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DRV Fault at high load

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Joined: 2019-11-08 08:31
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DRV Fault at high load

I work on custom VESC based on VESC 6 plus schematics but I'm replace MCU with STM32F4 100pins and type of mosfet using

The problem is when motor get high load so the current is high too, in VESC Tool I'm get a DRV Fault : FAULT_CODE_DRV. But if current motor below 15A no problem.

If I test using VESC 6 it was no problems too at high load.

I'm using supply 48V, BLDC Motor 48V 350W using a gearbox.

I'll try to give pull-down resistor 39k between gate and source at low side MOSFET, but result was same.

Can you give solve my problems ?

Thank you