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What is the maximum safe operating frequency of NCP1380?. Unlike NCP1381 it does not features max frequency clamp ( ton +toff = 8us).

The maximum switching frequency obtainable with the NCP1380 is around 250 kHz. At this frequency, calculated that the power dissipation of the controller itself would be around 100 mW if we consider a VCC = 15 V and a total gate charge for the MOSFE T connected to DRV pin of 20 nC. The SO8 package is able to dissipate this amount of power. Answered by:
ON Semiconductor
2014-07-07 10:33:31.716