SDAA508 September   2026 DRV81545

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  5. 2Detailed Description
    1. 2.1 DRV81545 Surge (IEC 61000-4-5) with External TVS Diode
      1. 2.1.1 Test Details
      2. 2.1.2 Test Setup
      3. 2.1.3 Results and Observations
      4. 2.1.4 Observations
    2. 2.2 DRV81545 EFT (IEC 61000-4-4) on VM line
      1. 2.2.1 Test Details
      2. 2.2.2 Test Setup
      3. 2.2.3 Results and Observations
      4. 2.2.4 Observations
    3. 2.3 DRV81545 EFT (IEC 61000-4-4) on OUT line
      1. 2.3.1 Test Details
      2. 2.3.2 Test Setup
      3. 2.3.3 Results and Observations
      4. 2.3.4 Observations
    4. 2.4 DRV81545 CISPR-32 Conducted Emissions
      1. 2.4.1 Test Details
      2. 2.4.2 Test Setup
      3. 2.4.3 Results and Observations
      4. 2.4.4 Observations
    5. 2.5 DRV81545 CISPR-32 Radiated Emissions
      1. 2.5.1 Test Details
      2. 2.5.2 Test Setup
      3. 2.5.3 Results and Observations
      4. 2.5.4 Observations
    6. 2.6 Thermal Comparison against Pin-to-Pin and Similar Competition
      1. 2.6.1 Test Details
      2. 2.6.2 Test Setup
      3. 2.6.3 Results and Observations
    7. 2.7 Large Inductive Load Test – 1200mH per OUTx
      1. 2.7.1 Test Details
      2. 2.7.2 Results and Observations
  6. 3Summary
  7. 4References

1 Introduction

The DRV81545 is a four-channel, low-side smart switch designed for demanding industrial and automotive applications requiring robust load switching across wide voltage ranges. Integrating per-channel current limiting, flexible inductive load clamping, and strong EMC immunity, the device simplifies system design while reducing external component count. The features and applications below highlight the DRV81545's versatility across motor drives, factory automation, building control, and beyond.