SLOU567B March   2025  – November 2025 THS3470

 

  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. 2Configuration Details
    1. 2.1 Heat Sink Usage
    2. 2.2 Power Connections
    3. 2.3 Input and Output Connections
    4. 2.4 Output Current Limits
    5. 2.5 Power Control Modes
    6. 2.6 Die Temperature and Output Current Readings
  7. 3Quick Start Instructions
    1. 3.1 Required Equipment for Basic Evaluation
    2. 3.2 Steps for Standard AC or DC Evaluation
    3. 3.3 Using Multiple Power Supplies
    4. 3.4 TI Evaluation Setup Images
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Revision History

2.5 Power Control Modes

The THS3470 features two power mode control pins P0 (pin 31) and P1 (pin 30) that set the power level of the device. These pins are controlled by switch S3 on the EVM, which can be set three different positions to connect to VDD, ground, or the overtemperature flag pins. Connect to the overtemperature flag (pins 22 and 23) to automatically shut down the device if the device passes the maximum temperature threshold. Table 2-2 shows a truth table of the different power control connections on the EVM.

Table 2-2 THS3470EVM Bias Control Modes
PWR_CTL_1PWR_CTL_0Mode
VDDVDDFull bias
GNDGNDPower down mode
Overtemp flagOvertemp flagFull bias unless the overtemp flag is triggered, then the part shuts down