TIDT347 November 2023
This reference design is an integrated USB Type-C® power delivery (PD) and charging reference design for 4- to 10-cell batteries for applications such as power tools charger with USB Type-C port, vacuum cleaner, portable power station, and more.
The design incorporates the TPS25751, a USB Type-C and PD controller, which integrates a fully-managed robust power path switch inside to reduce size and external components. The design is easy to configure the power specification depending on the user’s application through a web-based GUI, thus reducing the design complexity. The PD controller works with the external battery charger controller BQ25756 through I2C communication. The BQ25756 supports a wide-range input with four-switch, buck-boost configuration, and supports seamless transition from buck, boost, and buck-boost operation mode to provide a highly-efficient, highly-accurate and reliable charger design. This reference design supports charging batteries with a maximum of 100 W through a USB PD3.0-compatible input source. The high integration and simple design lowers BOM cost, provides a smaller size, and reduces time to market.