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参数资料
| 型号： | FND850-12RG |
| 厂商： | Power-One |
| 文件页数： | 3/11页 |
| 文件大小： | 0K |
| 描述： | FRONT END DC/DC 850W 12V |
| 标准包装： | 2 |
| 系列： | * |
FND850-12RG Front-End Preliminary Data Sheet
DC Input, 12V Output, 850 Watts
Interface Signals and Internal Protection
Parameter
Conditions/Description
Min.
Nom.
Max.
Units
Latch-style overvoltage protection.
Overvoltage Protection
Output adjusted to 12V:
Output adjusted to 7V:
14.36
8.8
15.65
9.2
V
Current limit.
12V output (Vin = 44 to 75V)
74
78
85
Overcurrent Protection
12V output (Vin = 36 to 44V)
61
64
70
A
Short-Circuit
Protection
Overtemperature/
Fan Failure Warning
Standby output:
Power supply to recover when short is removed.
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 will indicate
FF
TTL open-collector signal with active 20-mA
pull-down. Represents percent of output voltage
2.2
4
DC OK
where signal is OK. Below this voltage, a signal
high condition indicates an output which is out
90
110
%
of tolerance. Green DC OK LED on front panel
indicates normal operation. 1
TTL open-collector signal with active 20-mA
pull-down. High indicates an input power fail.
Input Power Fail
Warning
Power Fail Warning will turn OFF green INPUT
OK LED. Represents the time after warning
4
ms
input power.
signal before Vout drops to 95% due to loss of
1
Power Supply Present
Signal
Current Share
Remote Sense
Resistance of connection to logic ground which
allows user to determine if power supply is
present. 1
Main output only. Difference in current between
two supplies (I Δ < 5% Isum_nom)
Total voltage compensation for cable losses
with respect to the main output.
10
7.1
0.5
?
A
V
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
Output Enable
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).
Also available on I C data line.
1
2
MCD10060 Rev. 1.8, 23-Jul-10
Page 3 of 11
www.power-one.com
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