TIDUET0A November   2019  – July 2020

 

  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 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 TPS61088-Q1
      2. 2.3.2 LMR33630-Q1
      3. 2.3.3 TPS7A2501
      4. 2.3.4 ATL431AIBDZR
    4. 2.4 System Design Theory
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware
    2. 3.2 Testing and Results
      1. 3.2.1 Test Setup
      2. 3.2.2 Test Results
  9. 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
  10. 5Related Documentation
    1. 5.1 Trademarks
    2. 5.2 Third-Party Products Disclaimer
  11. 6About the Author
  12. 7Revision History

Description

This is a backup power reference design for automotive eCall application. It uses one cell LiFePO4 as the backup battery. The minimum backup battery voltage can be down to 2 V with boost converter TPS61088-Q1. The boost converter TPS61088-Q1 can output 8 V/1.6A at 2 V input voltage. The value this has over the integrated solution competition is much better efficiency and less redundancy when boosting from the back-up battery.