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

4.1 Input Supplies and LED Load Connections

The default configuration for this EVM is that both VIN1 and VIN2 are shorted together by R20. This configuration allows for a simpler connection. However, if two separate supplies are desired, then R20 must be removed and individual supplies must be connected either by the VIN1 (TP14) and VIN2 (TP6) turrets or through J3 and J4 connectors.

The LEDs are to be connected, as show in Figure 4-2, where the anode of the LEDs are to be connected to LED1+ and LED2+ test points or through J3 or J4.

V5D and V5A are tied together through R10. An external 5-V supply must be attached to the 5-V test point (TP7) to supply the TPS92519.

Figure 4-2 V5D, VINx and LEDx Connections