient temperature (TA) for natural
convection and up to 2m/s (400 ft./min) are shown in the
respective Characteristics Curves section.
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
16 Tyco Electronics Power Systems
EMC Considerations
The figure 44 shows a suggested configuration to meet
the conducted emission limits of EN55022 Class B.
Vin+
EQW
Vin-
Vout+
Vout-
LC1
Cim
CX1
CX4
CX2 CX3
Ld1
CX5
CY1
CY2
Figure 44. Suggested Input Filter Configuration for
EN55022 Class B
Filter components:
Cx1: 47uF aluminum electrolytic, 100V (Nichicon PW series)
Cx2: 2x1uF ceramic, 100V (TDK C4532X7R2A105M)
Cx3: 2x1uF ceramic, 100V (TDK C4532X7R2A105M)
Cx4: 2x1uF ceramic, 100V (TDK C4532X7R2A105M)
Cx5: 100uF aluminum electrolytic, 100V (Nichicon PW series)
Cy3, Cy4: 3300pF ceramic, 1500V (AVX 1812SC332MAT1A)
Cim: 3300pF ceramic, 1500V (AVX 1812SC332MAT1A)
Lc1: 768 uH, 4.7A (Pulse Engineering P0422)
Ld1: 4.7 uH, 5.5A (Vishay IHLP-2525CZ)
0
10
20
30
40
50
60
70
80
Level [dBµV]
150k 300k 500k 1M 2M 3M 4M 5M 7M 10M 30M
Frequency [Hz]
+
EN55022 Class B Conducted Average dBuV
Figure 45. EMC signature using recommended filter
For further information on designing for EMC
compliance, please refer to the FLTR100V10 data sheet
(FDS01-043EPS).
Layout Considerations
Copper paths must not be routed beneath the power
module mounting inserts. Recommended SMT layout
shown in the mechanical section are for reference only.
SMT layout depends on the end PCB configuration and
the location of the load. For additional layout guide-lines,
refer to FLTR100V10 data sheet or contact your local
Tyco Power field application engineer.
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 17
Mechanical Outline for EQW 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.)
Top View
Side View
Bottom View
Pin Function
1 VI(+)
2 On/Off
3 VI(-)
4 Vo(-)
5 Sense(-)
6 Trim
7 Sense(+)
8 Vo(+)
Note: Location of pins are from true position
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
18 Tyco Electronics Power Systems
Mechanical Outline for EQW 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.)
Top View
Side View
Bottom View
Pin Function
1 VI(+)
2 On/Off
3 VI(-)
4 Vo(-)
5 Sense(-)
6 Trim
7 Sense(+)
8 Vo(+)
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 19
Recommended Pad Layout for Surface-Mount Modules
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.)
Low Current
High Current
0
1.
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
20 Tyco Electronics Power Systems
Recommended Pad Layout for Through-Hole Modules
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.)
Component
side view
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 21
Surface Mount Information
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 69. The tray has
external dimensions of 136mm (W) x 322.6mm (L) x
17.2mm (H) or 5.35in (W) x 12.7in (L) x 0.68in (H).
Figure 46. Surface Mount Packaging Tray
Tray Specification
Material Antistatic coated PVC
Max temperature 65oC
Max surface resistivity 1012Ω/sq
Colour Clear
Capacity 12 power modules
Min order quantity 36 pcs (1box of 3 full trays)
Each tray contains a total of 12 power modules. The
trays are self-stacking and each shipping box will
contain 3 full trays plus one empty hold down tray
giving a total number of 36 power modules.
Pick and Place
The SMT versions of the EQW series of DC-to-DC
power converters use an open-frame construction and
are designed for surface mount assembly within a
fully automated manufacturing process.
The EQW-S series modules are fitted with a label
designed to provide a large flat surface for pick and
placing. The label is located covering the center of
gravity of the power module. The label meets all the
requirements for surface-mount processing, as well as
meeting UL safety agency standards. The label will
withstand reflow temperatures up to 300°C. The label
also carries product information such as product code,
date and location of manufacture.
Note: All dimensions in mm [inches].
Figure 47. Pick and Place Location
Z Plane Height
The ‘Z’ plane height of the pick and place label is 9.15
mm (0.360 in) nominal with an RSS tolerance of +/-
0.25 mm.
Nozzle Recommendations
The module weight has been kept to a minimum by
using open frame construction. Even so, they have a
relatively large mass when compared with
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.
For further information please contact your local Tyco
Electronics Power Systems Technical Sales
Representative.
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
22 Tyco Electronics Power Systems
Surface Mount Information (cont)
Reflow Soldering Information
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.
The surface mountable modules in the EQW family
use our newest SMT technology called “Column Pin”
(CP) connectors. Figure 48 shows the new CP
connector before and after reflow soldering onto the
end-board assembly.
EQW Board
Insulator
Solder Ball
End assembly PCB
Figure 48. 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 (Sn/Pb-63/37) solder. 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, 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. 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
Co o ling
zo ne
1- 4
o
Cs
-1
T
lim
above
205
o
C
REFLOW TIME (S)
Figure 49. Recommended Reflow Profile
MAX TEMP SOLDER (°C)
200
205
210
215
220
225
230
235
240
0 102030405060
TIME LIMIT (S)
Figure 50. Time Limit Curve Above 205oC Reflow
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 Tyco Electronics Board
Mounted Power Modules: Soldering and Cleaning
Application Note (AP01-056EPS).
Data Sheet
October 8, 2004
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75
V
dc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Tyco Electronics Power Systems 23
Ordering Information
Please contact your Tyco Electronics’ Sales Representative for pricing, availability and optional features.
Table 1. Device Codes
Product codes Input Voltage Output
Voltage(s) Output Current Efficiency Connector Type Comcodes
EQW025A0S1R01 48V (36-75Vdc) 1.0 V 25 A 80.0 % Through hole 108980863
EQW025A0P1 48V (36-75Vdc) 1.2 V 25 A 81.0 % Through hole 108981960
EQW025A0M1 48V (36-75Vdc) 1.5 V 25 A 81.0 % Through hole 108980632
EQW025A0Y1 48V (36-75Vdc) 1.8 V 25 A 84.0 % Through hole 108981978
EQW023A0G1 48V (36-75Vdc) 2.5V 23 A 87.0 % Through hole 108980624
EQW020A0F1 48V (36-75Vdc) 3.3 V 20 A 89.0 % Through hole 108981952
EQW012A0A1 48V (36-75Vdc) 5.0 V 12 A 91.0 % Through hole 108984444
EQW025A0S1R01-S 48V (36-75Vdc) 1.0 V 25 A 80.0 % SMT 108980996
EQW025A0P1-S 48V (36-75Vdc) 1.2 V 25 A 81.0 % SMT 108980970
EQW025A0M1-S 48V (36-75Vdc) 1.5 V 25 A 81.0 % SMT 108980723
EQW025A0Y1-S 48V (36-75Vdc) 1.8 V 25 A 84.0 % SMT 108980947
EQW023A0G1-S 48V (36-75Vdc) 2.5V 23 A 87.0 % SMT 108980921
EQW020A0F1-S 48V (36-75Vdc) 3.3 V 20 A 89.0 % SMT 108980905
EQW012A0A1-S 48V (36-75Vdc) 5.0 V 12 A 91.0 % SMT 108980889
Table 2. Device Options
Option* Suffix**
Negative remote on/off logic 1
Surface mount connections -S
Approved for Basic Insulation -B
Short Pins: 3.68 mm ± 0.25mm (0.145 in ±0.010 in) 6
* Please contact Tyco Electronics Sales Representative for availability of these options, samples, minimum order quantity and lead times
** When adding multiple options to the product code, add suffix numbers in the descending order
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc In
p
ut; 1.0Vdc to 5Vdc Out
p
ut; 12A to 25A Out
p
ut
Data Sheet
October 8, 2004
World Wide Headquarters
Tyco Electronics Power Systems, Inc.
3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-526-7819
(Outside U.S.A.: +1-972-284-2626
www.tycopower.com
e-mail: techsupport1@tycoelectronics.com
Europe, Middle-East and Africa Headquarters
Tyco Electronics (UK) Ltd
Tel: +44 (0) 1344 469 300
Latin America, Brazil, Caribbean Headquarters
Tyco Electronics Power Systems
Tel: +56 2 209 8211
Asia Pacific Region
Tyco Electronics Systems india Pte. Ltd.
Tel: +91 80 841 1633 x3001
Asia-Pacific Headquarters
Tyco Electronics Singapore Pte. Ltd.
Tel: +65 6416 4283
Tyco Electronics Corporation reserves the right to make changes to the product(s) or information contained herein without notice. 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.
© 2003 Tyco Electronics Corporation, Harrisburg, PA. All International Rights Reserved.
Document No: DS03-074 ver. 0.9
PDF No: eqw_2-25-ds.pdf
