HI
I am developing high power PSFB DC/DC stetp up converter with switching freq. 16 khz. One of the low freq. phase shift pwm contolers is UC3875 wich i am using in project, it gives max delay time 2,2 us which is
not enough because of snubber capacitors 45 nF across IGBT, high-side IGBT closes almost at the same time low-side opens. (snubbers due to welding mode of the converter),
Is there any other pwm contoler with longer delay time, excluding DSP or microconrollers.?