Hello Janice,
I'm sorry for my late response because my TPS65217C EVM was broken
due to miss operation and I ordered new EVM.
I got the new EVM last week and I checked TPS65217C wakeup behavior
with nRESET button pushing and releasing when VBAT is connected to
AC.
The result was that SYS was not shut down after 5 sec with PWR_EN=L.
I wrote the current problem of my customer again.
1. My customer is using TPS65217C for TI CPU.
2. They are using AC input only. They are not using USB input. USB is connected to GND.
3. They don't use battery. So they are using same connection as Figure 56
on page76 of TPS217(SLVSB64G) datasheet.
4. The current problem is that TPS65217C can not wakeup by nRESET button
push and release(Level is H -> L -> H) when AC terminal voltage is 4.65V or less.
5. AC voltage is goes down to 4.65V or less once, after that even if the voltage come back to 5.0V,
TPS65217C can not wakeup. When AC voltage is 5.10V or more, then the device wakeup by
nRESET button.
So could you please advice me how to wakeup TPS65217C by nRESET button
when AC terminal voltage is 4.3~4.65V?
Best regards,
Kazuya Nakai