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Please we need a clarity on both PMIC's. what is main diff bw both. Why we need to use different PMIC's for D1559 processor core power rails?
Hi Arjun,
TPS51631A is VR12.5 protocol supported controller, and it only support none-zero loadline application. If it is used to other zero-loadline required rail, you will lose a little bit DC accuracy due to loadline, however, as long as AC+DC meet requirement, it is still ok to be used.
If you don't like it additional voltage drop due to loadline, then please use TPS53625, it supports zero-loadline application.
Hope this answer your questions.
Thanks
Chasel