POWER_MOSFET_SWITCH

Published:2009/7/10 4:15:00 Author:May | From:SeekIC

This solid-state switch senses and interrupts an overcurrent condition within 2μs. I1 allows the circuit to float. IC1 runs at 150 kHz and full-wave doubler D1/D2 provides 15 V to the gate of Q1. An overcurrent sensed across R1 triggers Q3, removes gate bias from Q1, and opens the circuit formed by the full-wave bridge and Q1. C1 and R3 allow the circuit to handle surges.



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