SBOU302A June   2023  – December 2023 INA740A , INA740B , INA745A , INA745B , INA780A , INA780B

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Quick Start Setup
    2. 2.2 EVM Operation
      1. 2.2.1 Current Sensing Operation
        1. 2.2.1.1 Detailed Setup
    3. 2.3 Circuitry
      1. 2.3.1 Current Sensing IC
      2. 2.3.2 Input Signal Path
      3. 2.3.3 Digital Circuitry
        1. 2.3.3.1 I2C
    4.     General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  7. 3Software
    1. 3.1 Setup
      1. 3.1.1 Driver Installation
      2. 3.1.2 Firmware
        1. 3.1.2.1 Firmware Debug
      3. 3.1.3 GUI Setup and Connection
        1. 3.1.3.1 Initial Setup
        2. 3.1.3.2 GUI to EVM Connection
    2. 3.2 GUI Operation
      1. 3.2.1 Homepage Tab
      2. 3.2.2 Registers Tab
      3. 3.2.3 Results Data Tab
    3. 3.3 Direct EVM USB Communication
      1. 3.3.1 Standard USB Read and Write Operations
      2. 3.3.2 Collect Data Through the USB BULK Channel
  8. 4Hardware Design Files
    1. 4.1 Schematics
      1. 4.1.1 SENS108 (INA740AEVM, INA740BEVM, INA741EVM)
      2. 4.1.2 SENS109 (INA745AEVM, INA745BEVM, INA746EVM)
      3. 4.1.3 SENS119 (INA780AEVM, INA780BEVM, INA781EVM)
    2. 4.2 PCB Layout
      1. 4.2.1 SENS108 (INA740AEVM, INA740BEVM, INA741EVM)
      2. 4.2.2 SENS109 (INA745AEVM, INA745BEVM, INA746EVM)
      3. 4.2.3 SENS119 (INA780AEVM, INA780BEVM, INA781EVM)
    3. 4.3 Bill of Materials
      1. 4.3.1 SENS108 (INA740-INA741EVM), SENS109 (INA745-INA746EVM), SENS119 (INA780-INA781EVM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Related Documentation
  11. 7Revision History

2.3.3.1 I2C

J2 and J3 are the main header pins that connect the digital and power pins to the SCB Controller or other EVMs. J3 connects to the EVM/SCB on the top, while J2 connects to more EVMs on the bottom. R5 and R6 are used as pullup resistors for the main digital IO pins.

SW0 (sets A0 pin) and SW1 (sets A1 pin) set the I2C address of the device. This can be useful when using the EVM with a custom controller (other than the SCB Controller), or when connecting multiple EVMs together. Currently the SCB Controller and GUI are set up to use four EVMs at a time.

R8 is used as a pullup resistor for the ALERT pin, which is routed to both J2 and J3. LED D2 and current limiting resistor R7 are used to indicate when the ALERT has triggered.