I don’t know if anyone can help but I am trying to see if this is possible or if there is a module for it. I know there are USBC PD Trigger boards but that seems to add USBC functionality to a circuit that will negotiate with a PD charger. So I need a variable PD charger with a USBC connector that will plug into the trigger and then I can select the output voltage.
What I want is a module that will take DC power from a workbench PSU (30V/10A) that will allow PD negotiation with the device I am trying to power, such as a laptop with a USBC charger port. My bench PSU has USBA and USBC ports but they are limited to 5 and 10V max. If I have a 20V/3.25A laptop, I want to be able to just set my PSU to 20V/3.25A, connect the wires to my direct out with the trigger on the end, and then be able to use a USBC cable from the module to the laptop to charge it.
Is there a module that does this or is there a suggestion as to how I may achieve this?
I have looked at those but the PD trigger/decoy modules only seem to work one way. I attached a diagram of what I am talking about.
With the modules available, at least from my understanding, the USBC port is used to negotiate with a PD charger. So if the charger is 5/10/15/20V, then you can set the module for that voltage and it will negotiate that power delivery, which will then output that voltage/amps to the output terminals that you can wire to a device, thereby making it a USBC powered device.
What I want to do is the bottom diagram. I want to power the PD module directly from my workbench PSU so I can control the voltage and amps manually, and then have the USBC port on the PD module negotiate on the output side between itself and the device I connect via USBC cable.
So per my example, I get in a laptop that I am troubleshooting that has a USBC charging port that takes 20V/3.25A. I can then just connect my leads to my PSU and set it to 20V/3.25A, set my PD module to 20V, and then use a USBC cable from the module to the laptop to power it. This way I am able to essentially power any device with USBC charging without having the exact charging cable for it, which is sometimes the case in my shop.
I found something I believe is the answer to my question. It takes power from my PSU and allows me to charge USB-C (or USB-A) and negotiates the delivery based on my PSU settings.
