SLVAF46A May   2021  – January 2023 TPS65988


  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Integrated USB Wall Socket Design
    1. 2.1 Thermal Considerations
    2. 2.2 Dynamic Port Power Balancing
    3. 2.3 GPIO Events
    4. 2.4 Control Logic Implementation with GPIO Events
    5. 2.5 GUI Configuration
    6. 2.6 Test Setup and Results
  5. 3References
  6. 4Revision History


Higher power and wider compatibility with the battery powered devices makes a Type-C PD power port the preferred choice of today’s gadget lovers. Consequently, integrated Type-C PD wall sockets are gaining more popularity than the Type-A integrated wall sockets at a faster rate. Why TI’s highly configurable and integrated PD controller TPS65988DH is an integral part of your next Type-C/ PD design is the topic of this application note. With the highly flexible GPIO event feature, TI PD controller can implement the control logic required for power balancing between the ports and function as a complete standalone solution. This feature allows for an otherwise mandatory MCU (Microcontroller unit) to be removed from the system, alleviating firmware development and system complexity. This application note walks through how GPIO event feature has been utilized to implement power balancing between the ports. This feature is beneficial when designing end equipments like smart plugs, multi-port adapters, avionics seat backs, and other multi-port source-only applications using TI’s highly configurable PD controller.

This application note also covers step by step instructions on GUI configuration for implementing the control logic required for power balancing. The example project file available with this application note can be used for testing the control logic on TPS65988EVM.