SNOU220B July   2025  – November 2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5. 1.5 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  8. 2Hardware
    1. 2.1 Overview
    2. 2.2 High Voltage Connection Setup Guide
      1. 2.2.1 Detaching the Sensor
      2. 2.2.2 Attaching Sensor Section to High Voltage Heat Source
    3. 2.3 Perforations
    4. 2.4 Status LEDs and Subregulator
    5. 2.5 Programming Header
    6. 2.6 Pushbutton Switch
    7. 2.7 RC Filter
  9. 3Software
    1. 3.1 Software Download
      1. 3.1.1 Online Software
      2. 3.1.2 Offline Software
    2. 3.2 Home Tab
    3. 3.3 Data Capture Tab
    4. 3.4 Collateral Tab
  10. 4Hardware Design Files
    1. 4.1 ISOTMP35REVM Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Revision History

2.4 Status LEDs and Subregulator

The ISOTMP35REVM includes LEDs to indicate board status; the green LED D3 illuminates when VDUT is powered up correctly. D3 illuminates whether VDUT is supplied by the 3.3V from U1 or from an external voltage source. U1 is the onboard regulator which supplies the 3.3V net, and is enabled and disabled by switch SW2. For normal operation of the EVM with no external connections, SW2 must be set to the 3.3V net. By default, SW2 is set at a neutral middle position where the ISOTMP35REVM is unpowered. To power the ISOTMP35R, SW2 must be moved to either position to connect to the 3.3V net or an external power source. To connect an external power source, use the red and black test points labeled VEXT & GND respectively with SW2 set to VEXT.

The red LED D4 is the MSP430F5528 status LED. Table 2-1 shows what the different modes of operation mean.

Table 2-1 D4 LED Status
D4 LED STATUSMEANING
OffEVM is connected to EVM GUI
Blinking in 4 blink burstEVM is plugged into PC, not connected to EVM GUI
Steady blinkingConnected to USB power