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FND850-12DRG Front-End Preliminary Data Sheet
DC Input, 12V Output, 850 Watts
Output Specifications
Parameter
Efficiency
Conditions/Description
Full rated load at Vin = 36 to 75 VDC,
Vout = 12V
Full rated load at Vin = 36 to 75 VDC,
Vout = 7V
Min.
84
80
Nom.
88
82
Max.
Units
%
Minimum Load
Output Current
Nominal Output
Power
Overshoot
Minimum loading required to maintain regulation.
Main output: Vin = 36 to 44 VDC
Main output: Vin = 44 to 75 VDC
12V output, Vin = 36 to 44 VDC
12V output, Vin = 44 to 75 VDC
Standby output Vin = 36 to 75 VDC
Output voltage overshoot at turn-on.
0
58
71
700
850
12
3
A
A rms
W
%
Maximum recovery time and deviation of initial
set point due to a 50% load change, 1A/μs.
2
4
Transient Response
Maximum recovery time: 12V output
Maximum deviation: 12V output
Maximum recovery time and deviation of initial
set point due to a 100% load change, 1A/μs.
Maximum recovery time: 12V output
Maximum deviation: 12V output
1200
1
2
1
μs
%
ms
%
Turn-On Delay
Output Regulation
Time required for initial output voltage
stabilization after application of DC input.
See Model Selection table on page 1.
2
Sec
1
Percentage value is based upon nominal output voltage. Does not include the voltage droop of 10 mV/1A (720 mV/71A)
MCD10096 Rev. 1.6, 23-Jul-10
Page 2 of 11
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