DPDT/H-bridge switch for 24V 4A max load by use of Mosfets,

Thread Starter


Joined Aug 30, 2017
How is the correct DPDT or H-bridge switch for 24V 4A max load DC motor by use of Mosfets, how is correction of below ?

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Please give useful explanative solution


Joined Jun 19, 2012
There is no gate drive in this circuit, the gates will be floating, at an indeterminate voltage.

If you have a DPDT switch, you don't need any transistors to reverse the motor.

Audioguru again

Joined Oct 21, 2019
Even if you switched suitable gate voltages to the Mosfets to turn them on or turn off, during the switching an upper Mosfet and a lower Mosfet will both be turned on for a moment, shorting the power supply and getting very hot, called "shoot-through current". Therefore a delay must be added so that one Mosfet turns off before the other Mosfet turns on.