Other Parts Discussed in Thread: BQ500511, ,
I am using the bq50002+bq500511 EVM to evaluate charging of some phones with aftermarket charging sleeves.
I have found for a variety of sleeves with Samsung A5 and various iPhones that when the charging reaches above 90% the phones ping indicating charge has stopped. Within a few seconds, it then pings to say charging started again. This randomly continues.
When I charge the Samsung S5 and Samsung S7 I do not get this issue. The S5 has an aftermarket sleeve but that is installed inside the battery compartment. The S7 has built-in support for wireless charging. It seems to be a pattern for aftermarket sleeves that plug into the USB/Lightning connections.
Does anyone have experience of this? It does not appear to be dropout on the voltage rails. It is not FOD issues as I disabled that to test.
Thanks
Trev