DRV8711EVM: large current draw

Prodigy 40 points

Replies: 6

Views: 66

Part Number: DRV8711EVM

I hooked up a new DRV8711EVM and ran it in forward and reverse a few times.   After it was sitting idle for a minute or so I noticed a large current draw - approximately 10 amps and  I shut off the power supply.   I smelled something and felt the chips on the board.   Some of the output mosfets were hot.   The motor was the motor supplied in the EVM.   Voltage was 24 volts.   Power supply is a variable supply up to 35 volts and 20 amps.   What would have caused the large current draw?

6 Replies