Part Number:DRV8832
Dear all,
I'm using a DRV8832 to drive a simple 3V brushed DC motor. The chip works as expected, I've connected LEDs to both outputs to verify the bridge control functionality.
Now as soon as the motor is attached to the ouputs, things get a little weird, hence the reason I am here.
Lets say IN2=vss, IN1=vdd, i.e. forward. Indeed without motor, OUT1 is at vdd, OUT2 at vss.
With the motor connected OUT2 jumps to slightly below vdd voltage, hence very little current flows between OUT1 and OUT2, insufficient to drive the motor.
I've tried playing with VSET by connecting a potentiometer to it, allowing any VSET voltage between vss and vdd. This was without succes.
Furthermore the current limit feature is disabled (connected to gnd) and the fault pin is never triggered.
Any insight would be useful, note that I dont have access to voltage/current meters (I used a ADC on a stellaris launchpad to readout the voltage)
Thanks
