This is quite true, I am presently designing one of these universal charger, following USB Battery charging specification, and guess what, most phone don't even comply with the so call "dedicated charger" most of them won't even charge with the 2 15K to ground. It is a nightmare design. You don't happen to have any experience with this?
This is quite true, I am presently designing one of these universal charger, following USB Battery charging specification, and guess what, most phone don't even comply with the so call "dedicated charger" most of them won't even charge with the 2 15K to ground. It is a nightmare design. You don't happen to have any experience with this?