SDAA262A January   2026  – April 2026 TMS320F28P659DK-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Voltage Stress on Synchronous Rectifier
    2. 1.2 Snubber Circuit Overview
      1. 1.2.1 RC Snubber
      2. 1.2.2 RCD Snubber
      3. 1.2.3 Diode Clamping
      4. 1.2.4 Active Clamping
  5. 2Active Clamping Circuit
    1. 2.1 Different Types of ACL Circuits
      1. 2.1.1 Difference Placement of ACL
      2. 2.1.2 PMOS Type and NMOS Type
    2. 2.2 Hardware Design of ACL Circuit
      1. 2.2.1 Clamping Capacitor
      2. 2.2.2 Power Switches
      3. 2.2.3 Gate Driver
    3. 2.3 Software Design of ACL Circuit
      1. 2.3.1 Turn-on Delay
      2. 2.3.2 Turn-on Duration
  6. 3Summary
  7. 4References
  8. 5Revision History

1.2 Snubber Circuit Overview

Snubber circuits are generally categorized into two primary classifications: passive snubber circuits and active clamping circuits. The subsequent sections provide a detailed analysis of each circuit topology.