Dear Supporting team,
For my bq500212a, the gate and coil voltage signal is fine as the datasheet with 80ms pulse and 300ms rest under led mode 2.
The led2 keep ON and led1 and 3 are Off which response as fault.
Two behavior are strange on the board.
1. The supply voltage is having pulse (like the gate signal) on top of the 3.3V
2. The comm+ signal is having offset, and pulse. which is the most different from correct discharge behavior.
I checked the demodulation circuit and the value are same with reference design. I did not use the diode on board as I notice later that its not included in "PWR550" design.
I wonder if my pulsed noise on Vcc will have serious problem?
Also, what are possible problems on the Comm+?
Thanks and Best Regards,
Calvin