TUSB8044A: Source Only PD that works with Hub.

Hi Jack,

Just to confirm, are you looking for a reference design that features an application of the TUSB8044A and a newer PD controller for a host application?

I don't believe we have any recent reference designs for implementing our hubs with a PD controller. However, as long as there is a PD controller on each port for CC communication, I don't see any reason why this wouldn't be possible.

Are you looking to use our hub with DP alt-mode? If so, you would also need something like a TUSB546, or a mux that will help with routing DP and USB3 signaling.

Thanks,

Ryan

Hey Ryan,

I'm not looking for a full design or specifically a newer PD controller, although both would be great. I'm primarily looking for a PD controller that can operate as a source only, providing PPS down to 5V with 20mV steps, and does not require a battery to be hooked up to it. Additionally, it should be able to communicate with the TUSB8044A or an equivalent. Most of the ones I've seen thus far specify that they're sink-only/dual-role and are not supported for source-only.

The hub doesn't need to support DP alt-mode. But if the only ones that support what I require also support DP Alt-mode, that's fine.

Thanks!

Jack G

Hi Jack,

We don't have any specific PD controllers we recommend, but you can use a PD controller with a mux like the HD3SS3212 to route the SS signals to the type-C port correctly and use PD functionality as needed, so long as it is being done on the downstream ports of the TUSB8044A. Our team does not cover PD controllers, so I would recommend looking at their page for devices, or reaching out to them through E2E for any PD questions: https://www.ti.com/product-category/interface/usb-ics/usb-type-power-delivery-ics/products.html.

Thanks,

Ryan