DRV110: Abnormal waveform in hold time

Tool/software:

Hi~

I use DRV110PWR in relay control.

Here is the waveform that can drive the relay normally,

yellow = OUT pin (N-MOS VGS)

green = current cross to RES410

orange = N=MOS VDS

blue = relay status (High means relay open ; low means relay close)

and here is the waveform that cannot drive the relay normally.

These two different waveforms come from PCBA produced in the same batch.

The PCBA that are unable to properly drive the relay are in the minority (7pcs/100pcs)

I think there is a significant difference at the OUT pin.

This may cause the relay to fail to stay closed.