SLUUCI5A July   2021  – November 2021 TPS92519-Q1

 

  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 Switching Frequency Selection
    3. 4.3 Analog Dimming Using IADJx
    4. 4.4 PWM Dimming Using UDIMx and PWM Test Points
  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. 7TPS92519EVM-169 PCB Layout
  9. 8Bill of Materials
  10. 9Revision History

3 Description

This user's guide describes the specifications, board connection descriptions, characteristics, operation, and use of the TPS92519-Q1, dual 2.0-A synchronous buck LED driver evaluation module (TPS92519EVM-169). The TPS92519-Q1 device implements an adaptive on-time average current mode control and is designed to be compatible with shunt FET dimming techniques and LED matrix manager-based dynamic beam headlamps. The adaptive on-time control provides near constant switching frequency that can be set to 385/435 kHz or 2/2.1 MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input voltage, output voltage and ambient temperature range.

TPS92519EVM-169 provides a high-brightness LED driver that is designed to operate with an input voltage in the range of 5.5 V to 65 V. The EVM is set up for a default output current of 2 A for an LED stack between approximately 3 V and nearly 60 V operating at 385/435 kHz. The TPS92519-Q1 helps provide high efficiency, fast PWM dimming, and accurate wide-range analog dimming.