SNVU821 November   2023 TPS92642-Q1

 

  1.   1
  2.   TPS92642EVM-203 5-A Synchronous Buck IR LED Driver Evaluation Module
  3.   Trademarks
  4. 1Introduction
  5. 2Warnings and Cautions
  6. 3Description
    1. 3.1 Typical Applications
    2. 3.2 Features
    3. 3.3 Connector and Test Point Description
    4. 3.4 Electrical Performance Specifications
  7. 4Test Setup
    1. 4.1 Input Supplies and LED Load Connections
    2. 4.2 Pulse Duty Cycle Limit (PLMT) Control
    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
  8. 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
  9. 6Schematic
  10. 7PCB Layout
  11. 8Bill of Materials

4.1 Input Supplies and LED Load Connections

The LEDs are to be connected, as shown in Figure 4-2, where the anode of the LEDs are to be connected to VOUT+ test points or through J1 or VOUT+ (TP1) and the cathode of the LEDs to GND (TP7). The input power supply can be connected by header J2 using a harness or by VIN (TP2) and GND (TP7) using test cables.

GUID-20230911-SS0I-28PC-R3K3-LLJ52SJ8P609-low.svgFigure 4-2 VIN and VOUT+ (LED) Connections