SFFS169A April   2022  – May 2022 TPS3704 , TPS3704-Q1


  1. 1Introduction
    1.     Trademarks
  2. 2 TPS3704x-Q1 Hardware Component Functional Safety Capability
  3. 3Development Process for Management of Systematic Faults
    1. 3.1 TI New-Product Development Process
    2. 3.2 TI Functional Safety Development Process
  4. 4 TPS3704x-Q1 Component Overview
    1. 4.1 Targeted Applications
    2. 4.2 Hardware Component Functional Safety Concept
    3. 4.3 Functional Safety Constraints and Assumptions
  5. 5Description of Hardware Component Parts
  6. 6 TPS3704x-Q1 Management of Random Faults
    1. 6.1 Fault Reporting
    2. 6.2 Functional Safety Mechanism Categories
    3. 6.3 Description of Functional Safety Mechanisms
      1.      A Summary of Recommended Functional Safety Mechanism Usage
        1.       B Distributed Developments
          1.        B.1 How the Functional Safety Lifecycle Applies to TI Functional Safety Products
          2.        B.2 Activities Performed by Texas Instruments
          3.        B.3 Information Provided
            1.         C Revision History


This document is a functional safety manual for the Texas Instruments TPS3704x-Q1 component. The specific orderable part numbers supported by this functional safety manual are as shown in the device naming convention. For non automotive grade parts remove the -Q1 from the device name.

Figure 1-1 Device Naming Convention

This functional safety manual provides information needed by system developers to help in the creation of a functional safety system using a TPS3704x-Q1 component. This document includes:

  • An overview of the component architecture
  • An overview of the development process used to decrease the probability of systematic failures
  • An overview of the functional safety architecture for management of random failures
  • The details of architecture partitions and implemented functional safety mechanisms

The following information is documented in the TPS3704x-Q1 Functional Safety Analysis Report and is not repeated in this document:

  • Summary of failure rates (FIT) of the component
  • Summary of functional safety metrics of the hardware component for targeted standards (for example IEC 61508, ISO 26262, and so forth)
  • Quantitative functional safety analysis (also known as FMEDA, Failure Modes, Effects, and Diagnostics Analysis) with detail of the different parts of the component, allowing for customized application of functional safety mechanisms
  • Assumptions used in the calculation of functional safety metrics

The following information is documented in the TPS3704x-Q1 Functional Safety Report, and is not repeated in this document:

  • Results of assessments of compliance to targeted standards

The user of this document should have a general familiarity with the TPS3704x-Q1 component. For more information, refer to the TPS3704x-Q1 data sheet. This document is intended to be used in conjunction with the pertinent data sheets, technical reference manuals, and other component documentation.

For information that is beyond the scope of the listed deliverables, contact your TI sales representative or go to https://www.ti.com/technologies/functional-safety/overview.html.