[SOLVED] H-bridge driving problem,MOSFET frequently damage

[Mithun_K_Das]

so you suggest IR2110 in this case?

 

[FvM]

Yes. It combines easy power supply of the bootstrap principle and low impedance push-pull driver, as required for fast switching.

 

[Mithun_K_Das]

ok. then i can.

 

[kabiru]

.the above circute diagram is a H-BRIDGE.driver circute i have been using it over 6years and it working perfect so just try it.

 

[Mithun_K_Das]

what are the values of L1 & L2?

 

[Mithun_K_Das]

To: RCinFLA
the circuit you posted, I tried this all the day long. but there is a big problem i found. every time I connected the DC-DC converter get damage(I used a 8A fuse, & every time fuse damage without any load). Can you help me in this case?

 

[RCinFLA]

To: RCinFLA
the circuit you posted, I tried this all the day long. but there is a big problem i found. every time I connected the DC-DC converter get damage(I used a 8A fuse, & every time fuse damage without any load). Can you help me in this case?

If you are trying to run it at high switching rate for a sinewave PWM chopper it will not work. It is a modified sinewave (modified squarewave) inverter.

You must drive with the proper duty cycle, as driven by the schematic, to avoid cross conduction on the MOSFET's.

Use an IR2110 driver. It makes things so simple.

 

[Mithun_K_Das]

i found pure square wave in your circuit. is this the main cause of damage? I've not found IR2110 yet in my local market. thats why I'm trying your circuit.