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V48B24E24BS1 Datasheet(PDF) 4 Page - Vicor Corporation |
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V48B24E24BS1 Datasheet(HTML) 4 Page - Vicor Corporation |
4 / 8 page Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 FasTrak Mini E-Grade Family Rev. 1.0 Page 4 of 8 Set your site on VICOR at www.vicorpower.com 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, 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. Disable Disable = PC <2.3V +Out +S SC –S –Out +In PC PR –In Figure 1—Module enable/disable. Figure 3—LED on-state indicator. 4k Ω "Module Enabled" +Out +S SC –S –Out +In PC PR –In Optocoupler +Out +S SC –S –Out +In PC PR –In 4kW Alarm 1.00V +Out +S SC –S –Out +In PC PR –In +Out +S SC –S –Out +In PC PR –In Input Undervoltage 2-20ms typ. f (VIN) Auto Restart 5.7Vdc (0-3mA) 50 Ω SW2 SW3 1.23 Vdc 6K 1K SW1 SW1, 2, & 3 shown in "Fault" position Input Overvoltage Overtemperature Module Faults Figure 2—PC/SC module alarm logic. Figure 5—Isolated on-state indicator. 2-20ms typ. Fault SC PC 1.23V 5.7V 40 μs 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. |
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