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SQE48T40025 DC-DC Converter Data Sheet
36-75 VDC Input; 2.5 VDC @ 40A Output
Electrical Specifications
Conditions: T A = 25 oC, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Cin=33 μF, unless otherwise specified.
Parameter
Notes
Min
Typ
Max
Units
Absolute Maximum Ratings
Input Voltage
Continuous
-0.3
80
VDC
Operating Ambient Temperature
Operating Altitude
Iout = 40A
-40
85
3000
°C
m
Storage Temperature
Iout ≤ 32 A
3001
-55
10000
125
m
°C
Isolation Characteristics
Standard Product: Option 0 (refer to Converter Part Numbering/Ordering Information)
I/O Isolation
Isolation Capacitance
Isolation Resistance
Option K (refer to Converter Part Numbering/Ordering Information)
I/O Isolation
2250
10
1500
160
VDC
pF
M ?
VDC
Isolation Capacitance
Isolation Resistance
10
200
1500
pF
M ?
Feature Characteristics
Switching Frequency
440
kHz
Output Voltage Trim Range
1
Industry-std. equations
-20
+10
%
Remote Sense Compensation
1
Percent of V OUT ( NOM )
+10
%
Output Overvoltage Protection
Non-latching
117
122
130
%
Overtemperature Shutdown (PCB)
Operating Humidity
Storage Humidity
Peak Back-drive Output Current
(Sinking current from external source)
during startup into pre-biased output
Non-latching
Non-condensing
Non-condensing
Peak amplitude
Peak duration
1
50
125
95
95
°C
%
%
ADC
μs
Back-drive Output Current (Sinking Current
from external source)
Auto-Restart Period
Turn-On Time
Converter OFF;
external voltage 5 VDC
Applies to all protection features
See Figures E, F, and G
10
200
3
50
15
mADC
ms
ms
ON/OFF Control (Positive Logic)
Converter Off (logic low)
Converter On (logic high)
-20
2.4
0.8
20
VDC
VDC
ON/OFF Control (Negative Logic)
Converter Off (logic high)
Converter On (logic low)
2.4
-20
20
0.8
VDC
VDC
Additional Notes:
1
Vout can be increased up to 10% via the sense leads or 10% via the trim function. However, the total output voltage trim from all sources
should not exceed 10% of V OUT ( NOM ), in order to ensure specified operation of overvoltage protection circuitry.
ZD-01723 Rev 1.2, 04-Jan-10
www.power-one.com
Page 2 of 13
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