Part Number:DRV8323
Hi,
I am using DRV8323HRAR for driving a BLDC motor, configured the Driver with 6PWM mode by connecting the MODE pin to the Ground. IDRIVE is open so that the gate current can be 120mA. Attached is the schematic of the driver.
I am using the MOSFET with part number FDD8896 who's RDS on is 6.8m ohm at VGS of 10V.
Now i have connected an 18K resistor between VDS and DVDD, in this case the current limit to the motor was suppose to be 289Amps(1.88V/6.5m ohm). But the motor consumes on 2Amps of current in this case.
To cross check my other hardware, i have connected DVDD to the VDS, in this case the motor runs fine without any problems. and maximum current is also consumed. But i am worried in case of the Motor Jam the MOSFET will damage because of too much current.
Kindly let me know what i am missing to limit the current.
Looking forward for your support.
Best Regards,
Shivaraja.N
