How to know the coil cell is charged in PF3001

[bin_lei]

We had used the coin-cell charger in PF3001, we want to indicate it by LED when the coil-cell is charging or is charged, but how to know the coil cell is charging or is charged?  Thank you.

[guoweisun]

Hi

I have concept below if you are interest in it you could try:

1: Set the charge voltage(VCOIN (V)) such as 3V.

2: Connect the VCOIN (V) line from your board with voltage comparator input port , also connect  reference voltage 3V to comparator other port.

3: If actual VCOIN is above setting value(3V),there is output signal on comparator ,this signal high or low level also can be showed in LED output.

[bin_lei]

Thank you. That will be added a comparator, can I used the ADC pin in IMX6UL for this function?

[guoweisun]

Please show me more information,if use ADC then what to do next?

[bin_lei]

We plan to do like this: read the ADC pin and compared it with 2V/3.1V by software, if it is less than 2V, enable the charger, indicate it is charging with a LED by a GPIO. If it is more than 3.1 disable the charger, indicate it is charged with a LED by a GPIO. Is it feasible?

[guoweisun]

Yes,it's feasible.

[bin_lei]

Got it. Thanks.