ROBUST CABLE-TYPE DETECTION FOR USB POWER DELIVERY

摘要

A system and method for detecting a USB cable-type. A USB PD device configured at a near end of a USB cable is configured to (i) receive and process a signal from a device at a far end of the USB cable to determine a power rating of the USB cable and (ii) adjustably establish power delivered by the first device to the USB cable as a function of the determined USB cable power rating.

主权项

1. A system comprising:
a universal serial bus (USB) cable having a near end and a far end and including a Vbus wire; a first device having a receptacle configured to be coupled to the near end of the USB cable; and a second device configured to be coupled to the far end of the USB cable, the second device configured to generate a signal on the Vbus wire; wherein the first device is configured to determine a power rating of the USB cable by receiving and processing the signal from the second device through the receptacle.