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SQE48T20120 DC-DC Converter Data Sheet
36-75 VDC Input; 12 VDC @ 20A Output
Electrical Specifications
Conditions: T A = 25 oC, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Cin=100 μF, unless otherwise specified.
Parameter
Notes
Min
Typ
Max
Units
Absolute Maximum Ratings
Input Voltage
Continuous
Transient (100ms)
-0.3
80
100
VDC
VDC
Operating Temperature
Storage Temperature
(See Derating Curves)
(Note: 1)
Ambient (T A )
Component (T C )
Baseplate (T B )
-40
-40
-40
-55
85
125
105
125
°C
°C
°C
°C
Isolation Characteristics
I/O Isolation
2,250
VDC
Isolation Capacitance
Isolation Resistance
I/O Isolation
w/o In/Out capacitor
(suffix ‘-xxx 0 x’)
10
1,500
200
pF
M ?
VDC
Isolation Capacitance
with In/Out capacitor
(suffix ‘-xxx K x’)
1,200
1,500
pF
Isolation Resistance
10
M ?
Input to Baseplate
Output to Baseplate
w/o In/Out capacitor
(suffix ‘-xxx B x’)
1,500
1,500
VDC
VDC
Feature Characteristics
Switching Frequency
450
kHz
Output Voltage Trim Range
2
n/a
%
Remote Sense Compensation
2
n/a
%
Output Overvoltage Protection
(Non-latching)
110
120
130
%
Over Temperature Shutdown
(Non-latching)
(Note: 1)
Component (T C )
130
°C
Auto-Restart Period
Turn-On Time from Vin
Turn-On Time from ON/OFF Control
Applies to all protection features
Time from UVLO to Vo=90%V OUT ( NOM )
Resistive load
Time from ON to Vo=90%V OUT ( NOM )
Resistive load
300
10
10
ms
ms
ms
Turn-On Time from Vin
(w/ Co max.)
Time from UVLO to Vo=90%V OUT ( NOM )
Resistive load, C EXT =10,000μF load
12
ms
Turn-On Time from ON/OFF Control
(w/ Co max.)
Time from ON to Vo=90%V OUT ( NOM )
Resistive load, C EXT =10,000μF load
12
ms
ON/OFF Control (Positive Logic)
ON/OFF Control (Negative Logic)
Converter Off (logic low)
Converter On (logic high)
Converter Off (logic low)
Converter On (logic high)
-20
2.4
2.4
-20
0.8
20
20
0.8
VDC
VDC
VDC
VDC
Additional Notes:
1
2
Reference Figure E for component (T C and T B ) locations.
This functionality not provided, however the unit is fully regulated.
MCD10157 Rev. 1.5, 03-Mar-11
www.power-one.com
Page 2 of 13
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