SFFS422 May   2022

 

  1.   Trademarks
  2.   2
  3. 1Scope
  4. 2Related Documents
  5. 3Related Standards and Acronyms
  6. 4Concept Overview
    1. 4.1 System Block Diagram
    2. 4.2 System Specifications
    3. 4.3 Conditions of use: Assumptions
      1. 4.3.1 Generic Assumptions
      2. 4.3.2 Specific Assumptions
    4. 4.4 Safe Torque Off Implementation
      1. 4.4.1 Subsystem Elements
      2. 4.4.2 STO Safe Subsystem States and Timing Diagram
      3. 4.4.3 STO_1 Subsystem
      4. 4.4.4 STO_2 Subsystem
      5. 4.4.5 MCU (SIL 1) Diagnostic Coverage
      6. 4.4.6 STO_FB Subsystem
      7. 4.4.7 Information on ICs
        1. 4.4.7.1 Isolated 24-V Input Receiver
        2. 4.4.7.2 Load Switch: TPS22919
        3. 4.4.7.3 High-Side Switch: TPS27S100
        4. 4.4.7.4 Isolated Gate Driver: ISO5852S (ISO5452)
    5. 4.5 Safe State
  7. 5Concept FMEA
    1. 5.1 System FMEA
  8. 6References

2 Related Documents

Table 2-1 Collateral and Documentation References
DocumentDescription
Design guide

Redundant dual-channel safe torque off (STO) reference design for AC inverters and servo drives, Texas Instruments, TIDA-01599, https://www.ti.com/lit/pdf/TIDUDS9

Design files will be updated as reflected in this document.

SchematicsUpdated TIDA-01599 schematic rev. E2: TIDA-01599E2.1(001)_Sch.pdf TIDRVA2
Design guideWide-Input Isolated IGBT Gate-Drive Fly-Buck Power Supply for Three-Phase Inverters Reference Design, Texas Instruments, TIDA-00199, TIDU670
Data sheetISO1211, Single-channel Isolated 24-V to 60-V digital input receiver for digital input modules, Texas Instruments, https://www.ti.com/product/ISO1211
Data sheetISO5452, 2.5-A / 5-A 5.7-kV RMS single channel isolated gate driver with split output and protection features, Texas Instruments, https://www.ti.com/product/ISO5452
Data sheetISO5852S, 2.5-A / 5-A, 5.7-kV RMS single channel isolated gate driver with split output and protection, Texas Instruments, https://www.ti.com/product/ISO5852S
Data sheetTPS22919, 5.5-V, 1.5-A, 90-mΩ load switch with adj. output discharge, Texas Instruments, https://www.ti.com/product/TPS22919
Data sheetTPS27S100, 40-V, 80-mΩ, 4-A, 1-ch, Industrial high-side switch with adjustable current limiting and current, Texas Instruments, https://www.ti.com/product/TPS27S100
Data sheetTIOS101, TIOS101x Digital Sensor Output Drivers with Integrated Surge Protection, https://www.ti.com/lit/ds/symlink/tios1013.pdf
Data sheetISO7710 High Speed, Robust EMC Reinforced Single-Channel Digital Isolator, https://www.ti.com/lit/ds/symlink/iso7710.pdf
Concept FMEAFor access to FMEA STO Concept TIDA-01599, use this secure link
Functional safety informationTPS22919-Q1 Functional Safety FIT Rate, FMD and Pin FMA: TPS22919-Q1 FMD_FIT_FMA Document.pdf