SLUAAT9 January   2024 LM5101A , UCC27201A , UCC27201A-Q1 , UCC27211A , UCC27282 , UCC27282-Q1 , UCC27284 , UCC27284-Q1 , UCC27301A-Q1 , UCC27311A-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Start-Up Operation
  5. 2Design Considerations
  6. 3Proper Sizing of Bootstrap and VDD Capacitors
  7. 4High Power Continuous Operation
  8. 5Design Considerations
  9. 6Summary
  10. 7References

Summary

This application note has clearly identified some of the critical operating modes of bi-directional DC-DC converter where special design attention is needed from the half-bridge gate driver perspective. This paper has made very clear recommendation regarding boot-strap bias circuit design, including bootstrap diode and bootstrap capacitor. These guidelines and recommendation shall help many design engineers to build robust, efficient, and reliable bi-directional DC-DC converters for many automotive and industrial applications.