TPS65983B:not activated charging protocol 20v 5a

slava raskol

Part Number: TPS65983B

I followed the reference design inel AR SP NGFF REV2P5_FINAL, but I cannot understand why the power supply to the host does not work, could you please check my circuitSchematic_tdt3 egpu_2020-09-29_09-16-25.pdf

over 4 years ago

0 Emma Hoying over 4 years ago

TI__Genius 9630 points

Hello,

I've assigned this to the relevant expert who will get back to you shortly.

Regards,

Emma

0 Scott T over 4 years ago in reply to Emma Hoying

TI__Expert 4455 points

Hi Slava,

I can help support the TPS65983B PD Controller.

Can you provide more detail on the issue you are seeing? What are you expecting to happen?

Have you downloaded the TPS65983B Application Configuration and Firmware GUI and created the matching Intel TBT reference project for your layout? This may need to be merged into the TBT shared Flash.

Regards,
Scott

0 slava raskol over 4 years ago in reply to Scott T

Prodigy 20 points

Yes spi flash is shared. when I connect the device to the host on the vbus bus I see only 5v in the configuration set 5, 12, 20

0 Scott T over 4 years ago in reply to slava raskol

TI__Expert 4455 points

Hi Slava,

Have you changed the schematic implementation versus the reference layout?

Did you modify the TX Source Cap settings?

Do you have a PD analyzer to check communication between device and host? If yes, can you check the Source Cap and Request messages to see what voltages are offered and requested between device and host?

Regards,

Scott

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TPS65983B:not activated charging protocol 20v 5a