TIDUE53J March   2018  – February 2025 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1

 

  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 Highlighted Products
      1. 2.2.1  UCC21710
      2. 2.2.2  UCC5350
      3. 2.2.3  TMS320F28379D
      4. 2.2.4  AMC3306M05
      5. 2.2.5  OPA4388
      6. 2.2.6  TMCS1123
      7. 2.2.7  AMC0330R
      8. 2.2.8  AMC0381D
      9. 2.2.9  UCC14341
      10. 2.2.10 UCC33421
    3. 2.3 System Design Theory
      1. 2.3.1 Three-Phase T-Type Inverter
        1. 2.3.1.1 Architecture Overview
        2. 2.3.1.2 LCL Filter Design
        3. 2.3.1.3 Inductor Design
        4. 2.3.1.4 SiC MOSFETs Selection
        5. 2.3.1.5 Loss Estimations
      2. 2.3.2 Voltage Sensing
      3. 2.3.3 Current Sensing
      4. 2.3.4 System Auxiliary Power Supply
      5. 2.3.5 Gate Drivers
        1. 2.3.5.1 1200-V SiC MOSFETs
        2. 2.3.5.2 650-V SiC MOSFETs
        3. 2.3.5.3 Gate Driver Bias Supply
      6. 2.3.6 Control Design
        1. 2.3.6.1 Current Loop Design
        2. 2.3.6.2 PFC DC Bus Voltage Regulation Loop Design
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware
        1. 3.1.1.1 Test Hardware Required
        2. 3.1.1.2 Microcontroller Resources Used on the Design (TMS320F28379D)
        3. 3.1.1.3 F28377D, F28379D Control-Card Settings
        4. 3.1.1.4 Microcontroller Resources Used on the Design (TMS320F280039C)
      2. 3.1.2 Software
        1. 3.1.2.1 Getting Started With Firmware
          1. 3.1.2.1.1 Opening the CCS project
          2. 3.1.2.1.2 Digital Power SDK Software Architecture
          3. 3.1.2.1.3 Interrupts and Lab Structure
          4. 3.1.2.1.4 Building, Loading, and Debugging the Firmware
          5. 3.1.2.1.5 CPU Loading
        2. 3.1.2.2 Protection Scheme
        3. 3.1.2.3 PWM Switching Scheme
        4. 3.1.2.4 ADC Loading
    2. 3.2 Testing and Results
      1. 3.2.1 Lab 1
      2. 3.2.2 Testing Inverter Operation
        1. 3.2.2.1 Lab 2
        2. 3.2.2.2 Lab 3
        3. 3.2.2.3 Lab 4
      3. 3.2.3 Testing PFC Operation
        1. 3.2.3.1 Lab 5
        2. 3.2.3.2 Lab 6
        3. 3.2.3.3 Lab 7
      4. 3.2.4 Test Setup for Efficiency
      5. 3.2.5 Test Results
        1. 3.2.5.1 PFC Mode
          1. 3.2.5.1.1 PFC Start-Up – 230 VRMS, 400 VL-L AC Voltage
          2. 3.2.5.1.2 Steady State Results - PFC Mode
          3. 3.2.5.1.3 Efficiency, THD, and Power Factor Results, 60 Hz – PFC Mode
          4. 3.2.5.1.4 Transient Test With Step Load Change
        2. 3.2.5.2 Inverter Mode
  10. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout Recommendations
      1. 4.3.1 Layout Prints
    4. 4.4 Altium Project
    5. 4.5 Gerber Files
    6. 4.6 Assembly Drawings
  11. 5Trademarks
  12. 6About the Authors
  13. 7Revision History
3.2.5.1.2 Steady State Results - PFC Mode

Figure 3-38 shows the steady state performance of PFC at 120 VRMS and 4.5kW output power.

TIDA-01606 120 VRMS PFC Results at Steady State - 4.5 kW
Scope signals: Channel 1 - VDC at output (blue), Channel 4 - AC input phase voltage VLN (green),
Channel 3 - AC input current (red). The voltage probes are scaled down at 500:1.
Figure 3-38 120 VRMS PFC Results at Steady State - 4.5 kW

Figure 3-39 shows the steady state performance of PFC at 230 VRMS input and 4.5-kW output power.

TIDA-01606 230 VRMS PFC Waveforms at Steady State - 4.5 kW
Scope signals: Channel 1 - VDC at output (blue), Channel 4 - AC input phase voltage VLN (green),
Channel 3 - AC input current (red). The voltage probes are scaled down at 500:1.
Figure 3-39 230 VRMS PFC Waveforms at Steady State - 4.5 kW