I'm having trouble with my P9242-R based wireless charger that I designed for a client. The chip in question is this:
I used the exact same circuit given in the official datasheet. Followed the layout guidelines.
The issue I'm having is that the board powers on, green LED flashes for a second, then the red LED starts flashing at 4 Hz indicating a fault.
I tried getting the status register value via i2c bus and it seems like it's indicating a "over temperature fault". The problem is I kept getting different values while trying to read the status register via i2c. But the number "6" kept coming up which might indicate the temperature fault according to the datasheet.
Upon further investigation, I also found the Q6 FET to be insanely hot to the touch. I replaced the FET, and yet the new FET continued to be super hot to the touch. I checked for shorts but couldn't find any. The Q6 FET is indicated in the picture below.
Any help would be appreciated! Am I missing something?
sorry for the late response.
20914_IndiumTx-01B_Top.pdf 20914_IndiumTx-01B_Inner2.pdf 20914_IndiumTx-01B_Inner3.pdf20914_IndiumTx-01B_Bottom.pdf
Just pushing the thread up