Other Parts Discussed in Thread: , BQ25792, BQ25792EVM
Tool/software:
Hi Team,
I asked the question in E2E, but no response for two weeks. And so I raise this E2E. Please help assign the person who has bandwidth to reply me.
Background : We use TPS25751 as typeC controller. And our use cases are 5V/3A and 5V/1.5A with DRP role.
Originally, we plan to use the 0x29[1:0] to switch the current. For the description, we need to satisfy two conditions
1. Source role enable and active.
2. No explicit USB PD contract.
So after TPS25751 entering into APP mode, we disable the PD by using 0x28[10]
And then we connect to our cell phones. (iPhone and Samsung)
1.iPhone : Initial charge current is 3A and the charge current can be switched to 1.5A when 0x29[1:0] = 01b, but the charge current can't be recover to 3A when 0x29[1:0] set to 10b
2.Samsung: No initial charge current. Unless, I enable the PD by using 0x28[10].
Ps. If we don't disable PD, both of iPhone and Samsung can be charged and 0x3F[3:2] = 11b. 0x29[1:0] can't limit the typeC current.
Do you have recommended sequence for my use case? Our application is power bank.
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Regards,
Roy
