TPS65982-EVM: ac adapter unplugging effect

Diego diaz

Hi when i put the TPS65982-EVM in mode high power charge adapter, and i connect one esternal power 20 @ 5 to one macbook pro.

The evaluaton board, start to link with mac and it starts to make a plug-in and unplugging effect continuously.

over 9 years ago

0 Diego diaz over 9 years ago

Prodigy 70 points

Does anybody know why that failure happened?

0 Praneet Kumar over 9 years ago in reply to Diego diaz

TI__Genius 16370 points

Can you please capture and share the PD logs and scope-capture (VBUS and CC) when the issue is seen? Also, share the configuration-file/application-binary that's programmed on the 82-EVM.

-/Praneet

0 WST over 9 years ago in reply to Praneet Kumar

Expert 1025 points

I have seen this happen when the supply isn't up to the task of giving all of the current asked for. It can' t give the 5A in this case and so the voltage drops on VBUS and a hard reset is issued.

0 Diego diaz over 9 years ago in reply to Praneet Kumar

Prodigy 70 points

Hi, I'm using the default programming on the board.
With this ftdi interface, could i read pd logs and program the evaluation board?
thanks
docs-europe.electrocomponents.com/.../0900766b811020ee.pdf

0 Diego diaz over 9 years ago in reply to WST

Prodigy 70 points

Hi, i changed the source and the Emarked cable, and happen the same i think that is a configuration issue

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TPS65982-EVM: ac adapter unplugging effect