DRV2511-Q1: DRV2511-Q1 abnormal output

Tool/software:

Hi Sirs

Question:

1. We input positive voltage PWM signal(0~3V3) to DRV2511 with PVDD 5V => Driver could amplitude normal output from 3V3 to 5V

2. As PVDD 6~18V => Driver will produce impluse waveform instead normal PWM waveform.

    => We confirm the power source to PVDD is abundant.

    => Could you help to solve this issue?

Condition:

1. Driver Ouput: No load

2. Our schematic could be shown as attached.(Follow DRV2511 EVM and Parts)

3. Set up

- FS0, FS1, FS2 = Low

- STANDBY = Low

- Gain = 20kohm to Gnd

 - Reg = 1uF to Gnd