TIDUD04A June   2017  – August 2021

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
    1. 1.1 Key System Specifications
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Highlighted Products
      1. 2.2.1 CSD19536KCS
      2. 2.2.2 UCC27211A
      3. 2.2.3 SN6505B
      4. 2.2.4 OPA376
      5. 2.2.5 LM4041-N
      6. 2.2.6 TIDA-01281
      7. 2.2.7 TIDA-01141
      8. 2.2.8 TIDA-01159
    3. 2.3 System Design Theory
      1. 2.3.1 Boost Mode
        1. 2.3.1.1 Topology Description
        2. 2.3.1.2 Boost Mode Working: Active Clamp
        3. 2.3.1.3 Boost Mode Working: Cold Start
        4. 2.3.1.4 Current-Fed Inductor Calculation
        5. 2.3.1.5 Transformer Calculation
        6. 2.3.1.6 Low-Side Current Sensing Circuit
        7. 2.3.1.7 Isolated Voltage Sensing
  8. 3Getting Started Hardware
    1. 3.1 Hardware
    2. 3.2 Test Setup
    3. 3.3 Test Equipment Needed to Validate Board
    4. 3.4 Test Procedure
  9. 4Testing and Results
    1. 4.1  Boost Mode Hard Start at 36-V Battery Voltage
    2. 4.2  Boost Mode Hard Start at 60-V Battery Voltage
    3. 4.3  Boost Mode ZVS Waveform
    4. 4.4  Active Clamp Working Waveform
    5. 4.5  Buck Mode Working Waveform
    6. 4.6  Buck-to-Boost Mode Transition Waveform
    7. 4.7  Cold Start Waveform
    8. 4.8  Boost Mode Efficiency
    9. 4.9  Buck Mode Efficiency
    10. 4.10 Thermal Images
  10. 5Design Files
    1. 5.1 Schematics
    2. 5.2 Bill of Materials
    3. 5.3 PCB Layout Recommendations
      1. 5.3.1 Layout Prints
    4. 5.4 Altium Project
    5. 5.5 Gerber Files
    6. 5.6 Assembly Drawings
  11. 6Related Documentation
    1. 6.1 Trademarks
  12. 7About the Authors
  13. 8Revision History

Description

The TIDA-00951 design provides a reference solution for a 2-kW isolated bidirectional DC-DC converter capable of power transfer between a 400-V DC bus and a 12- to 14-cell Lithium battery pack for use in UPS, battery backup and power storage applications.

This TI Design works as a >93% efficient, current fed, active clamped boost converter with ZVS in the backup mode and voltage fed full-bridge batter charger with >93% efficiency in the charging mode. This TI Design has built-in protection for DC bus overcurrent and overvoltage and battery overcurrent.