QM48T50012 DC-DC Converter Data Sheet
36-75 VDC Input; 1.2 VDC @ 50A Output
Electrical Specifications
Conditions: TA=25ºC, Airflow=300 LFM (1.5 m/s), Vin=48 Vdc, All output voltages, 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
Input Under Voltage Lockout
Turn-on Threshold
Turn-off Threshold
Input Voltage Transient
36
48
75
Vdc
Non-latching
100 ms
33
31
34
32
35
33
100
Vdc
Vdc
Vdc
ISOLATION CHARACTERISTICS
I/O Isolation
Isolation Capacitance
2000
10
Vdc
nF
MΩ
1.4
Isolation Resistance
FEATURE CHARACTERISTICS
Switching Frequency
415
kHz
%
%
Output Voltage Trim Range1
Remote Sense Compensation1
Output Over-Voltage Protection
Auto-Restart Period
See trim equations on Page 4
Percent of VOUT(NOM)
-10
+10
+10
140
Non-latching
Applies to all protection features
117
128
100
4
%
ms
ms
Turn-On Time
ON/OFF Control (Positive Logic)
Converter Off
-20
2.4
0.8
20
Vdc
Vdc
Converter On
ON/OFF Control (Negative Logic)
Converter Off
2.4
-20
20
0.8
Vdc
Vdc
Converter On
Additional Notes:
1. Vout can be increased up to 10% via the sense leads or up to 10% via the trim function, however total output voltage trim from all sources
should not exceed 10% of VOUT(NOM), in order to insure specified operation of over-voltage protection circuitry.
MAY 14, 2004 revised to NOV 13, 2006
Page 2 of 13
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