C2000Ware Digital Power SDK  5.03.00.00
TIDM-02002 - Bi-Directional CLLLC Resonant Dual Active Bridge (DAB) for HEV/EV Onboard Charger

Table of Contents

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Target Applications

  • On Board Chargers for EV
  • Off Board Chargers
  • Grid Storage

Features & Specification

  • Vprim: 380-600V DC , Vsec: 280-450V DC
  • Power Max: 6.6kW, 97.98% peak efficiency
  • Bi-directional power flow
  • CLLLC resonant tank with 500kHz nominal PWM switching, (300kHz-700kHz range) and planar magnetics enable reduced transformer size and higher power density
  • Soft Switching with Zero Voltage Switching (ZVS) on the primary, Zero Current Switching (ZCS) & ZVS on the secondary enables higher efficiency
  • Active synchronous rectification scheme implementation using Rogowski coil sensor enables higher efficiency
  • integrated OBC design with AC-DC and DC-DC controlled using a single C2000 MCU.

Description

CLLLC resonant dual active bridge with bi-directional power flow capability and soft switching characteristics such as Zero Current Switching (ZCS) and Zero Voltage Switching (ZVS) is an ideal candidate for HEV/EV on-board chargers and energy storage applications.

This design illustrates a method to control this power stage using a C2000™ TMS320F280049C real-time MCU.

TIDM-02002 EVM Board
TIDM-02002 System Block Diagram

Relevant Links

Useful links regarding the reference design are provided below:

Note
To import and evaulate CCS project using the button above, please access the current page via Resource Explorer from Code Composer Studio (CCS), or CCS Cloud. (go to CCS->View->Resource Explorer)

Steps to Run the Example

  • It's strongly recommended to first read through the User Guide/Software Guide for any specific setup instructions and hazard warnings before proceeding.
  • To import CCS projects, either import via the button above or mannually select the file directory where this solutions resides.
  • Build the project within the CCS project menu, then launch a CCS debug session and run the executable.

Release Notes

Shown below lists all the software revision history for this reference design:

Software Version SDK Release Changelog
v1.00.00 1.03.00.00 First release, on F28004x devices in C2000Ware Digital Power SDK
v1.01.00 2.00.00.00 Features & Enhancements:
  • Added labs for reverse power flow and adjusted lab numbers
v2.00.00 3.00.00.00 Changes & Enhancements:
  • Changes due to powerSUITE GUI update which is now based in sysconfig
  • Ported and changed project setting from COFF to EABI
v2.00.01 3.01.00.00 Changes & Enhancements:
  • Changes to support operation without an emulator attached:
    • Added “–entry_point code_start” option to the linker settings in the CCS project.
    • Disabled watchdog in the f28004x_codestartbranch.asm file
    • Updated linker command file to place FPUmathtables in FLASH and SFRA libray into RAM.
v2.00.02 3.02.00.00 Changes & Enhancements:
  • Add support for legacy driverlib macros
  • Changed compiler version (from v18.12.5.LTS to v20.2.1.LTS)
v2.00.03 4.00.00.00 Changes & Enhancements:
  • Add support for source-lookup path for driverlib
  • Changed compiler version (from v20.2.1.LTS to v21.6.0.LTS)
v2.00.04 4.03.00.00 Changes & Enhancements:
  • Software updates to device.c, device.h, driverlib.h to account for changes in C2000Ware
  • Projectspec updates to account for changes to Kit.json output from sysconfig tool
  • Changed compiler version (from v21.6.0.LTS to v22.6.0.LTS)
v2.00.05 4.03.01.00 Bugfix & Enhancements:
  • Update to device.h to fix typo in PLLSYSCLK definition

Hardware design files

For EVM design files such as schematics, BOM, PCB layouts & assembly files, please visit TI design webpage from the link above.

Help and Support

For additional help and support, please visit TI E2E™ design support forums