SDAA370 May   2026 UCC34141

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 End-Equipment Traction Inverter
    2. 1.2 Why is Safety Needed in Inverter?
    3. 1.3 FuSa Development Flow
      1. 1.3.1 V-Model Development
      2. 1.3.2 Inverter Safety Lifecycle
  5. 2FuSa Requirements for Traction Inverter
    1. 2.1 Traction Inverter Structure and Function Introduction
    2. 2.2 FuSa Requirements Derivation Process
    3. 2.3 Safety Goal
    4. 2.4 FuSa Concept
      1. 2.4.1 FSC Design Architecture
      2. 2.4.2 Fault Tree Analysis
      3. 2.4.3 FuSa Requirement
    5. 2.5 Technical Safety Concepts
      1. 2.5.1 TSC Design Architecture
      2. 2.5.2 Failure Mode and Effect Analysis
      3. 2.5.3 Technical Safety Requirements
  6. 3Safety Design Implementation on Inverter
    1. 3.1 TI FuSa Product
    2. 3.2 How Does TSR Implement?
      1. 3.2.1 Position Sensor
      2. 3.2.2 MCU
      3. 3.2.3 Logic Circuit
      4. 3.2.4 Smart Isolated Gate Driver
    3. 3.3 Dependent Failure Consideration
    4. 3.4 Detailed FuSa Design Structure for Traction Inverter
    5. 3.5 Achieving FuSa Requirements with TI Safety Devices
      1. 3.5.1 MCU
      2. 3.5.2 Gate Driver
        1. 3.5.2.1 Gate Monitor Circuit and Over Current Protection
        2. 3.5.2.2 Other Safety Mechanisms in UCC5881-Q1
      3. 3.5.3 Isolated bias supply
        1. 3.5.3.1 Centralized LV Isolated Power Supply Architecture
        2. 3.5.3.2 Fully Distributed LV Isolated Power Supply Architecture
        3. 3.5.3.3 Semi-Distributed LV Isolated Power Supply Architecture
        4. 3.5.3.4 HV Isolated Bias Supply
        5. 3.5.3.5 TI's Design for Isolated Bias Supply in Traction Inverter
      4. 3.5.4 Power Management IC
        1. 3.5.4.1 Multiple Paths Power Rail with Protection and Independent Thermal Shut-Down
        2. 3.5.4.2 Power Rail Voltage Monitoring
        3. 3.5.4.3 MCU Fault Monitor and other Protection Mechanisms
      5. 3.5.5 Position Sensor
      6. 3.5.6 Current Sensor
      7. 3.5.7 Voltage Sensor
        1. 3.5.7.1 Isolated DC Voltage Sensing
        2. 3.5.7.2 Non-Isolated DC voltage sensing
      8. 3.5.8 Temperature Sensor
  7. 4Summary
  8. 5References

3.2 How Does TSR Implement?

Taking the TSR in section 2.5.3 as an example, this part shows the TSR implementation with position sensor output failure based on TI safety position sensor AFE LDC5072/3-Q1, safety MCU F29H859-Q1, smart gate driver UCC5881-Q1, and TI programmable logic device TPLD1201-Q1. Figure 3-4 shows the detailed safety path with the related devices.

Safety Path Regarding TSR on Position Sensor Output Failure Figure 3-4 Safety Path Regarding TSR on Position Sensor Output Failure