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參數(shù)資料
| 型號： | FND850-12DRG |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 12 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT PACKAGE-26 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大小： | 825K |
| 代理商： | FND850-12DRG |
MCD10096 Rev. 1.6, 23-Jul-10
Page 3 of 11
www.power-one.com
FND850-12DRG Front-End Preliminary Data Sheet
DC Input, 12V Output, 850 Watts
Interface Signals and Internal Protection
Parameter
Conditions/Description
Min.
Nom.
Max.
Units
Overvoltage Protection
Latch-style overvoltage protection.
Output adjusted to 12V:
Output adjusted to 7V:
14.36
8.37
15.65
9.13
V
Overcurrent Protection
1
Current limit.
12V output (Vin = 44 to 75V)
12V output (Vin = 36 to 44V)
Standby output:
74
61
1.1
78
64
1.3
85
70
1.5
A
Short-Circuit Protection
Power supply to recover when short is removed.
Overtemperature/
Fan Failure Warning
1
12V output will shut down in the event of an
overtemperature condition or blocked fan rotor.
Supply's fan and Vaux are active. Power
supply will recover when OT condition is
removed. Amber OT LED will turn ON to
indicate fault condition.
OT/Fan Fail is an open-collector signal with
20-mA pull-down. High signal indicates a
normal operating condition. Output will go low
at least 100 ms before OT condition shuts down
the power supply. An amber light indicates fan
failure.
DC OK
1
TTL open-collector signal with active 20-mA
pull-down. Represents percent of nominal set
output voltage where signal is OK. Outside of
this percentage, a signal high condition
indicates an output which is out of tolerance.
Green DC OK LED on front panel indicates
normal operation.
90
110
%
Input Power Fail
Warning
1
TTL open-collector signal with active 20-mA
pull-down. High indicates an input power fail
(outside 36-75 VDC). Power Fail Warning will
turn OFF green INPUT OK LED. Represents
the time after warning signal before Vout drops
to 95% due to loss of input power.
4
ms
Power Supply Present
Signal
1
Resistance of connection to logic ground which
allows user to determine if power supply is
present.
10
Current Share
Main output only. Difference in current between
two supplies (IΔ < 5% Isum - nom)
7.1
A
Remote Sense
Total voltage compensation for cable losses
with respect to the main output.
0.5
V
Output Enable
Open circuit or logic high from ENA pin to Vo1
RTN shuts OFF Vo1; Vaux and fan are
operational. Logic low (2 mA sink capability) or
jumper will turn ON Vo1 within 100 ms. Open
circuit voltage on enable pin is 3.3 VDC.
Externally applied voltage to the enable pin
should NOT exceed 7 VDC. Signal is referred
to as Logic Return (LRTN).
1 Also available on I2C data line.
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