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  • TPS257xx-Q1 System Power Management

    • SLVAFG6B December   2022  – November 2024 TPS25762-Q1 , TPS25763-Q1 , TPS25772-Q1

       

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  • TPS257xx-Q1 System Power Management
  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Terms and Abbreviations
  5. 2 SPM Engine Overview
  6. 3Multi-Port Power Allocation Policy
    1. 3.1 Assured Capacity Policy
    2. 3.2 Shared Capacity Policy
      1. 3.2.1 Fair Share Power Policy
        1. 3.2.1.1 Blind Sink Support
    3. 3.3 Hybrid Mode
  7. 4Power Foldback Policy
    1. 4.1 Thermal Foldback Operation
    2. 4.2 Engine On/Off Transition Management
      1. 4.2.1 Engine On/Off Power Foldback Operation Example
  8. 5Multi-Port Power Allocation Policy Examples
    1. 5.1 Assured Capacity Policy Example
    2. 5.2 Fair Share Power Policy Example
      1. 5.2.1 FSP Policy Example – Blind Sink Support
      2. 5.2.2 FSP Policy Example – Blind Sink Support With Max Power
    3. 5.3 Hybrid Mode Example
  9. 6References
  10. 7Revision History
  11. IMPORTANT NOTICE
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Application Note

TPS257xx-Q1 System Power Management

Abstract

The USB Type-C® and Power Delivery (PD) specification has expanded the capability of USB ports including support for higher power delivery over USB connection. With the widespread adoption of USB Type-C and PD applications and portable devices that can charge over USB, it has become increasingly important for single or multi-port charger systems to intelligently manage power schemes for reliable and safe operation.

This application note describes how the TPS2576x-Q1 and TPS2577x-Q1 family of USB Type-C PD controllers enable power delivery over USB for robust and reliable system operation using the System Power Management (SPM) Engine.

Trademarks

USB Type-C® is a registered trademark of USB Implementers Forum.

All trademarks are the property of their respective owners.

1 Introduction

The TPS2576x-Q1 and TPS2577x-Q1 devices belong to a family of USB Type-C PD controllers for use in single or multi-port charging or data USB system applications. The TPS2576x-Q1 and TPS2577x-Q1 family supports an integrated System Power Management (SPM) Engine that manages multi-port power allocation policies (in the case of the TPS25772-Q1 dual-port PD controller) and dynamically adjusts USB port power based on events such as these: Connect or disconnect of a Sink device and its Sink Capabilities, thermal events measured through an external thermistor or temperature sensor, and engine status detected through a change in input supply voltage.

 
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