TIDUF23A May   2023  – May 2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Terminology
    2. 1.2 Key System Specifications
  8. 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  F29H859TU-Q1
      3. 2.3.3  UCC14240-Q1
      4. 2.3.4  UCC33421-Q1
      5. 2.3.5  AMC0386-Q1
      6. 2.3.6  AMC0381D-Q1
      7. 2.3.7  TCAN1043-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. 2.4.2 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 12V Distribution and Control
        4. 2.4.3.4 Gate Drive Supply
        5. 2.4.3.5 5V Supply Domain
        6. 2.4.3.6 Current and Position Sensing Power
  9. 3Hardware, 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 SOM Evaluation Board – C2000™
        3. 3.1.1.3 Gate Driver and Bias Supply Board
        4. 3.1.1.4 DC Bus Voltage Sense
        5. 3.1.1.5 SiC Power Module
          1. 3.1.1.5.1 XM3 SiC Power Module
          2. 3.1.1.5.2 Module Power Terminals
          3. 3.1.1.5.3 Module Signal Terminals
          4. 3.1.1.5.4 Integrated NTC Temperature Sensor
        6. 3.1.1.6 Laminated Busing and DC Bus Capacitors
          1. 3.1.1.6.1 Discharge PCB
    2. 3.2 Test Results
      1. 3.2.1 Isolated Bias Supply
      2. 3.2.2 Isolated Gate Driver
      3. 3.2.3 Inverter System
  10. 4General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  11. 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
  12. 6Revision History

2.3.5 AMC0386-Q1

The AMC0386-Q1 is a precision, galvanically isolated delta-sigma (ΔΣ) modulator with a high-voltage, high-impedance input, and external clock. The input is designed to connect directly to a high-voltage signal source.

The isolation barrier separates parts of the system that operate on different common-mode voltage levels. The isolation barrier is highly resistant to magnetic interference and is certified to provide reinforced isolation of up to 5kVRMS (60s).

The AMC0386-Q1 is available with a ±600V and ±1000V linear input range. The resistive divider at the input of the AMC0386-Q1 scales down the voltage applied to the HVIN pin to a ±1V level. This signal is available on the SNSP pin, which is also the input of the analog signal chain.

The input stage of the AMC0386-Q1 feeds a second-order, switched-capacitor, feed-forward ΔΣ modulator. The modulator converts the analog signal into a bitstream that is transferred across the isolation barrier. The output bitstream is synchronized to an external clock. Combined with a sinc3, OSR 256 filter, the device achieves 16 bits of resolution with an 84dB dynamic range and a 39kSPS data rate.

With an integrated resistive divider, low temperature drift and high lifetime stability, the AMC0386-Q1 achieves better than 1% voltage sensing accuracy including lifetime and temperature drift, without system-level calibration.