TIDUF86A January   2025  – July 2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 System Overview
    3. 2.3 Highlighted Products
      1. 2.3.1 LMG3100
      2. 2.3.2 LMR38010
      3. 2.3.3 TMP61
      4. 2.3.4 TPS7B81
      5. 2.3.5 OPA4323
  9. 3System Design Theory
    1. 3.1 Power Stage Design: Three-Phase Inverter
    2. 3.2 LMG3100 GaN-FET Power Stage
    3. 3.3 Power Management
    4. 3.4 Current-Sensing Circuit
    5. 3.5 Overcurrent Protection Circuit
    6. 3.6 Phase Voltage and DC Input Voltage Sensing
    7. 3.7 Power-Stage PCB Temperature Monitor
    8. 3.8 Interface to Host MCU
  10. 4Hardware, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
      1. 4.1.1 TIDA-010276 PCB Overview
      2. 4.1.2 TIDA-010276 Jumper Settings
    2. 4.2 Test Setup
    3. 4.3 Test Results
      1. 4.3.1 Power Management and System Power Up and Power Down
      2. 4.3.2 GaN Inverter Switch Node Voltage
      3. 4.3.3 Switch Node Voltage Transient Response
      4. 4.3.4 Impact of PWM Frequency to DC-Bus Voltage Ripple
      5. 4.3.5 Efficiency Measurements
      6. 4.3.6 Thermal Analysis
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Tools and Software
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  12. 6About the Author
  13. 7Revision History

4.1.2 TIDA-010276 Jumper Settings

Table 4-3 shows the four TIDA-010276 jumpers.

Table 4-1 TIDA-010276 Jumper Settings
JUMPERFUNCTIONPOPULATEDNOT POPULATED
J1LDO SettingBypass LDO set the output to 5VDefault
J2LDO SettingConnect 1-2 disable LDO,
Connect 2-3 enable LDO		Connect 2-3 enable LDO
J1-J3, J2-J4Control
Connection		Connect with C2000 LaunchPadNot
Control signal
R82, R813.3V or 5V for LaunchPadSupply LaunchPadNot populated (default) LaunchPad uses own USB power
CAUTION:

Do not populate R82 and R81 at the same time. When R82 or R81 are populated, make sure the C2000 LaunchPad is not powered through USB. To accomplish this setup, remove the power supply jumpers on the F2800137 LaunchPad.

The TIDA-010276 interface specification is compliant to the TI BoosterPack plug-in module standard. The TIDA-010276 board can be connected to the C2000 LaunchPad headers J1–J4. Figure 4-3 shows the TIDA-010276 connected to the F2800137 LaunchPad headers J1–J4. The TIDA-010276 does not power the LaunchPad.

Connect the DC power supply (12V to 48V, 36V nominal) to the DC input voltage connector (MP1, MP3) and the three-phase motor to the three-phase output voltage connector (MP2, MP4, and MP5). Validate that the three-phase motor can handle the high slew rates of the phase voltages during PWM switching.


TIDA-010276 TIDA-010276 PCB Connections to C2000 LaunchPad™

Figure 4-3 TIDA-010276 PCB Connections to C2000 LaunchPad™