The image below is the H-bridge that i have design and make out.
**broken link removed**[/URL][/IMG]
This h-bridge is a 24V and use to drive a DC brush motor which is 24V, 150W. After i test it, the driver can work but when i switch the direction, the lower part N-mosfet will burn. Because of this, I want to include snubber circuit to protect my mosfet and the motor but i don't know how to design it. Is the RC snubber is suitable or the RCD snubber is suitable And how to calculate the value of R,C and/D?
Can anyone help ? What actually parameter that i have to find to design the snubber circuit?
The mosfet is mouted with heatsink already. Does if i include the reverse bias diode, i no need to design the snubber circuit for the protection purposes?
The N-mosfet i use is the IRFP260N and the P-mosfet i use is the FQA47P06 and below is the link of the datasheet of both mosfet:
N-mosfet(IRFP260N): https://www.electro-tech-online.com/custompdfs/2008/03/irfp260n.pdf
P-mosfet(FQA47P06): http://www.tranzistoare.ro/datasheets3/fairchild/FQA47P06.pdf
As shown in the datasheet, both of the mosfet have the internal reverse diode, does this enough for my application and i do not have include the snubber circuit to protect the mosfet and the motor?
**broken link removed**[/URL][/IMG]
This h-bridge is a 24V and use to drive a DC brush motor which is 24V, 150W. After i test it, the driver can work but when i switch the direction, the lower part N-mosfet will burn. Because of this, I want to include snubber circuit to protect my mosfet and the motor but i don't know how to design it. Is the RC snubber is suitable or the RCD snubber is suitable And how to calculate the value of R,C and/D?
Can anyone help ? What actually parameter that i have to find to design the snubber circuit?
The mosfet is mouted with heatsink already. Does if i include the reverse bias diode, i no need to design the snubber circuit for the protection purposes?
The N-mosfet i use is the IRFP260N and the P-mosfet i use is the FQA47P06 and below is the link of the datasheet of both mosfet:
N-mosfet(IRFP260N): https://www.electro-tech-online.com/custompdfs/2008/03/irfp260n.pdf
P-mosfet(FQA47P06): http://www.tranzistoare.ro/datasheets3/fairchild/FQA47P06.pdf
As shown in the datasheet, both of the mosfet have the internal reverse diode, does this enough for my application and i do not have include the snubber circuit to protect the mosfet and the motor?
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