SLYT863 April   2025 LM5066I

 

  1.   1
  2. 1 Introduction
  3. 2 3
  4. 3 Challenges in designing a hot-swap circuit for a 48V AI server
  5. 4 Challenge No. 1: Turnoff delay during an output short-circuit
  6. 5 Challenge No. 2: False gate turn-off during a load transient
  7. 6 Challenge No. 3: Parallel resonance during controlled (slow) turn-on
  8. 7 Proposed circuit enhancements
  9. 8 Improving the turn-off response
  10. 9 Overcoming false turn-off for dynamic loads
  11. 10Damping parasitic oscillations
  12. 11Design guidelines and component selection
  13. 12Cdv/dt discharge circuit
  14. 13Conclusion
  15. 14References
  16. 15Related Websites

14 References

  1. Rogachev, Artem. “Robust Hot Swap Design.” Texas Instruments application report, literature No. SLVA673A, April 2014.
  2. Texas Instruments. “8kW Hot-Swap Reference Design for 48V Artificial Intelligence Servers.” Texas Instruments test report, literature No. PMP23496, August 2024.
  3. Hegarty, Timothy. 2011. “TVS Clamping in Hot-Swap Circuits.” Power Electronics Technology, October 2011.