Brushless dc motor controller

[Nihaludeen]

I am trying to make a driver to run a bldc motor, but its not working properly.
Can anyone guide me how to make a controller for bldc motor.
Motor specifications (36 volt and 15 amps). The mosfets are keep on burning and i cant able to solve the it.
I have attached the circuit below.

 

[FvM]

The PMOS gate drivers must be expected to exceed +/- 20V Vgs maximum rating at 36 V supply and damage the transistors. You should better use push-pull gate drivers to turn the transistors fast off.

 

[Nihaludeen]

I have first use gate driver(ir2110) for low and high side switch.But I got a problem, the motor is running on only single direction and not getting reversed.If i try to reverse it ,components gets heated up and motor is not reversed.

 

[FvM]

IR2110 has the problem of bootstrap failure with 100 % duty cycle, but I don't see a relation to direction reversal. I think IR2110 can be used if you keep a permanent PWM signal.

 

[Nihaludeen]

Can you briefly explain. I have got the same problem while using with transistor as well as ir2110

 

[Nihaludeen]

Bootstrap failure in the sense, you are saying that should not use ir2110

 

[FvM]

I say, you can use IR2110 if you manage to avoid 100 % duty cycle for high side, respectively high side on-time longer than bootstrap capacitor time constant.

I don't know which other possible problems occur in your design. IR2110 should basically achieve a legal gate range and fast gate pulses. But there are still possibilities to achieve bridge short by overlapping control signals or to damage the transistor by overvoltage of a bad circuit layout.

 

[Nihaludeen]

You are right I am getting short delay in high side ,while switching. But by using ic as well transistor , I can able to run motor single direction but I can't able to run on another direction.
I am using a (mje3055) transistor which is 60 volt and 10 amps.
And I am using this transistor to the base of the mosfet , so mosfet gets greater volt on it's base to switch.
Can you clarify me, hope it will help me.

 

[Nihaludeen]

[merged] Bldc motor controller

I am using 3 phase bldc motor which has a spec of 36v and 10amps(360w).
I have used a h bridge circuit to control it. But the motor is running only on single direction. And the mosfet gets heated up.Mosefet irf3205(55v and 98amp) and irf4905(55v and 75 amp).

 

[FvM]

I am using a (mje3055) transistor which is 60 volt and 10 amps.
And I am using this transistor to the base of the mosfet , so mosfet gets greater volt on it's base to switch.

´
Sounds strange. Please show a schematic.

As for failing direction reversal, I would expect a wrong phase sequence.

 

[Nihaludeen]

I have the updated h bridge. which gives the same problem by running only on single direction.