SLVUDO3B March   2026  – October 2026

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Test Setup
    2. 2.2 Modification
    3. 2.3 Input Capacitor C3
  7. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  8. 4Additional Information
    1. 4.1 Trademarks
  9. 5Revision History

1.4 Device Information

The TPS61129-Q1 is a low voltage, synchronous boost converter with a 125mΩ low side power switch and a 145mΩ high side rectifier switch to provide a high-efficiency and compact design. The TPS61129-Q1 has a 3.5A (typical) peak switch current limit and employs peak current mode control with a fixed switching frequency 2.2MHz. The TPS61129-Q1 has a wide input voltage range of 0.9V to 5.5V and the output voltage range is from 2.6V to 5.5V and supports selectable auto PFM, forced PWM mode, or synchronization to an external clock. In addition, the TPS61129-Q1 has output overvoltage protection and overcurrent protection to prevent the device from overheating. The TPS61129-Q1 is intended for portable equipment and smart devices powered by batteries or other low-voltage power sources. The TPS61129-Q1 uses the spread spectrum of the internal clock to improve EMI performance in FPWM mode. There is an internal soft-start time to limit the inrush current.