I want to utilize a USB Type-C connector to charge a single battery that powers a device. The device will only function as an upstream facing port (UFP) or sink and no data communication will need to occur using USB2.0, USB3.0/3.1, or Aux pins.
What are the minimum components necessary (besides the Rd resistors) for the CC1, CC2, and VBus lines to use a USB Type-C receptacle to charge the battery off the VBus line? Will the source side recognize complete connection and orientation and know when to send 5V through to VBus or do I need to control that on the sink side?
Electronic – USB Type-C configuration necessary for battery charging only
usb
Best Answer
According to the spec:
TABLE 2: CC PIN VOLTAGE RANGES
If Rd=5.1k 1% then CC Vmax=2.04V