i used the attached circuit with atmega 8 to drive dc buck converter and it was working very well , then i increased the input voltage on the drain Vd to 20v and the input current was 4 A suddenly the output on Ho of IR2112 was zero when i removed the converter and i just connected power resistor to the source of the mosfet the output on Ho was 7.6 v when Vd was 9.6. did i lost the driver ?
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