I’m turning a very quick design for a PCB and I do not have time to test the functionality of the BQ24266 using an eval board. So I’m hoping you can answer a question for me before we have 100 boards made here very shortly.
We are using the BQ24266 as recommended, but it’s a requirement to have a high-side FET switch between the battery and the battery input to the charger. See attached snippet.
Here are my questions:
- Will the battery still charge when the FET switch is OPEN? I’m concerned with how the IC knows how to charge. Is it putting out a constant float voltage and then looking at the battery current? Or does it need to see a battery voltage before it will charge?
- Will the battery still charge when the FET switch is CLOSED? I’m 99% sure it will but I could really use a blessing from someone at TI as this would be a major failure
- Looking through the datasheet, I don’t see any ability to disconnect the battery from SYS, even in high-impedance mode. Is this correct?
