SNVU822 May   2022

 

  1.   Trademarks
  2. 1Introduction
  3. 2Warnings and Cautions
  4. 3Description
    1. 3.1 Typical Applications
    2. 3.2 Features
    3. 3.3 Connector and Test Point Description
    4. 3.4 Electrical Performance Specifications
  5. 4Test Setup
    1. 4.1 Input Supplies and LED Load Connections
    2. 4.2 Analog Duty Cycle Control Using APWM
    3. 4.3 Analog Dimming Using IADJ
    4. 4.4 PWM Dimming Using nExt_PWM Test Points
    5. 4.5 Switching Frequency Set Point Using RON
  6. 5Performance Data and Typical Characteristic Curves
    1. 5.1 Efficiency
    2. 5.2 Analog Dimming
    3. 5.3 PWM Dimming
    4. 5.4 PWM Dimming Waveforms
  7. 6Schematic
  8. 7TPS92643EVM-204 PCB Layout
  9. 8Bill of Materials

1 Introduction

The TPS92643EVM-204 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS92643-Q1 3.0-A buck switching regulator designed for high-current LED drive applications. The TPS92643-Q1 is designed to control high-brightness light-emitting diodes (LED) and features a wide input voltage range (5.5 V to 40 V), PWM dimming capability, analog dimming capability, input undervoltage lockout protection, fault detection, an internal 5-V regulator, and the ability to perform duty cycle control of the on-board, 1.6-kHz PMW signal.