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  1. #1
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    Do I need to make protections for MOSFETs in H Bridge design?

    Hi all.
    I have a little question.
    I wanna make an H-Bridge( N and P ) to control a 24V DC Motor.
    I have IRF3295 and IRF9530 to use for the H-Bridge.
    Do I need to make some protection for the MOSFETS, like using some ZENER diodes betwen gate and source or the circuit will work like in the attached diagram?
    Thank you all.

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  2. #2
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    irf9530 h bridge

    Yes you need those diodes. Because when DC motors are rotated, it will produce back emf.

    A simplier solution for your motor H bridge is using motor driver chips, teh H bridge and diodes are in one chip with PWM interface to control your DC motor


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  3. #3
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    irf3295

    Looks like you just need to add the diodes and not the zener. The zener should be build into IRF9530. Not sure about IRF3295 though.


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