Hi,
In the TPS65920 TRM, section 5.2.1.4 I don't understand the statement in bold:
The PWRON signal is activated by a push-button when the device is in master mode. In master mode, the
voltage on this input is the battery voltage. The PWRON signal can also be driven by a digital signal when
the device boots up in slave mode. In slave mode, PWRON pulls low when VBAT rises, and PWRON
must be pulled down by an external pulldown on this pad.
What does this mean ? Why would I need an external pull-down if "PWRON pulls low when VBAT rises" ?
My TPS65920 is in slave mode, its PWRON is connected to the PGOOD output of another DC/DC, with a pull-up on the 3.3V output. The DC/DC forces the PGOOD to 0 when the output is not good. Does it look ok?
Regards
Philippe
