![]() ![]() ![]() Others need to be set up in a way to provide the power as required by the USB Type-C chip. Some voltage regulators will interface with the USB Type-C chip over I 2C and provide the required voltage. The power components used with the chip need to be selected to handle power up to 100 W. Depending on the nominal voltage of the battery pack, the topology for the regulator could be buck, boost, or buck-boost. Voltage regulator: This chip provides the required voltage for the USB Type-C VBUS, which has been negotiated by the USB Type-C PD chip.The number of control lines used varies with different chips. This information is delivered to other chips in the board via control signals or I 2C communication. It handles all handshaking and power negotiation with the device and determines the power levels. USB-C PD chip: This chip interfaces with the USB-C connector and connects to an external USB-C PD device over a USB Type-C connector. ![]() The main components and their functionalities are: This article describes various ways to retrofit USB Type-C PD to an existing battery pack that has full capability to charge, discharge, protect and gauge. Vendors like Texas Instruments (TI), Cypress, Diodes Inc., ON Semi, and Analog Devices do offer ICs with the features needed to implement the complete solution. While some major IC manufacturers offer solutions, few offer complete packages where everything that’s required for a complete USB-C PD solution is contained within a single IC. This article presents solutions for adding USB Type-C PD to Li-ion battery packs. and eliminates the need to carry bulky power supplies. USB Type-C and PD provides a universal charging solution for devices such as laptops, phones, tablets, etc. In USB Type-C PD, the current can flow both ways from one device to another, with no set direction in the circuit, but purely depending on the devices communicating over the PD specification. USB Type-C PD combines the two technologies-high data transfer and high power-making it possible to quickly charge devices over a USB connection. This is made possible by allowing voltages up to 20 V and currents up to 5 A. Power Delivery (PD) is a specification that handles high power levels up to 100 W over USB. Universal Serial Bus Type-C (USB Type-C) provides high data-transfer rates and a reversible connector that the user can plug in without the need to check the orientation of a cable. ![]()
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