Hi
Since I have built a full bridge circuit which is exactly same to the attached diagram. I have managed to get high and low output of square waveforms and I am pretty happy with this. Instead of applying 200V on the mosfet, I used 30V as part of test however I limited the current up to 500mA in order to protect the circuit. When powering my first PSU for two IR2110 driver circuit which was ok. Then I powered the second PSU for the MOSFET section, the current shot up to 500mA @ 1V and found out that Q4 of MOSFET was quite pretty warm while the rest of MOSFET were normal. I double-checked the circuit that I built and yet I could not pin-point the source of problem. I changed MOSFET for Q4 in case the first one was faulty. To my surprise, I still got the same result.
Now I thought that my circuit could be wrong and I am not sure at the moment. Hoping to hear from you to help me to resolve this matter asap and looking forward to see a bipolar square waveform on the left side of full bridge circuit.
Regards
dd77
Since I have built a full bridge circuit which is exactly same to the attached diagram. I have managed to get high and low output of square waveforms and I am pretty happy with this. Instead of applying 200V on the mosfet, I used 30V as part of test however I limited the current up to 500mA in order to protect the circuit. When powering my first PSU for two IR2110 driver circuit which was ok. Then I powered the second PSU for the MOSFET section, the current shot up to 500mA @ 1V and found out that Q4 of MOSFET was quite pretty warm while the rest of MOSFET were normal. I double-checked the circuit that I built and yet I could not pin-point the source of problem. I changed MOSFET for Q4 in case the first one was faulty. To my surprise, I still got the same result.
Now I thought that my circuit could be wrong and I am not sure at the moment. Hoping to hear from you to help me to resolve this matter asap and looking forward to see a bipolar square waveform on the left side of full bridge circuit.
Regards
dd77
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