SDAA468 August   2026 MSPM0G3107-Q1 , TPS388R0-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Detailed Description
    1. 2.1 Item definition
    2. 2.2 Assumptions
    3. 2.3 Hazard Analysis and Risk Assessment (HARA)
      1. 2.3.1 Safety Goal Definition
      2. 2.3.2 Safe State "Microcontroller Power-Cycle"
    4. 2.4 Functional Safety Concept
      1. 2.4.1 System Architecture
      2. 2.4.2 Safety Architecture
    5. 2.5 Technical Safety Concept
      1. 2.5.1 Device Description
        1. 2.5.1.1 MSPM0G3107-Q1
        2. 2.5.1.2 TPS388R0x-Q1
        3. 2.5.1.3 TPS3842C011-Q1
        4. 2.5.1.4 TPS22919-Q1
      2. 2.5.2 Implementation Details
        1. 2.5.2.1 Design Parameters
        2. 2.5.2.2 Overvoltage Protection Circuit (OVP)
        3. 2.5.2.3 Application Power Up and Power Down
        4. 2.5.2.4 TPS388R02-Q1 Software-less Operation
        5. 2.5.2.5 VCORE and VDD Monitoring
      3. 2.5.3 Monitoring Mechanisms
        1. 2.5.3.1 Monitoring VIN Supply Rail for OV Fault Including Protection
        2. 2.5.3.2 Monitoring MCU Supply Voltages for UV or OV Faults
        3. 2.5.3.3 Monitoring CPU processing Unit Program Flow
      4. 2.5.4 FMEA
        1. 2.5.4.1 Safety Mechanisms
          1. 2.5.4.1.1 SM1: MSPM0G3107-Q1 BIST and Software Test
          2. 2.5.4.1.2 SM2: TPS388R02-Q1 BIST and Internal Fault Detection
          3. 2.5.4.1.3 SM3: MSPM0G3107-Q1 VCORE Monitoring
          4. 2.5.4.1.4 SM4: MSPM0G3107-Q1 VDD Monitoring
          5. 2.5.4.1.5 SM5: Overvoltage Protection
    6. 2.6 Technical Safety Requirements
      1. 2.6.1 FMEDA for Safety Goal SG_01
        1. 2.6.1.1 Notes
      2. 2.6.2 Quantitative Results
  6. 3Summary
  7. 4References
2.5.4.1.4 SM4: MSPM0G3107-Q1 VDD Monitoring

The VDD supply rail of the MSPM0G3107-Q1 is continuously monitored by the TPS388R02-Q1 for UV/OV faults. This safety mechanism initiates a power cycle through TPS22919-Q1.

In addition, the MSPM0G3107-Q1 integrated Brown-Out Reset (BOR) circuit provides a secondary layer of protection by placing the MCU into reset if the VDD voltage falls below the defined threshold.