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DRV8306EVM: Not 50% duty in FGOUT

Part Number: DRV8306EVM

Hi experts,

Our customer notice unexpected behavior on DRV8306EVM.

They connect hall sensors and capture each outputs and FGOUT, then FGOUT is not 50% duty as attached, seems to be around 70%.

Could you please suggest why this behavior happen?

From top to bottom,

1. FGOUT

2. Hall input A (Noise can be seen but can be disregard due to probing)

3. Hall input B (A little distorted...?)

4. Hall input C

Regards,

Hideki