GE
Datasheet
ESTW025A0F Series (Eighth Brick) DC-DC Converter Power Modules
36-75Vdc Input; 3.3Vdc, 25A
Features
STINGRAY™ SERIES
RoHS Compliant
Applications
▪
Wide input voltage range: 36-75 Vdc
▪
Delivers up to 25A Output current
▪
Monotonic startup into prebiased load
▪
Output Voltage adjust: 80% to 110% of Vo,nom
▪
Remote sense
▪
Constant switching frequency
▪
Positive remote On/Off logic
▪
Input under voltage protection
▪
Output overcurrent and overvoltage protection
▪
Over-temperature protection
▪
Industry standard, DOSA compliant footprint
57.9mm x 22.8mm x 8.5mm
▪
Distributed power architectures
▪
Wireless networks
▪
Low profile height and reduced component skyline
▪
Access and optical network Equipment
▪
▪
Enterprise Networks including Power over Ethernet (PoE)
Suitable for cold wall cooling using suitable Gap Pad
applied directly to top side of module
▪
▪
High efficiency 92% at full load (Vin=48Vdc)
Latest generation IC’s (DSP, FPGA, ASIC) and
Microprocessor powered applications
▪
No thermal derating up to 68°C, 1.0m/s (200 LFM)
▪
Wide operating temperature range (-40°C to 85°C)
▪
Compliant to RoHS Directive 2011/65/EU and amended
Directive (EU) 2015/863 (-Z versions)
▪
Compliant to REACH Directive (EC) No 1907/2006
▪
ANSI/UL* 62368-1 and CAN/CSA† C22.2 No. 62368-1
Recognized, DIN VDE‡ 0868-1/A11:2017 (EN623681:2014/A11:2017)
▪
CE mark meets 2014/35/EU directive§
▪
Meets the voltage and current requirements for ETSI
300-132-2 and complies with and licensed for Basic
insulation rating
▪
2250 Vdc Isolation tested in compliance with IEEE 802.3¤
PoE standards
▪
ISO**9001 and ISO 14001 certified manufacturing
facilities
(2.28 in x 0.9 in x 0.335 in)
Options
▪
Negative Remote On/Off logic (-1 option,
preferred/standard)
▪
Auto-restart (-4 option, preferred/standard)
▪
Trimmed leads (-6 or -8 options)
Description
The ESTW025A0F 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 (Vin = 36 -75Vdc). The
module achieves typical full load efficiency of 92% at 3.3Vdc output voltage. The open frame modules construction, available in
through-hole packaging, enables designers to develop cost- and space-efficient solutions.
* 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 of the required procedures of end-use equipment should be followed.
¤ IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated.
** ISO is a registered trademark of the International Organization of Standards
‡
April 23, 2021
©2014 General Electric Company. All rights reserved.
Page 1
GE
Datasheet
ESTW025A0F Series: Eighth-Brick Power Modules
36 to 75Vdc Input; 3.3Vdc, 25A
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, operational (≤100 ms)
All
VIN,trans
-0.3
100
Vdc
Operating Ambient Temperature
All
TA
-40
85
°C
Storage Temperature
All
Tstg
-55
125
°C
I/O Isolation voltage (100% factory Hi-Pot tested)
All
⎯
⎯
2250
Vdc
(see Thermal Considerations section)
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter
Device
Symbol
Min
Typ
Max
Unit
All
VIN
36
48
75
Vdc
All
IIN,max
2.7
Adc
All
IIN,No load
50
All
IIN,stand-by
6
Inrush Transient
All
I2t
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
30
Input Ripple Rejection (120Hz)
All
50
Operating Input Voltage
Maximum Input Current
(VIN= VIN, min to VIN, max, IO=IO, max)
Input No Load Current
(VIN = VIN, nom, IO = 0, module enabled)
Input Stand-by Current
(VIN = VIN, nom, module disabled)
mA
8
mA
1
A2s
mApp
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 fast-acting fuse with a maximum rating of 5 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.
April 23, 2021
©2014 General Electric Company. All rights reserved.
Page 2
GE
Datasheet
ESTW025A0F Series: Eighth-Brick Power Modules
36 to 75Vdc Input; 3.3Vdc, 25A
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
All
VO, set
3.250
3.300
3.350
Vdc
All
VO
3.200
⎯
3.400
Vdc
All
All
All
⎯
⎯
⎯
⎯
⎯
±0.2
±0.1
10
% VO, set
mV
% VO, set
All
⎯
8
20
mVrms
All
⎯
40
75
mVpk-pk
Nominal Output Voltage Set-point
VIN=VIN, nom, IO=IO, max, TA=25°C)
Output Voltage
(Over all operating input voltage, resistive load, and
temperature conditions until end of life)
Output Regulation
Line (VIN=VIN, min to VIN, max)
Load (IO=IO, min to IO, max)
Temperature (Tref=TA, min to TA, max)
Output Ripple and Noise on nominal output
(Co=1uF,ceramic+10uF,tantalum, VIN=VIN, nom ,IO= IO, max ,
TA=TA, min to TA, max)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance 1
All
CO, max
0
⎯
20,000
μF
Output Current
Output Current Limit Inception (Hiccup Mode )
(VO= 90% of VO, set)
Output Short-Circuit Current (VO≤250mV)
( Hiccup Mode)
All
Io
0
⎯
25.0
Adc
All
IO, lim
26.3
29
32.5
Adc
All
IO, s/c
VIN= VIN, nom, TA=25°C, IO=IO, max , VO= VO,set
VIN= VIN, nom, TA=25°C, IO=10A , VO= VO,set
All
All
η
η
VIN= VIN, nom, TA=25°C, IO=5A , VO= VO,set
All
η
All
fsw
Peak Deviation
All
Vpk
⎯
127
⎯
mV
Settling Time (Vo1 second and then the
On/Off input is set to ON (Tdelay = time from instant On/Off
signal is ON until VO = 10% of VO, set)
Case 2: On/Off input is set to Logic Low (Module
ON) and then input power is applied (Tdelay = time
at which VIN = VIN, min 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 – Startup
IO= IO, max; VIN=VIN, min to VIN, max, TA = 25 oC
All
Prebias Output Load Performance:
1.
2.
Output Start up characteristic
All
Back Bias current drawn from output (Module Enabled)
All
Remote Sense Range
All
Output Voltage Adjustment Range
All
Output Overvoltage Protection (CO=470μF)2
All
Overtemperature Protection – Hiccup Auto Restart
Input Undervoltage Lockout
Monotonic
mAdc
-15
VSENSE
10
% VO, set
-20
+10
% VO, set
VO, limit
3.9
5.1
Vdc
All
Tref
⎯
125
⎯
OC
All
VUVLO
Turn-on Threshold
⎯
34.0
35.5
Vdc
Turn-off Threshold
30.5
32.0
⎯
Vdc
Hysteresis
1.0
2.0
⎯
Vdc
The module has an adaptable extended Turn-On Delay interval, Tdelay, of 25mS. The extended Tdelay will occur when the module restarts following the rapid cycling of Vin
from normal levels to less than the Input Undervoltage Lockout (which causes module shutdown), and then back to normal.
The module requires a minimum of 470 μF external output capacitor to prevent shutdown during full load to no load transients and to avoid exceeding the OVP maximum
limits during startup into open loop fault conditions.
April 23, 2021
©2014 General Electric Company. All rights reserved.
Page 4
GE
Datasheet
ESTW025A0F Series: Eighth-Brick Power Modules
36 to 75Vdc Input; 3.3Vdc, 25A
Characteristic Curves
VO (V) (200mV/div)
Io(A) (5A/div)
EFFICIENCY, (%)
OUTPUT CURRENT OUTPUT VOLTAGE
The following figures provide typical characteristics for the ESTW025A0F (3.3V, 25A) at 25oC. The figures are identical for either positive
or negative remote On/Off logic.
OUTPUT CURRENT, IO (A)
TIME, t (200µs/div)
Figure 4. Transient Response to 0.1A/µS Dynamic Load
Change from 50% to 75% to 50% of full load.
OUTPUT VOLTAGE
VO (V) (1V/div)
On/Off VOLTAGE
VOn/off (V) (5V/div)
VO (V) (20mV/div)
OUTPUT VOLTAGE
Figure 1. Converter Efficiency versus Output Current.
TIME, t (10ms/div)
TIME, t (2s/div)
OUTPUT VOLTAGE
Vo (V) (1V/div)
VIN (V) (20V/div
Figure 5. Typical Start-up Using Remote On/Off, negative logic
version shown (VIN = VIN,NOM, Io = Io,max).
INPUT VOLTAGE
VO (V) (200mV/div)
Io(A) (5A/div)
OUTPUT CURRENT OUTPUT VOLTAGE
Figure 2. Typical output ripple and noise (VIN = VIN,NOM, Io =
Io,max).
TIME, t (200µs/div)
TIME, t (5ms/div)
Figure 3. Transient Response to 0.1A/µS Dynamic Load
Change from 25% to 50% to 25% of full load.
April 23, 2021
Figure 6. Typical Start-up Using Input Voltage (VIN = VIN,NOM, Io
= Io,max).
©2014 General Electric Company. All rights reserved.
Page 5
GE
Datasheet
ESTW025A0F Series: Eighth-Brick Power Modules
36 to 75Vdc Input; 3.3Vdc, 25A
Test Configurations
Design Considerations
Input Filtering
CURRENT PROBE
TO OSCILLOSCOPE
LTEST
Vin+
BATTERY
12μH
CS
220μF
100μF
E.S.R.