TIDT347A November   2023  – October 2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Dimensions
    5. 1.5 Test Setup
  6. 2Testing and Results
    1. 2.1 Efficiency Data
    2. 2.2 Efficiency Graphs
    3. 2.3 Thermal Images
  7. 3Waveforms
    1. 3.1 Charging Waveform
    2. 3.2 Switching Waveform
    3. 3.3 Short-Circuit Protection
  8.   Trademarks

Description

This reference design is an integrated USB Type-C® and USB 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 USB 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.