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V24C24C150BL Datasheet(PDF) 10 Page - Vicor Corporation |
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V24C24C150BL Datasheet(HTML) 10 Page - Vicor Corporation |
10 / 14 page 24V Input 24V Micro Family Rev 5.3 vicorpower.com Page 10 of 14 4/2013 800 735.6200 Module Enable/Disable The module may be disabled by pulling PC to 0 V (2.3 V max) with respect to the –Input. This may be done with an open collector transistor, relay, or optocoupler. Converters may be disabled with a single transistor or relay either directly or via “OR’ing” diodes for 2 or more converters. See Figure 2. Primary Auxiliary Supply During normal operation only, the PC Pin can source 5.7 V @ 1.5 mA. In the example shown in Figure 4, PC powers a mod- ule 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, Input Undervoltage) 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 nor- mal state after the fault has been cleared. See Figures 3 and 5. Disable Disable = PC < 2.3 V +IN PC PR –IN Figure2—Moduleenable/disable. Figure4—LEDon-stateindicator. 4 kΩ "Module Enabled" +IN PC PR –IN Optocoupler +IN PC PR –IN 4 k Alarm 1.00 V +OUT SC –OUT Comparator Input Undervoltage Input Overvoltage [a] Over Temperature Module Faults 2-20 ms typ. f(VIN) Auto Restart 5.7 Vdc (0-3 mA) 50 Ω SW2 SW3 1.23 Vdc 6 K 1 K SW1 SW1, 2, & 3 shown in "Fault" position +OUT SC –OUT +IN PC PR –IN [a] Not applicable for 300 Vdc Input family 1 M Figure3—PC/SCmodulealarmlogic. Figure6—Isolatedon-stateindicator. 2-20 ms typ. Fault SC PC 1.23 V 5.7 V 40 µs typ. Figure5—PC/SCmodulealarmtiming. Figure7—Secondarysideon-stateindicator. PRIMARY CONTROL - PC PIN |
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