Hello everyone,
I've been making a circuit Full-bridge Phase-shift ZVS. I used 2 IR2101 to control high and low side, and all the 4 MOSFETs are IRFP22N60K, as you can see from the figure
The frequency is 50kHz. Dead-time is 1us. The M8 and M7 are lagged by 4us compared to M5 and M6, correspondingly. The Boostrap capacitors I used are one 100nF ceramic cap and one 10uf electrolytic cap. The boostrap diode is HER107 (not MUR120 like in the figure). Everything was fine when I applied 15V to VCC of the 2 IR2101 to test the signal of high side and low side. However, when I apply 300V to the drain terminals of the 2 high side MOSFET, the 2 IC were broken (but they did not warm up significantly, there was no smoke), when i put out 300V and measure the signal again, there was no signal from the HO, and the amplitude of the pulse from the LO was on 3.8V, not 15V like before. I tried 3 times and damage 6 IC but the results were still the same. Can anyone help me, please?
I've been making a circuit Full-bridge Phase-shift ZVS. I used 2 IR2101 to control high and low side, and all the 4 MOSFETs are IRFP22N60K, as you can see from the figure
The frequency is 50kHz. Dead-time is 1us. The M8 and M7 are lagged by 4us compared to M5 and M6, correspondingly. The Boostrap capacitors I used are one 100nF ceramic cap and one 10uf electrolytic cap. The boostrap diode is HER107 (not MUR120 like in the figure). Everything was fine when I applied 15V to VCC of the 2 IR2101 to test the signal of high side and low side. However, when I apply 300V to the drain terminals of the 2 high side MOSFET, the 2 IC were broken (but they did not warm up significantly, there was no smoke), when i put out 300V and measure the signal again, there was no signal from the HO, and the amplitude of the pulse from the LO was on 3.8V, not 15V like before. I tried 3 times and damage 6 IC but the results were still the same. Can anyone help me, please?
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