TIDUF23 may   2023

 

  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  UCC5880-Q1
      2. 2.3.2  AM2634-Q1
      3. 2.3.3  TMS320F280039C-Q1
      4. 2.3.4  UCC14240-Q1
      5. 2.3.5  UCC12051-Q1
      6. 2.3.6  AMC3330-Q1
      7. 2.3.7  TCAN1462-Q1
      8. 2.3.8  ISO1042-Q1
      9. 2.3.9  ALM2403-Q1
      10. 2.3.10 LM5158-Q1
      11. 2.3.11 LM74202-Q1
    4. 2.4 System Design Theory
      1. 2.4.1 Microcontrollers
        1. 2.4.1.1 Microcontroller – C2000™
        2. 2.4.1.2 Microcontroller – Sitara™
      2. 2.4.2 Isolated Bias Supply
      3. 2.4.3 Power Tree
        1. 2.4.3.1 Introduction
        2. 2.4.3.2 Power Tree Block Diagram
        3. 2.4.3.3 12 V Distribution and Control
        4. 2.4.3.4 Gate Drive Supply
        5. 2.4.3.5 5-Volt Supply Domain
        6. 2.4.3.6 Current and Position Sensing Power
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Hardware Board Overview
        1. 3.1.1.1 Control Board
        2. 3.1.1.2 MCU Control Card – Sitara™
        3. 3.1.1.3 MCU Control Card – C2000™
        4. 3.1.1.4 Gate Driver and Bias Supply Board
        5. 3.1.1.5 DC Bus Voltage Sense
        6. 3.1.1.6 SiC Power Module
          1. 3.1.1.6.1 XM3 SiC Power Module
          2. 3.1.1.6.2 Module Power Terminals
          3. 3.1.1.6.3 Module Signal Terminals
          4. 3.1.1.6.4 Integrated NTC Temperature Sensor
        7. 3.1.1.7 Laminated Busing and DC Bus Capacitors
          1. 3.1.1.7.1 Discharge PCB
    2. 3.2 Test Setup
      1. 3.2.1 Software Setup
        1. 3.2.1.1 Code Composer Studio Project
        2. 3.2.1.2 Software Structure
    3. 3.3 Test Procedure
      1. 3.3.1 Project Setup
      2. 3.3.2 Running the Application
    4. 3.4 Test Results
      1. 3.4.1 Isolated Bias Supply
      2. 3.4.2 Isolated Gate Driver
      3. 3.4.3 Inverter System
  9. 4General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  10. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
      3. 5.1.3 PCB Layout Recommendations
        1. 5.1.3.1 Layout Prints
      4. 5.1.4 Altium Project
      5. 5.1.5 Gerber Files
      6. 5.1.6 Assembly Drawings
    2. 5.2 Tools and Software
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  11. 6Terminology

2.3.11 LM74202-Q1

LM74202-Q1 is a diode with integrated back-to-back FETs and enhanced built-in protection circuitry. LM74202-Q1 provides robust protection for all systems and applications powered from 4.2 V to 40 V. The device integrates reverse battery input, reverse current, overvoltage, undervoltage, overcurrent and short circuit protection. The precision overcurrent limit (±5% at 1 A) helps to minimize over design of the input power supply, while the fast response short circuit protection immediately isolates the load from input when a short circuit is detected. The device allows the user to program the overcurrent limit threshold between 0.1 A and 2.23 A with an external resistor. The device monitors the bus voltage for brown-out and overvoltage protection, asserting the FLTb pin to notify downstream systems.