Joachim Franek wrote: > But I see cross current > in case one leg is active from pwm and a > commutation occurs. Then for about 120ns > I measure a current of 70A (peak). > I need a comp to delay the rising edge > on the upper fet for one cycle of the fast thread > in case in the last cycle the fet was on. > Do not try to control FET dead-time with software. Very simple RC circuits with an added diode to reduce the R in one direction have been used for years. The R delays turn-on, the diode causes fast turn-off.
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