Other Parts Discussed in Thread: DRV2603
I am trying to drive external LRA by using the external PWM mode of DRV2603 evaluation kit. Even I didn't connect any input, the output line shows pk-pk 2.24V output like the picture below.
I put the board into the Additional Hardware Modes and selected Mode3 B2
Also I realized when I use Mode3 B3(enable with LRA auto-resonance off) the noise goes away but the LRA gets hot really quickly.
Thank you for helps