nPM1300 VBUS current limits

RE: nPM1300 VBUS current limits

Naeem Maroof — Tue, 31 Dec 2024 02:57:32 GMT

Hello,

[quote user="vadima"]Does the SYSREG set/reset the VBUS current limit value after the power source capability was detected[/quote]

The USB power source capability is detected by one CC line at a time, depending on the orientation of the USB plug on the device. Port detection via CC does not automatically update the VBUS current limit, as this has to be read by the host first and then later be updated. Hence, it's always the host that will configure the VBUS current limit.

RE: nPM1300 VBUS current limits

vadima — Sat, 28 Dec 2024 09:05:32 GMT

Hello Noeem,

> Can you check what you are getting from your device?

100mA.

And what about my second question:

"Does the SYSREG set/reset the VBUS current limit value after the power source capability was detected.?"

RE: nPM1300 VBUS current limits

Naeem Maroof — Fri, 27 Dec 2024 20:16:49 GMT

Hi Vadima,

I can see what you are referring to. But it also says that "Reset value from OTP, value listed in this table may not be correct."

It looks like the statement in the section 6.1.1 stands valid. Can you check what you are getting from your device? I will ask internally about it.