SLVUD59 September   2025 TPSI2240-Q1

PRODUCTION DATA  

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 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
  7. 2Hardware
    1. 2.1 Recommended Test Equipment
    2. 2.2 Jumper Information
    3. 2.3 Test Points
  8. 3Implementation Results
    1. 3.1 Evaluation Setup
      1. 3.1.1 Recommended Test Setup
    2. 3.2 Performance Data and Results
      1. 3.2.1 Waveforms
      2. 3.2.2 S2 Voltage Divider
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)

3.1.1 Recommended Test Setup

TPSI2240Q1EVM TPSI2240Q1EVM Test SetupFigure 3-1 TPSI2240Q1EVM Test Setup
Note:

Important Note: The setup shown in Figure 3-1 assumes that high and low voltage grounds (GND & HV-) are shorted to allow for safe oscilloscope capture. In this configuration, the isolation barrier in the TPSI2240-Q1 device is bypassed. To evaluate the device with the isolation barrier, use differential oscilloscope probes and keep high and low voltage grounds separated.

Verify that the TPSI2240Q1EVM has the following setting on the jumpers:

  1. J3 – Connecting EN pin to VDD Rail

To test the normal operation of TPSI2240-Q1, follow the steps outlined below:

  1. Connect a 5V power supply to the banana jacks of J1 with the negative lead connected to J2 to power TPSI2240-Q1.
  2. Before placing in the enclosure or connecting the High-Voltage (HV) power supply, verify all voltages on the primary side of TPSI2240-Q1 are as expected using TP2 (VDD) and TP3 (EN) referenced to TP1 (GND).
  3. Place the board in the enclosure. Attach the high-voltage power supply (800V) positive lead to J4 and the negative to J6.
  4. With oscilloscope probes connected to voltages of interest (VDD/EN, HV+, S2), turn on the high-voltage supply then subsequently toggle the 5V supply connected to EN. Observe that TP3 (EN), J4 (HV+), and TP6 (S2) show the expected voltages.

To test the High Potential (HiPot) operation of TPSI2240-Q1, follow the steps below:

  1. Verify that no power supply connects to the TPSI2240-Q1 J1 and J2 primary side connectors during HiPot testing.
  2. Place the board in the enclosure and attach the high-voltage power supply (4300V) positive lead to J4 and the negative lead to J6.
  3. With oscilloscope probes connected to voltages of interest (HV+, S1-S2), turn on the high-voltage supply with a 60s pulse then observe that J4 (HV+), TP4-TP6 (S1-S2) show the expected voltages.