Hi
There is a problem that POWER GOOD when booting up, but not HIGH,
could you help check the below TPS51215 schematic and any need to adjust
Thanks
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Hi
There is a problem that POWER GOOD when booting up, but not HIGH,
could you help check the below TPS51215 schematic and any need to adjust
Thanks
Hi
I will check it and give you a feedback next Monday.
Hi Gareth
The schematic looks ok, could you check the output voltage and the VSNS pin voltage? Is VSNS at 92%-108%*Vout or 84%-116%*Vout? actually the PG internal comparator detects the VSNS pin, could you help check the Vout and VSNS voltage?
xueliang
Hi Xueliang
Coulu you see the picture( ch 1 Vout , ch2 Power good). The power drop at booting up.
I think it in UVP . Why does it have Vout in the protection?
P1. Pass
P2. Fail
Hi Gareth
I will check it on EVM and give you a feedback later today or next Monday.
xueliang
Hi Gareth
The UVP trigger has a 1ms deglitch time, and there is no time scale in the waveform, it cannot judge. I can't duplicate this phenomenon on EVM. Could you help to capture the SW waveforms for further analysis? zoom in and zoom out waveforms, it includes three signals of sw, vout and PG. thanks!
xueliang