TIDUF64A December   2023  – August 2024

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
    2. 1.2 PV Input with Boost Converter
    3. 1.3 Bidirectional DC/DC Converter
    4. 1.4 DC/AC Converter
  8. 2System Design Theory
    1. 2.1 Boost Converter
      1. 2.1.1 Inductor Design
      2. 2.1.2 Rectifier Diode Selection
      3. 2.1.3 MPPT Operation
    2. 2.2 Bidirectional DC/DC Converter
      1. 2.2.1 Inductor Design
      2. 2.2.2 Low-Voltage Side Capacitor
      3. 2.2.3 High-Voltage Side Capacitor
    3. 2.3 DC/AC Converter
      1. 2.3.1 Boost Inductor Design
      2. 2.3.2 DC-Link Capacitor
  9. 3System Overview
    1. 3.1 Block Diagram
    2. 3.2 Design Considerations
      1. 3.2.1 Boost Converter
        1. 3.2.1.1 High-Frequency FETs
        2. 3.2.1.2 Input Voltage and Current Sense
      2. 3.2.2 Bidirectional DC/DC Converter
        1. 3.2.2.1 High-Frequency FETs
        2. 3.2.2.2 Current and Voltage Measurement
        3. 3.2.2.3 Input Relay
      3. 3.2.3 DC/AC Converter
        1. 3.2.3.1 High-Frequency FETs
        2. 3.2.3.2 Current Measurements
        3. 3.2.3.3 Voltage Measurements
        4. 3.2.3.4 Auxiliary Power Supply
        5. 3.2.3.5 Passive Components Selection
    3. 3.3 Highlighted Products
      1. 3.3.1  TMDSCNCD280039C - TMS320F280039C Evaluation Module C2000™ MCU controlCARD™
      2. 3.3.2  LMG3522R030 650-V 30-mΩ GaN FET With Integrated Driver, Protection and Temperature Reporting
      3. 3.3.3  TMCS1123 - Precision Hall-Effect Current Sensor
      4. 3.3.4  AMC1302 - Precision, ±50-mV Input, Reinforced Isolated Amplifier
      5. 3.3.5  ISO7741 Robust EMC, Quad-channel, 3 Forward, 1 Reverse, Reinforced Digital Isolator
      6. 3.3.6  ISO7762 Robust EMC, Six-Channel, 4 Forward, 2 Reverse, Reinforced Digital Isolator
      7. 3.3.7  UCC14131-Q1 Automotive, 1.5-W, 12-V to 15-V VIN, 12-V to 15-V VOUT, High-Density > 5-kVRMS Isolated DC/DC Module
      8. 3.3.8  ISOW1044 Low-Emissions, 5-kVRMS Isolated CAN FD Transceiver With Integrated DC/DC Power
      9. 3.3.9  ISOW1412 Low-Emissions, 500kbps, Reinforced Isolated RS-485, RS-422 Transceiver With Integrated Power
      10. 3.3.10 OPA4388 Quad, 10-MHz, CMOS, Zero-Drift, Zero-Crossover, True RRIO Precision Operational Amplifier
      11. 3.3.11 OPA2388 Dual, 10-MHz, CMOS, Zero-Drift, Zero-Crossover, True RRIO Precision Operational Amplifier
      12. 3.3.12 INA181 26-V Bidirectional 350-kHz Current-Sense Amplifier
  10. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
    2. 4.2 Note
    3. 4.3 Test Setup
      1. 4.3.1 Boost Stage
      2. 4.3.2 Bidirectional DC/DC Stage - Buck-Mode
      3. 4.3.3 DC/AC Stage
    4. 4.4 Test Results
      1. 4.4.1 Boost Converter
      2. 4.4.2 Bidirectional DC/DC Converter
        1. 4.4.2.1 Buck Mode
        2. 4.4.2.2 Boost Mode
      3. 4.4.3 DC/AC Converter
  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 Authors
  13. 7Revision History

4.3.3 DC/AC Stage

Note

If you have the E1 version of TIDA-010938 AC/DC board, to run the system in different modulation schemes, please make the following hardware changes:

  • HERIC
  1. Desolder R20, R22, R54, R56, R257, R269 and create a short each.
  • H-Bridge Bipolar
  1. Desolder R22, R56 and create a short each.
  2. Desolder R257 and create a short.
  3. Desolder R269 and connect R269-2 to R249-2.
  4. Desolder R20 and connect R20-2 to R243-2.
  5. Desolder R54 and connect R54-2 to R241-2.
  • H-Bridge Unipolar
  1. Desolder R22, R56 and create a short each.
  2. Desolder R257, R269 and create a short each.
  3. Desolder R35 and connect R35-2 with R249-2.
  4. Desolder R69 and connect R69-2 with R245-2.
  5. Desolder R20 and connect R20-2 to R243-2.
  6. Desolder R54 and connect R54-2 to R241-2.

If you have the E2 version of TIDA-010938 AC/DC board, to run the system in different modulation schemes, please make the following hardware changes:

  • HERIC
  1. Connect Jumpers J22, J23, J24, J25 and J26.
  • H-Bridge Bipolar
  1. Connect Jumpers J4, J5, J13, J21 and J22.
  • H-Bridge Unipolar
  1. Connect Jumpers J4, J5, J13, J14 and J20.

For the changes in software, please follow the software user guide.

Figure 4-4 shows the connection for the boards. For safety reasons make sure that the proper voltage and current limit is selected on DC power source and the AC Grid simulator. DC source needs to be configured in constant voltage mode with the required voltage and current limits. The DC bus of the DC/DC board is connected to that of DC/AC board, and so are the connectors for the control signals. The bidirectional AC Grid Simulator is configured with the approproate voltage, frequency and current settings.

TIDA-010938 Connections for Testing DC/ACFigure 4-4 Connections for Testing DC/AC