Data Sheet
January 8, 2008
EQW012/020/023/025 Series Eighth-Brick DC-DC Converters:
36- 75Vdc Input;1.2Vdc to 5Vdc Output ;12A to 25A Output Current
RoHS Compliant
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
Delivers up to 25A Output current
High efficiency – 89% at 3.3V full load (Vin = 48Vdc)
Low output ripple and noise
Surface mount or through hole
Industry standard Eight brick footprint
57.9mm x 22.8mm x
8.52mm
(2.28in x 0.9in x 0.335in)
Constant switching frequency
Applications
Distributed power architectures
Wireless Networks
Enterprise Networks
Optical and Access Network Equipment
Latest generation IC’s (DSP, FPGA, ASIC) and
Microprocessor powered applications.
Remote On/Off Positive logic (primary referenced)
Remote Sense
Adjustable output voltage (± 10%)
Output overvoltage and overcurrent protection
Input undervoltage lockout
Output overcurrent and overvoltage protection
Over-temperature protection
Wide operating temperature range (-40°C to 85°C)
UL*
60950-1 Recognized,
CSA
†
C22.2 No. 60950-1-
03 Certified, and
VDE
‡
0805 (IEC60950, 3
rd
edition)
Licensed
ISO** 9001 and ISO14001 certified manufacturing
facilities
Meets the voltage and current requirements for
ETSI 300-132-2 and complies with and licensed for
rd
Basic insulation rating per IEC60950 3 edition
Options
Remote On/Off logic (positive or negative)
Surface Mount (-S Suffix)
Short pins
Alternative output voltage adjustment equations
(1.2V output only, -V Suffix)
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, overvoltage, overcurrent and
overtemperature protection.
*
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.
** ISO is a registered trademark of the International Organization of Standards
Document No: DS03-74 ver. 1.19
PDF name: eqw_12-25-ds.pdf
Data Sheet
January 8, 2008
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc Input; 1.2Vdc to 5Vdc Output; 12A to 25A Output
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
Input Voltage
Continuous
Transient (100ms)
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
I/O Isolation Voltage (100% factory Hi-Pot tested)
All
All
T
stg
⎯
-55
⎯
125
1500
°C
V
dc
EQW
All
V
IN, trans
T
A
-0.3
-40
100
85
V
dc
°C
Device
EQW
Symbol
V
IN
Min
-0.3
Max
80
Unit
V
dc
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Maximum Input Current
(V
IN
=0V to 75V, I
O
=I
O, max
)
Input No Load Current
(Vin = 48Vdc, Io = 0, module enabled)
Input Stand-by Current
(Vin = 48Vdc, module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; V
IN
=0V
to 75V, I
O
= I
Omax
; see Test Configuration section)
Input Ripple Rejection (120Hz)
EMC, EN55022
All
All
All
It
13
50
See EMC Considerations section
2
Device
All
All
All
Symbol
V
IN
I
IN,max
I
IN,No load
I
IN,stand-by
Min
36
Typ
48
Max
75
3
Unit
V
dc
A
dc
mA
75
All
3
mA
1
As
mA
p-p
dB
2
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.
Tyco Electronics Power Systems
2
Data Sheet
January 8, 2008
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc Input; 1.2Vdc to 5Vdc Output; 12A to 25A Output
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=V
IN,nom
, I
O
=I
O, max
, T
ref
=25°C)
Device
1.2 Vdc
1.5 Vdc
1.8 Vdc
2.5V dc
3.3 Vdc
5.0 Vdc
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
1.2 Vdc
1.5 Vdc
1.8 Vdc
2.5V dc
3.3 Vdc
5.0 Vdc
Adjustment Range
Selected by external resistor
1.8Vdc
2.5Vdc
3.3Vdc
All others
Output Regulation
Line (V
IN
=V
IN, min
to V
IN, max
)
Load (I
O
=I
O, min
to I
O, max
)
Temperature (T
ref
=T
A, min
to T
A, max
)
Output Ripple and Noise on nominal output
measured with 10μF Tantalum, 1μF ceramic
(V
IN
=V
IN, nom
and I
O
=I
O, min
to I
O, max
)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance*
5.0 Vdc
5.0 Vdc
All others
All others
5.0 Vdc
All others
Output Current
1.2 Vdc
1.5 Vdc
1.8 Vdc
2.5V dc
3.3 Vdc
5.0 Vdc
Output Current Limit Inception
(Vo = 90% of V
O, set
)
1.2 Vdc
1.5 Vdc
1.8 Vdc
2.5V dc
3.3 Vdc
5.0 Vdc
C
O, max
C
O, max
I
o
I
o
I
o
I
o
I
o
I
o
I
O, lim
I
O, lim
I
O, lim
I
O, lim
I
O, lim
I
O, lim
⎯
⎯
⎯
⎯
0
0
0
0
0
0
0
0
⎯
⎯
⎯
⎯
⎯
⎯
18
50
8
40
⎯
⎯
―
―
―
―
―
―
35
35
35
30
25
15
35
90
20
75
3000
5000
25.0
25.0
25.0
23.0
20.0
12.0
⎯
⎯
⎯
⎯
⎯
⎯
mV
rms
mV
pk-pk
mV
rms
mV
pk-pk
μF
μF
A
dc
A
dc
A
dc
A
dc
A
dc
A
dc
A
dc
A
dc
A
dc
A
dc
A
dc
A
dc
All
All
All
⎯
⎯
⎯
⎯
⎯
0.2
0.1
10
⎯
% V
O, set
mV
% V
O, set
Symbol
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
V
O
V
O
V
O
V
O
V
O
V
O
V
O
V
O
V
O
V
O
Min
1.18
1.47
1.76
2.45
3.25
4.90
1.16
1.45
1.74
2.42
3.2
4.85
-10
-10
-20
-10.0
Typ
1.2
1.5
1.8
2.5
3.3
5.0
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Max
1.22
1.53
1.84
2.55
3.35
5.10
1.24
1.55
1.86
2.57
3.4
5.15
+12
+20
+10
+10
Unit
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
% V
O, set
% V
O, set
% V
O, set
% V
O, set
Tyco Electronics Power Systems
3
Data Sheet
January 8, 2008
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc Input; 1.2Vdc to 5Vdc Output; 12A to 25A Output
Electrical Specifications
(continued)
Parameter
Output Short-circuit Current
(Vo = 0.25V)
Device
1.2 Vdc
1.5 Vdc
1.8 Vdc
2.5V dc
3.3 Vdc
5.0 Vdc
Efficiency
V
IN
=V
IN, nom
, T
A
=25°C
I
O
=I
O, max ,
V
O
= V
O,set
1.2 Vdc
1.5 Vdc
1.8 Vdc
2.5V dc
3.3 Vdc
5.0 Vdc
Switching Frequency
Dynamic Load Response
(ΔIo/Δt=0.1A/μs; V
in
=V
in
,set; T
A
=25°C)
Load Change from Io= 50% to 75% of Io,max;
10μF Tantalum, 1μF ceramic external capacitance
Peak Deviation
Settling Time (Vo<10% peak deviation)
(ΔIo/Δt=0.1A/μs; V
in
=V
in
,set; T
A
=25°C)
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
V
pk
⎯
200
⎯
mV
All
Symbol
Min
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Typ
Max
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Unit
A
dc
A
dc
A
dc
A
dc
A
dc
A
dc
%
%
%
%
%
%
kHz
I
o,sc
I
o,sc
I
o,sc
I
o,sc
I
o,sc
I
o,sc
η
η
η
η
η
η
f
sw
42
42
42
40
37
25
81.0
81.0
84.0
87.0
89.0
91.0
285
All
All
t
s
V
pk
⎯
⎯
200
200
⎯
⎯
μs
mV
All
t
s
⎯
200
⎯
μs
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Symbol
C
ISO
R
ISO
Min
⎯
10
Typ
1000
⎯
Max
⎯
⎯
Unit
pF
MΩ
General Specifications
Parameter
Calculated Reliability Based upon Telcordia SR-
332 Issue 2: Method
I,
Case 1, (I
O
=80%I
O, max
,
T
A
=40°C, Airflow = 200 lfm), 90% confidence
Weight
Device
MTBF
FIT
F-S
F-S
⎯
Min
Typ
3,287,361
304
15.2 (0.6)
⎯
Max
Unit
Hours
10 /Hours
g (oz.)
9
Tyco Electronics Power Systems
4
Data Sheet
January 8, 2008
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc Input; 1.2Vdc to 5Vdc Output; 12A to 25A Output
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
Remote On/Off Signal Interface
(V
IN
=V
IN, min
to V
IN, max
; open collector or equivalent,
Signal referenced to V
IN-
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
On/Off Voltage:
Logic Low
Logic High – (Typ = Open Collector)
Logic High maximum allowable leakage current
Turn-On Delay and Rise Times
(VI =48Vdc, I
O
=I
O, max ,
V
O
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)
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)
Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set)
Output voltage overshoot
(Io = 80% of Io,max, VI = 48Vdc T
A
=25°C)
Output Voltage Remote Sense
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
I
on/off
V
on/off
V
on/off
I
on/off
⎯
-0.7
⎯
⎯
0.15
⎯
⎯
⎯
1.0
1.2
15
10
mA
V
V
μA
All
Tdelay
20
msec
All
Tdelay
12
msec
All
All
1.2, 1.5,
1.8Vdc
2.5, 3.3,
5.0 Vdc
Trise
―
―
―
―
0.9
―
―
―
2.0
2.3
2.3
3.1
4.0
6.1
125
―
5
0.25
10
2.8
3.2
3.2
3.7
4.6
7.0
⎯
msec
%V
O, set
Vdc
%V
O, set
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
°C
Output Overvoltage Protectionn (Clamp)
1.2 Vdc
1.5 Vdc
1.8 Vdc
2.5V dc
3.3 Vdc
5.0 Vdc
V
O, limit
V
O, limit
V
O, limit
V
O, limit
V
O, limit
V
O, limit
T
ref
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Overtemperature Protection
(See thermal section)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
All
All
All
―
25
32
27
36
―
V
dc
V
dc
Tyco Electronics Power Systems
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