PHOTOVOLTAIC_ISOLATOR_WITH_FAST_RESET_1

Published:2009/7/16 23:23:00 Author:Jessie | From:SeekIC

The combination of a weak photovoltaic isolator pull-up and a strong programmable junction transistor pull-down leads to a very simple half-bridge FET or IGBT driver, which virtually guarantees that the devices won't crowbar the power supply. The device turning off will do so rapidly, but the device turning on will do so very slowly. A dead time is inherent in the circuit dynamics, so no additional circuitry is required to prevent a crowbar or shoot-through effect.



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