Our chip is PD controller which manages the PD messages. The voltage and current limitation depends on the power circuit of your board including buck-boost. The USB Power Delivery Spec defines the maximun power capability is 100w,5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3A, 20V/5A can all be satisfied. So, our chip won't be the problem for realizing your design.
The recommended chip for power bank is CCG3PA:
It supports DC input. However, it only supports one Type-C port and one Type-A port, so you would need 2 chip if you want to realize two Type-C ports.
You can take a look at our application note:
Our reference design:
And you should take a look at power delivery specification if you want some basic knowledge:
Thank you so much for the speedy reply. The customer service here is really off the charts. One follow up question though: what is the difference between this at ccg5 with support for two usb type C cables?
The target product of CCG5 is notebook, PC and dock. We have a more mature solution for CCG3PA power bank. Develop power bank with CCG5 is much more difficult and could met unexpected problems. And CCG5 is more expensive.