SLVUD94 September   2025

 

  1.   1
  2. 1Description
  3. 2Features
  4. 34
  5. 3Evaluation Module Overview
    1. 3.1 Introduction
    2. 3.2 Kit Contents
    3. 3.3 Specifications
    4. 3.4 Device Information
  6. 4Hardware
    1. 4.1 Definitions
    2. 4.2 Equipment
      1. 4.2.1 Power Supply
      2. 4.2.2 Function Generator
      3. 4.2.3 DMM
      4. 4.2.4 Oscilloscope
    3. 4.3 Connection Descriptions
  7. 5Implementation Results
    1. 5.1 Evaluation Setup
      1. 5.1.1 DC Power Supply Settings
      2. 5.1.2 Digital Multi-Meter Settings
      3. 5.1.3 Two-Channel Function Generator Settings
      4. 5.1.4 Oscilloscope Settings
      5. 5.1.5 Bench Setup Diagram
    2. 5.2 External Bootstrap Diode
    3. 5.3 Power Up and Power Down Procedure
      1. 5.3.1 Power Up
      2. 5.3.2 Power Down
    4. 5.4 Typical Performance Waveforms (CL = 1000pF)
      1. 5.4.1 Propagation Delays
  8. 6Hardware Design Files
    1. 6.1 Schematic
    2. 6.2 PCB Layouts
    3. 6.3 Bill of Materials (BOM)
  9. 7Additional Information
    1. 7.1 Trademarks

5.3.1 Power Up

  1. Before beginning the power up test procedure, verify the connections with Figure 5-1.
  2. Enable supply #1, if the current on DMM1 is more than 0.20mA and less than 0.71mA, everything is set correctly.
  3. Enable function generator outputs channel-A and channel-B.
  4. The following conditions should be present:
    1. Stable pulse output on channel-1 and channel-2 in the oscilloscope, refer to Figure 5-2
    2. Frequency measurement should be 100kHz, ±5kHz or equal to the programmed function generator frequency
    3. DMM #1 should display around 3.5mA, ±1mA with the default load capacitance of 1.0nF. For more information about operating current, refer to UCC2773x Data Sheet and UCC2773x-Q1 Data Sheet.
  5. Connect ENA_IN test point to GND test point with Jumper J1. The pulse outputs on channel-1 and channel-2 will cease operation and the voltage level should be near ground.
UCC27735Q1EVM Example Input and Output Waveforms (Green and Magenta are PWM Inputs, Yellow and Blue are Driver Outputs)Figure 5-2 Example Input and Output Waveforms (Green and Magenta are PWM Inputs, Yellow and Blue are Driver Outputs)