MP2722 INT pulse

Battery Management
1

Hi experts,
I am using MP2722 in my project for USB Charging. I designed my system to work under low power mode only wake up when INT happen. I find this chip has a INT pin to alert MCU for many events.

  1. I would like to use CC INT to detect attach and detach.
    Is the correct flow to detect whether a device connected or not. Device attach → MP2722 produce INT → MCU GPIO INT → MCU read CC state register then judge attached device(sink or source).

  2. I also find it has fault INT to indicate some fault, what is the behavior INT pin when fault happens. will it continuous create INT, or only once or in other patterns?

And do you have some ideas for how to integrate this chip in low power design and some example code on how to correctly use this chip.
Thanks for your reply

2

Hello,

You can monitor the appropriate registers for the status of CC pins.
For the interrupt, a 256us pulse is generated if an interrupt occurs. This list can be found on page41 of the datasheet.

You can utilize our evaluation board with our GUI to play around with the settings for your specific application.
EV2722-RH-00A | 1-Cell, 5A, NVDC Buck Charger with USB-C DRP Detection Evaluation Board with Serial Interface Control | MPS (monolithicpower.com)

Best Regards,
Yu