SPRAD12A July   2022  – February 2023 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280033 , TMS320F280034 , TMS320F280034-Q1 , TMS320F280036-Q1 , TMS320F280036C-Q1 , TMS320F280037 , TMS320F280037-Q1 , TMS320F280037C , TMS320F280037C-Q1 , TMS320F280038-Q1 , TMS320F280038C-Q1 , TMS320F280039 , TMS320F280039-Q1 , TMS320F280039C , TMS320F280039C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1 , TMS320F28075 , TMS320F28075-Q1 , TMS320F28076 , TMS320F28374D , TMS320F28374S , TMS320F28375D , TMS320F28375S , TMS320F28375S-Q1 , TMS320F28376D , TMS320F28376S , TMS320F28377D , TMS320F28377D-EP , TMS320F28377D-Q1 , TMS320F28377S , TMS320F28377S-Q1 , TMS320F28378D , TMS320F28378S , TMS320F28379D , TMS320F28379D-Q1 , TMS320F28379S , TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S , TMS320F28P550SJ , TMS320F28P559SJ-Q1 , TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1 Introduction
  4. 2 SysConfig
  5. 3 Time-Base (TB) Submodule
    1. 3.1 Setting the Frequency
    2. 3.2 Applying a Phase Shift
    3. 3.3 Setting up the Synchronization (Sync) Scheme
  6. 4 Counter-Compare (CC) and Action-Qualifier (AQ) Submodules
    1. 4.1 Calculating the Duty Cycle
  7. 5 Deadband (DB) Submodule
    1. 5.1 Setting up Signal Pairs
  8. 6 Verifying the Output
    1. 6.1 Checking the Duty Cycle and Dead-Time Insertion
    2. 6.2 Checking the Phase Shift Applied
  9. 7 Trip-Zone (TZ) and Digital Compare (DC) Submodules
    1. 7.1 Drive Outputs Low for an ePWM Cycle Upon Trip Condition Set Through CMPSS
    2. 7.2 Drive Outputs Low Until Cleared Through Software Upon Trip Condition set Through GPIO
  10. 8 Event-Trigger (ET) Submodule
    1. 8.1 Setting Up Time-Base Interrupts
  11. 9 Global Load
    1. 9.1 Applying Global Loading and One-Shot Load Feature
    2. 9.2 Linking the ePWM Modules
    3. 9.3 Updating Action Qualifier Settings and Counter Compare Values Through Global Loading
  12. 10Summary
  13. 11References
  14. 12Revision History

Abstract

The enhanced pulse width modulator (ePWM) peripheral is a key element in controlling many of the power electronic systems found in both industrial and automotive applications. C2000™ real-time microcontrollers offer many differentiated features within the ePWM peripheral that allow for advanced control techniques. This application note focuses on an application use-case described within the introduction, demonstrating each of the features of the ePWM along with how to use SysConfig system configuration tool to set-up and program the desired outputs. SysConfig is a tool that exists integrated in Code Composer Studio™ (CCS) or as a standalone program that allows you to generate C header and code files using a graphical user interface (GUI). This application note was done using the TMS320F28388D device. However, the content in this application note is applicable to all devices with a Type-4 ePWM module. For more information on peripheral types, see the C2000 Real-Time Control MCU Peripherals Guide.
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