V110B24C200BL Datasheet, PDF (8/13 Pages) Vicor Corporation – 110V Input Mini Family DC-DC Converter Module

CONTROL FUNCTIONS - PC PIN
Module Enable/Disable
The module may be disabled by pulling PC below 2.3 V 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.
Primary Auxiliary Supply
At 5.7 V, PC can source up to 1.5 mA. In the example shown
in Figure 3, PC powers a module enabled LED.
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 2 and 4.
+In
PC
Disable
PR
–In
Disable = PC <2.3V
Figure 1 — Module enable/disable.
+Out
+S
SC
–S
–Out
+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 2 — PC/SC module alarm logic.
"Module
4kΩ
Enabled"
+In
+Out
PC
+S
SC
PR
–S
–In
–Out
Figure 3 — LED on-state indicator.
Fault
PC ^{5.7 V}
SC ^{1.23 V}
40 μs typ.
2–20 ms typical
Figure 4 — PC/SC module alarm timing.
Optocoupler
4 kΩ
+In
+Out
PC
+S
SC
PR
–S
–In
–Out
+In
+Out
PC
+S
SC
PR
–S
–In
–Out
1.00V
Alarm
Figure 5 — Isolated on-state indicator.
Figure 6 — Secondary side on-state indicator.
Vicor Corp. Tel: [phone] Fax: [phone]
110V Mini Family
Set your site on VICOR at vicorpower.com
Rev. 2.3
Page 8 of 13