SBOU241E April   2020  – August 2022 INA228 , INA229 , INA237 , INA238 , INA239

 

  1.   SBOU241 Abstract
  2. 1Trademarks
  3.   General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  4. 2Overview
    1. 2.1 Kit Contents
    2. 2.2 Related Documentation From Texas Instruments
  5. 3Hardware
    1. 3.1 Features
  6. 4Operation
    1. 4.1 Quick Start Setup
    2. 4.2 EVM Operation
      1. 4.2.1 Setup
        1. 4.2.1.1 Driver Installation
        2. 4.2.1.2 Firmware
          1. 4.2.1.2.1 Firmware Debug
        3. 4.2.1.3 GUI Setup and Connection
          1. 4.2.1.3.1 Initial Setup
          2. 4.2.1.3.2 GUI to EVM Connection
      2. 4.2.2 GUI Operation
        1. 4.2.2.1 Homepage Tab
        2. 4.2.2.2 Configuration Tab
        3. 4.2.2.3 Registers Tab
        4. 4.2.2.4 Results Data Tab
      3. 4.2.3 Current Sensing Operation
        1. 4.2.3.1 Detailed Setup
      4. 4.2.4 Direct EVM USB Communication
        1. 4.2.4.1 Standard USB Read and Write Operations
        2. 4.2.4.2 Collect Data Through the USB BULK Channel
      5. 4.2.5 PAMB Compatibility
  7. 5Circuitry
    1. 5.1 Current Sensing IC
    2. 5.2 Input Signal Path
    3. 5.3 Digital Circuitry
      1. 5.3.1 I2C (INA228, INA237, INA238)
      2. 5.3.2 SPI (INA229, INA239)
  8. 6Schematics, PCB Layout, and Bill of Materials
    1. 6.1 Schematics
      1. 6.1.1 SENS063 (INA228EVM, INA237EVM, INA238EVM)
      2. 6.1.2 SENS064 (INA229EVM, INA239EVM)
    2. 6.2 PCB Layout
      1. 6.2.1 SENS063 (INA228EVM, INA237EVM, INA238EVM)
      2. 6.2.2 SENS064 (INA229EVM, INA239EVM)
    3. 6.3 Bill of Materials
      1. 6.3.1 SENS063 (INA228EVM, INA237EVM, INA238EVM)
      2. 6.3.2 SENS064 (INA229EVM, INA239EVM)
  9. 7Revision History

4.2.3 Current Sensing Operation

The EVM can be used with either an onboard or external shunt resistor. To use the onboard shunt resister, solder a 2512 surface-mount technology (SMT) shunt resistor across the pads of R1, and connect it in series with the external system and load currentthrough J1. An external shunt can be connected directly across the terminals of J1. There are two terminals each for IN+ (J1 pins 5 and 6) and IN– (J1 pins 3 and 4) for convenience.