SDAA394 June   2026 LMG2650 , TLV431 , UCC25661

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1UCC25661x Frequently Asked Questions
    1. 1.1  How to Connect External Gate Drivers to the UCC25661x for High Gate Driver Current Capability?
    2. 1.2  Up To What Switching Frequency Controller Can Operate?
    3. 1.3  While Operating UCC25661x, 1 Second Fault is Coming. How to Debug it?
    4. 1.4  How to Implement A Battery Charger with UCC25661x?
    5. 1.5  How to Set Up OVP/OTP Pin?
    6. 1.6  How to Set Up The TSET Pin in UCC25661x Family?
    7. 1.7  How to Avoid FB Pin Saturation? How to Detect it?
    8. 1.8  Can the Device Sustain Damage if the HV Pin Current Goes Beyond What is Mentioned in the Datasheet?
    9. 1.9  How does TON extension work in UCC25661?
    10. 1.10 How ZCS Protection Works in UCC25661x?
    11. 1.11 How does Adaptive Deadtime Work?
    12. 1.12 How is the Dead Time in UCC25661x Determined During ZCS Detection and in the Absence of Valid Slew Rate Detection?
    13. 1.13 How to Test UCC25661 Without Applying High DC Voltage in Input of the Converter?
    14. 1.14 How to Connect GaN With UCC25661x?
    15. 1.15 How Much Maximum LL, TSET and ISNS Pin Decoupling Capacitors Must Be Used?
    16. 1.16 How Can Burst Mode Programming Be Changed While Running the Controller?
    17. 1.17 Summary
    18. 1.18 References

Abstract

This application note discusses the most frequently asked questions of the UCC25661x LLC resonant controller when used in different applications.