V110A24C400BL_16 Datasheet, PDF (10/14 Pages) Vicor Corporation – DC-DC Converter Module

Primary Control - 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 2.
Primary Auxiliary Supply
At 5.7V, PC can source up to 1.5mA. In the example shown in
Figure 4, PC powers a module enabled LED.
110V Input
Module Alarm
The module contains “watchdog” circuitry which monitors
input voltage, operating temperature 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 (as an example,
overtemperature) 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 3 and 5.
+IN
PC
Disable
PR
–IN
Disable = PC <2.3 V
Figure 2 — Module enable/disable
+IN
PC
"Module
4 kΩ
Enabled"
PR
–IN
Figure 4 — LED on-state indicator
+IN
PC
PR
–IN
SW1
Auto
Restart
1M
2-20 ms typ.
f (VIN)
SW1, 2, & 3
shown in
"Fault" position
5.7 Vdc
(0-3 mA)
Input Undervoltage
Input Overvoltage (See Note 1)
Overtemperature
Module Faults
50 Ω
SW2
SW3 1 K
1.23
Vdc
6K
1 _{Not applicable for 300 Vdc input family}
+OUT
+S
SC
–S
– OUT
Figure 3 — PC/SC module alarm logic
Fault
5.7 V
PC
SC ^{1.23 V}
40 μs typ.
2–20 ms typ.
Figure 5 — PC/SC module alarm timing
Optocoupler
4 kΩ
+IN _+IN
PC _PC
PR _PR
–IN _–IN
Figure 6 — Isolated on-state indicator
110V Maxi Family
Page 10 of 14
Rev 3.0
06/2016
+OUT
+S
SC
–S
–OUT
Comparator
1.00V
Alarm
Figure 7 — Secondary side on-state indicator
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