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

2 Warnings and Cautions

Observe the following precautions when using the TPS92642EVM-203.

CAUTION:
GUID-61B51012-44B1-4DA9-890F-BFC55A0856B4-low.gif
Caution! Do not leave EVM powered when unattended.
HOT SURFACE:
GUID-59DF0BF7-CFE1-46FD-9180-F88A43098858-low.gif
Caution Hot Surface! Contact may cause burns. Do not touch. Please take the proper
precautions when operating.
WARNING:

GUID-8B6D3715-B74E-4427-BB04-DA9B46DF8187-low.gif When choosing your LED component (not included with this EVM), the end user must consult the LED data sheet supplied by the LED manufacturer to identify the EN62471 Risk Group Rating and review any potential eye hazards associated with the LED chosen. Always consider and implement the use of effective light filtering and darkening protective eye wear and be fully aware of surrounding laboratory-type set-ups when viewing intense light sources that can be required to minimize or eliminate such risks in order to avoid accidents related to temporary blindness.