I think (== guess) both DRV and DONE are being disturbed. From the link, one may be due to some back EMF -- there is a collapsing magnetic field from the DC-DC's inductor, the other may be a transient high on the GPIO at start from reset. For the latter, an RC circuit was used to block the transient.
Without an oscilloscope to check, it's hard to know for sure. Try both tweaks separately, then together. For reliability, I think we should be conservative and give the TPL5110 all the help it can get.
Without an oscilloscope to check, it's hard to know for sure. Try both tweaks separately, then together. For reliability, I think we should be conservative and give the TPL5110 all the help it can get.
Statistics: Posted by katak255 — Mon Jan 20, 2025 1:10 am