Hi, I have been constructing (transformer based) homemade inverters mostly using CD4047 as my drive circuit. Then one day while I was doing my research online, I came across an H-bridge system — one that I had never thought of. I was impressed with the fact that the system allows the use of a transformer without centre tap.
For a couple of days I have been trying out the circuit above which I downloaded from the web, but my problem is that the circuit seems to have been designed to be used with SG3525, and in my experience I have never constructed a drive using SG3525.
OK, I tried using CD4047 with the H-bridge system, and for like 1 minute it seemed to be working. But all over sudden, two MOSFETs blew off, one from the high side and one from the lower side.
So my question is, what should be done to the circuit to avoid MOSFETs blowing? Initially I wanted to design a 24V 6000W inverter charger; the MOSFETs I used were 4× IRF064.
Also, if you can try to advise me what to do if I wanted to add more MOSFETs in parallel and charge the batteries using the same MOSFETs and transformer, I will really appreciate it.
Below is my drive circuit using cd4047.