SNOAAB9 September   2026 LMG3526R030

 

  1.   1
  2.   Abstract
  3. 1Introduction
    1. 1.1 Fundamentals of Soft Switching
    2. 1.2 Dead-Time Losses in Soft Switching
    3. 1.3 Challenges in GaN Applications
  4. 2Adaptive Dead-Time Control Based on ZVD
    1. 2.1 TI GaN ZVD Function
    2. 2.2 LLC Primary-Side Adaptive Dead-Time Control
    3. 2.3 LLC Secondary-Side Adaptive Dead-Time Control
  5. 3PLECS Simulation Verification
  6. 4Conclusion
  7. 5References

4 Conclusion

This paper introduces the third-quadrant characteristics of GaN and provides an in-depth discussion of the mechanisms behind dead-time losses of GaN devices in soft-switching topologies. An adaptive dead-time adjustment mechanism based on TI GaN ZVD technology is proposed to adaptively optimize the primary- and secondary-side dead times of LLC/CLLC topologies, reduce dead-time losses, and minimize the adverse impact of the high reverse conduction voltage of GaN devices on system performance.