SLVUCO6 june   2023 TPSI2072-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 VS1_ADC and VS2_ADC Voltage Dividers
  9. 5Schematic
  10. 6PCB Layout
  11. 7Interlayer Stitching Capacitor
    1. 7.1 Interlayer Stiching Capacitors & EMI Performance Improvements
    2. 7.2 VS1_ADC and VS2_ADC Voltage Dividers
  12. 8Bill of Materials
  13. 9Revision History

1 Introduction

The TPSI2072-Q1 is a dual channel 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 TPSI2072-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, EN1, and EN2 pins from two microcontroller GPIO pins 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 +/– 600 V from S1 to SM and S2 to SM. The TPSI2072-Q1 MOSFETs' avalanche robustness and thermally conscious package design allow it to survive system level dielectric withstand testing (HiPot) and DC fast charger surge currents of up to 2 mA without requiring any external components.