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參數資料
| 型號： | PS48M1V8CF4 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 文件頁數： | 4/8頁 |
| 文件大?。?/td> | 260K |
| 代理商： | PS48M1V8CF4 |
Vicor Corporation Tel: 800-735-6200 978-470-2900 Fax: 978-475-6715
Page 4
CONTROL FUNCTIONS - PC PIN
Module Enable/Disable
The module may be disabled by pulling PC below 2.3V with
respect to the –Input. This may be done with an open collector
transistor, relay, or optocoupler. Multiple converters may be
disabled with a single transistor or relay either directly or via
“OR’ing” diodes. See Figure 1.
Module Alarm
The module contains “watchdog” circuitry which monitors
input voltage, and internal operating parameters. In the event
that any of these parameters are outside of their allowable
operating range, the module will shut down and PC will go
low. PC will periodically go high and the module will check to
see if the fault has cleared. If the fault has not been cleared, PC
will go low again and the cycle will restart. The SC pin will go
low in the event of a fault and return to its normal state after
the fault has been cleared. See Figures 2, 4.
Disable
Disable = PC <2.3V
+IN
PC
PR
-IN
Figure 1—Module enable/disable.
Figure 3—LED on-state indicator.
4k
"Module
Enabled"
+IN
PC
PR
-IN
Optocoupler
4k
+IN
PC
PR
-IN
Alarm
1.00V
+OUT
+S
SC
-S
-OUT
Input Undervoltage
2-20ms typ.
f (VIN)
Auto
Restart
5.7 Vdc
(0-3mA)
50
SW2
SW3
1.23
Vdc
6K
1K
SW1
SW1, 2, & 3
shown in
"Fault" position
Input Overvoltage
Module Faults
+IN
PC
PR
-IN
+OUT
+S
SC
-S
-OUT
Figure 2—PC/SC module alarm logic.
Figure 5—Isolated on-state indicator.
2-20ms typ.
Fault
SC
PC
1.23V
5.7V
40
s typ.
Figure 4—PC/SC module alarm timing.
Figure 6—Secondary side on-state indicator.
Primary Auxiliary Supply
At 5.7V, PC can source up to 1.5mA. In the example shown
in Figure 3, PC powers a Module Enabled LED.
For the most current data and applications support, visit vicr.com.
PR ELIMINAR Y
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