1 Reply Latest reply on Mar 25, 2020 8:50 PM by YiZ_31

    Create custom USB-PD cable

    MiMu_4671456

      We want to provide power using USB-PD to a device with custom (waterproof and durable) connectors.

      Ideally we also want to transmit data and/or video, so USB seems like a good choice.

       

      From my initial research I assume it is feasible to create a Type-C to <custom> cable, add a CCG2 or CMG1 chip to the cable and enable high voltages and currents using the EZ-PD Configuration Utility, while setting the "cable type" flag to "captive".

       

      Do you see any problem with this concept?

      Is it "allowed" to use a different connector than Type-C in a custom application where you can provide a custom cable for your device?

      Do we need any type of USBncertification to be able to sell such a cable with the device (apart from CE, MIL, etc. certification of the device itself)?

       

      What is the main difference of CMG1 and CCG2 in such a cable application?

        • 1. Re: Create custom USB-PD cable
          YiZ_31

          Hi,

           

          Your understanding is correct. A captive cable assembly is a cable assembly that is terminated on one end with a USB Type-C plug and has a vendor-specific connect means (hardwired or custom detachable) on the opposite end. If you do not want to get USB-IF certification (that means USB-IF logo on your product), then you can do whatever you want.

           

          USB-IF has some document you should read:

          USB Type-C® Cable and Connector Specification Revision 2.0, August 2019 and ECNs | USB-IF

          CMG1 is a fixed-firmware device with only 9-ball CSP package. CCG2 is more flexible. But we usually will not recommend customer do customized modification on cable firmware and we do not release source code for cable application.


          Regards,
          Eddie