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參數資料
| 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： | 1/11頁 |
| 文件大小： | 825K |
| 代理商： | FND850-12DRG |
MCD10096 Rev. 1.6, 23-Jul-10
Page 1 of 11
www.power-one.com
FND850-12DRG Front-End Preliminary Data Sheet
DC Input, 12V Output, 850 Watts
Applications
Telecom, datacom, and distributed power
systems
Features
RoHS compliant for all six substances
Universal input voltage range (36-75 VDC)
High power density, 15.15 Watts/cubic inch
1U or 2U height configurations
Droop current share with ORing FETs
I
2C interface status and control
External standby voltage of 12 VDC @ 1 A
Overtemperature, overload, and overvoltage
protection
Status LEDs: INPUT OK, OUTPUT OK,
Overtemperature
Airflow direction from rear-to-front
Description
The FND850-12DRG DC-DC front-end provides a 12 VDC output for telecom, datacom, and other distributed
power applications. The FND850-12DRG small 1U by 2U size allows for configurations of either height in hot-
swap redundant systems while its internal fan and cooling design permits wide use with reliable operation.
Status is provided with front panel LEDs, logic signals, and via the I
2C management interface bus. In addition,
the I
2C bus can enable the power supply, control fan speed, and adjust the output voltage from 7 to 12 VDC.
This powerful feature allows the same power supply to be used in various applications.
In addition, the FND850-12DRG is designed with airflow from the rear of the power supply to the front. This
airflow direction supports those critical applications where space limitations and/or higher ambient temperatures
near the rear of the racking system, prohibit the discharge of higher temperature airflow from regular front-to-rear
cooled power supplies.
The FND850-12DRG meets international safety requirements and is CE marked to the Low Voltage Directive
(LVD).
Model Selection
Model
Input
Voltage
(VDC)
Nominal
Output
Voltage
(VDC)
Adjustment
Range
(VDC)
Maximum
Output
Current
(Amps)
Line
Regulation
(%)
1
Load
Regulation
(%)
1, 2
Ripple &
Noise
pk-pk (%)
3
FND850-12DRG
36 to 44
44 to 75
36 to 75
12
12 (Standby)
7 to 12.3
N/A
58
71
1
±0.17
±5
6
±5
1
1 % of Vnom
2 Main 12 V output has built-in droop regulation.
3 Maximum peak-to-peak noise is expressed as a percentage of output voltage; 20 MHz bandwidth.
Input Specifications
Parameter
Conditions/Description
Min.
Nom.
Max.
Units
Input Voltage
DC input voltage
36
75
VDC
Hold-up Time
After DC input is removed at full power
4
5
ms
Input Current
At 100% load (main and standby output) ,
Vin = 36 VDC
23.5
A rms
Inrush Surge Current
Internally limited. Vin = 36 VDC @ 25 C
35
A pk
Internally limited. Vin = 75 VDC @ 25 °C
25
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