SNOU206 October   2024 LMG2640

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5. 1.5 General TI High Voltage Evaluation User Safety Guidelines
      1. 1.5.1 Safety and Precautions
  7. 2Hardware
    1. 2.1 LMG2640EVM-090 Daughter Card
      1. 2.1.1 Test Points
      2. 2.1.2 Integrated Current Sensing
      3. 2.1.3 Enable Pin
      4. 2.1.4 FAULT
      5. 2.1.5 Power Pins
      6. 2.1.6 Heat Sink
    2. 2.2 Motherboard
      1. 2.2.1 Bias Supply
      2. 2.2.2 PWM Input
      3. 2.2.3 Fault Protection
    3. 2.3 Recommended Footprint
    4. 2.4 Test Equipment
    5. 2.5 Test Procedure When Paired With LMG342X-BB-EVM
      1. 2.5.1 Setup
      2. 2.5.2 Start-Up and Operating Procedure
      3. 2.5.3 Test Results
      4. 2.5.4 Shutdown Procedure
      5. 2.5.5 Additional Operating Notes
  8. 3Hardware Design Files
    1. 3.1 LMG2640EVM-090 Schematic
    2. 3.2 Motherboard Schematic
    3. 3.3 PCB Layout
    4. 3.4 Bill of Materials
  9. 4Additional Information
    1. 4.1 Trademarks
  10. 5Related Documentation

2.4 Test Equipment

DC Voltage Source: Capable of supplying the input of the EVM up to 480 V.

DC Bias Source: Capable of 12V output up to 1.5A.

Function Generator: Capable of 0V to 5V square wave output with adjustable duty cycle and frequency in the operating range. TI recommends operating the LMG2640EVM-090 and mother boards with a switching frequency between 50kHz to 200kHz in hard-switching converters.

Oscilloscope: Capable of at least 200MHz operation. A 1GHz or greater oscilloscope and probes with short ground springs are required for accurate measurements.

DC Multimeters: Capable of 650V measurement, designed for determining operation and efficiency (if desired).

DC Load: Capable of 650V operation at up to 20A in current-mode operation.

Fan: For the heat-sink-version EVM daughter card, a dedicated cooling fan is attached on the back side of the heat sink. Please make sure the fan is powered by the 12V power supply before test.