Post Go back to editing

H-bridge application of ADuM4223 for stepper motor

Hello Team,

I am using ADuM4223 in H-bridge for driving stepper motor ( model no.: 34HS46-5004D-E1000)

Below is schematic of stepper motor driver circuit. Here, 12V is supplied to ADuM4223 and  24V supplied to H-Bridge. Host micro controller is used for controlling motor. 

I am facing problem of MOSFET (csd18537nkcs) damage. Vds of MOSFET is 60V and Id is 50A.

The frequency of failure of MOSFET is not fixed.  Some times driver runs for 20 day continuously. System involves frequent ON and OFF operations in different modes.    

Please guide me on this. Let me know any other information needed.