MOSFET Heating Issue in Boost Converter with SG3525 and IRFB4110
I am working on a boost converter to step up DC voltage from 12v to 450v. My switching frequency is 45khz on each channel of the sg3525. I am using irf3205 as my switch. I observed that when i change the switches to another MOSFET like irfb4110 of higher rating the switch/MOSFET gets heated up even with no load at the output, has anyone faced similar issues before? my gate resistor is 10R and my gate to source resistor is 10k
Solution
Read the datasheet of the mosfet, it seems like the current rating is less than it can handle, thereby causing the IRF4110 to overheat. And also check the resistor value required, i suggest you increase the resistance so there will be less current flow to the mosfet
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