SLUUCE7 February   2021 UCC5870-Q1

 

  1.   Trademarks
  2. 1Description
    1. 1.1 Features
    2. 1.2 I/O Description
  3. 2Electrical Specifications
  4. 3Test Equipment, Setup and Example Waveforms
    1. 3.1 Equipment
      1. 3.1.1 Power Supplies
      2. 3.1.2 LaunchPad LAUNCHXL-F28379D and a Computer
    2. 3.2 Test Setup
      1. 3.2.1 DC Power Supply Settings
      2. 3.2.2 Bench Setup For The Test
    3. 3.3 Test Example Waveforms
  5. 4EVM Other Configuration Option: Using Other MCU Control Board
  6. 5Schematic
  7. 6Layout Diagrams
  8. 7Bill of Materials

3.3 Test Example Waveforms

After configuring and programming the gate drivers through the Launchpad and Code Composer Studio (CCS), the drivers will output PWMs. Figure 3-2 shows an example of 5kHz 50% duty cycle PWM waveforms for all channels. The example only captures Vge/Vgs waveforms for driver channels Ch1, Ch3, and Ch5, but the other three channels will have similar waveforms. Under this test condition, the 3.3V power supply outputs about 29mA current and 12V power supply outputs about 126mA current. Driver output high voltage is 15V and low voltage is -7.7V for all channels.

GUID-20201214-CA0I-024K-BXQ8-8FR0RVKJSMF3-low.svgFigure 3-2 Gate Waveforms for Driver Channels Ch1, Ch3, Ch5