SQE48T20050 DC-DC Converter Data Sheet
36-75 VDC Input; 5.0 VDC @ 20 A Output
Electrical Specifications
Conditions: T A = 25 oC, Airflow=300 LFM (1.5 m/s), Vin = 48 VDC, unless otherwise specified.
Parameter
Notes
Min
Typ
Max
Units
Absolute Maximum Ratings
Input Voltage
Operating Ambient Temperature
Storage Temperature
Continuous
0
-40
-55
80
85
125
VDC
°C
°C
Input Characteristics
Operating Input Voltage Range
36
48
75
VDC
Input Under Voltage Lockout
Non-latching
Turn-on Threshold
Turn-off Threshold
Input Voltage Transient
100 ms
33
31
34
32
35
33
100
VDC
VDC
VDC
Isolation Characteristics
I/O Isolation
Isolation Capacitance
Isolation Resistance
Feature Characteristics
Switching Frequency
See note *
See note *
2250
1500
10
190
1200
460
VDC
VDC
pF
pF
M ?
kHz
Output Voltage Trim Range 1
Remote Sense Compensation 1
Industry-std. equations
Percent of V OUT ( NOM )
-20
+10
+10
%
%
Output Overvoltage Protection
Overtemperature Shutdown (PCB)
Peak Back-drive Output Current
(Sinking current from external source)
during startup into pre-biased output
Latching or Non-latching
Non-latching*
Non-latching
Peak amplitude
Peak duration
117
120
122
125
125
1
50
127
130
%
%
°C
ADC
μs
Back-drive Output Current (Sinking Current
Converter Off;
from external source)
Auto-Restart Period (For non-latching option)
Turn-On Time
external voltage 5 VDC
Applies to all protection features
10
200
4
30
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 up to 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.
For models with the special feature “K”.
JUL 07, 2006 revised to APR 12, 2007
Page 2 of 16
www.power-one.com
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