SLUA669B March   2013  – September 2023 UCC27511 , UCC27531 , UCC27532 , UCC27533 , UCC27536 , UCC27537 , UCC27538

 

  1.   1
  2.   Using a Single-Output Gate-Driver for High-Side or Low-Side Drive
  3.   Trademarks
  4. 1Introduction
  5. 2Methods For High-Side Drive
    1. 2.1 Gate-Drive Transformer Solution
    2. 2.2 Bootstrap Bias Supply with Capacitive Signal Isolation Solution
    3. 2.3 Isolated Bias Supply With Isolated High-Side Gate-Driver Solution
    4. 2.4 Bootstrap Bias Supply with Isolated High/Low side Gate-Driver Solution
    5. 2.5 Gate-Drive Transformer Solution
  6. 3Conclusion
  7. 4 Revision History

3 Conclusion

Driving the gates of LS power switches is fairly simple in terms of signal path and proper biasing. Driving floating-source switches such as HS MOSFETs in bridge configurations, however, presents some challenges in terms of both signal path and bias for the HS gate driver. This paper has presented numerous circuit examples that have shown different methods of achieving HS gate driving using a single-output gate driver.