SLVUDI8 September   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
  8. 2Hardware
    1. 2.1 EVM Connection
    2. 2.2 Jumper Information
    3. 2.3 EVM Theory and Operation
      1. 2.3.1 Setting the Cathode Current (IKA)
      2. 2.3.2 Setting the Cathode Voltage (VKA)
      3. 2.3.3 Checking Stability and Transient Response
    4. 2.4 Test Modes
  9. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  10. 4Compliance Information
    1. 4.1 Compliance and Certifications
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Related Documentation

2.1 EVM Connection

Table 2-1 describes the purpose of each test point on the TLA431EVM.

Table 2-1 TLA431EVM Test Point Summary
Test Point Test Point Name Type Functionality
TP1 Vdd Input Provide power to the TLA431EVM through input resistor R6.
TP2 Cathode Output Constant voltage output set by configuring jumpers J1 and J2.
TP3 Ref Output Reference voltage of the TLA431.
TP4/5 Anode Input Provide path for shunt current to flow. This test point is commonly connected to GND.

The underside of the TLA431EVM includes two footprints which can also accommodate testing for shunt voltage references which are pin-to-pin compatible with the TLA431 and TLA432 in SOT23-3 package. The cathode, reference, and anode pins for these footprints are also connected to each test point as shown in Figure 3-1 and described in Table 2-1. The plastic standoffs at each corner of the board can be unscrewed and turned around to access these footprints when soldering.