SLVUC79A april   2022  – june 2023 TPSI2140-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4.   General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  5. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
  6. 2Connection Descriptions
  7. 3Test Equipment
  8. 4Recommended Test Setup
    1. 4.1 Waveforms
    2. 4.2 S2 Voltage Divider
  9. 5Schematic
  10. 6PCB Layout
  11. 7Bill of Materials
  12. 8Revision History

1 Introduction

The TPSI2140-Q1 is an isolated solid state relay designed for high voltage automotive and industrial applications such as battery management systems, EV/HEV onboard chargers, mechanical relay replacement, DC link pre-charging, and more. The TPSI2140-Q1 seamlessly replaces relays without need for a secondary side supply while leveraging unique isolation technology integrated in a compact SOIC package. The entire primary side of the device requires only 9 mA of input current, enabling the user to drive the VDD and EN pins from a single microcontroller GPIO and eliminating the need for an external low side switch used in Photomos solutions. The secondary side consists of back-to-back MOSFETs with a standoff voltage of +/– 1.2 kV from S1 to S2. The TPSI2140-Q1 MOSFETs' avalanche robustness and thermally conscious package design allow it to survive system level High Potential (HiPot) screening and DC fast charger surge currents of up to 2 mA without requiring any external components.