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参数资料
| 型号： | SFD1200-12BG |
| 厂商： | Power-One |
| 文件页数： | 3/8页 |
| 文件大小： | 0K |
| 描述： | FRONT END DC/DC 1200W 12V |
| 标准包装： | 1 |
| 系列： | * |
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
Interface Signals and Internal Protection 1
Parameter
Overvoltage Protection
Conditions/Description
Latch-style overvoltage protection. 12V output:
Min.
Nom.
Max.
15
Units
V
Standby output:
4.3
Overcurrent Protection
Slow Current limit
Overcurrent (Latching Mode).
12V output:
12V output:
104
116
115
130
A
Short-Circuit
Protection
Overtemperature/
Fan Failure Warning
Standby output:
Latching Mode.
12V output will shut down in the event of an
overtemperature condition or blocked fan rotor.
OT setpoint is 55 ±5 oC. 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.
4
6
PS_ON
+12V Current Share
Write Protect
PS A0
SDA
SCL
Tach_1
Input_OK/H
Present/L
PS_Kill
+12V Sense
+12V Rtn Sense
Alert/L
PWROK/H
Output enable. Pulled low allows V1 to be activated.
0 to 8V signal used for active current sharing.
For factory use only.
Sets I 2 C Address. Low = 0, High = 1 Signal has 4.75kohm pull up resistor to 3V
I 2 C Data line (3.3V).
I 2 C Clock line (3.3V).
Pulses per fan revolution; variable in temperature function.
High signal indicates DC input voltage is within PSU limits. Signal is open drain with an internal
1kohm pull up resistor to 3.3Vdc
100 Ohm resistor internally connected to RTN allowing the PSU to be detected on insertion.
Output enable. Pulled low in conjunction with PS_ON being pulled low allows V1 to be activated.
Signal has internal 100kohm pull-up resistor to 3V.
Connect to positive side of load
Connect to negative side of load
Low signal indicates PSU fan is running below speed or an overtemperature limit was exceeded.
Signal is open drain with a 1kohm pull-up resistor to 3.3V.
High signal indicates both outputs are within regulation limits. Signal is open drain with a 1kohm
pull-up resistor to 3.3V.
1
Refer to product specification for internal pull-up impedances and timing of these signals.
MCD10133 Rev. 1.1, 6-June-11
Page 3 of 8
www.power-one.com
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