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TPD6S300A: D+ & D- on SBUS OVP, ESD / VBUS ESD / RPD and PD controller

Etienne Marty
Prodigy 40 points
Part Number: TPD6S300A
Other Parts Discussed in Thread: TVS2200

Tool/software:

Hello,

I am currently designing a USB 2.0 hub with two USB-C ports capable of pass-through charging using Power Delivery. I am considering using the TPD6S300A chip, but I have some questions and need clarification on a few points:

  1. Since I am not using the SBUS pins, to protect D+ and D- from ESD and OVP, should I connect them to the port intended for SBUS and the ESD protections D1 and D2? This seems redundant to me because the SBUS pins are already protected against ESD along with OVP.

  2. Do the VBUS pins need to be protected against ESD? If so, is it possible to achieve this with the TPD6S300A component, or do I need to add an additional TVS diode?

  3. The resistors on the CC lines for the dead battery mode—won't they interfere with my PD controller, which also has resistors on the CC pins for the same purpose? I am using the VL103R chip from VIA Tech and am having trouble determining if the two are compatible. Would it be better not to connect the RPD pins to the CC lines?

Thank you for your help.

Best regards,

Etienne