LLC Resonant Half Bridge Converter

More documents

Recommendations

Info

Benefits of LLC Resonant Converter • ZVS can be achieved by utilizing transformer magnetizing inductor • Capacitor filter, less voltage stress on rectifiers • Smaller switching loss due to small turn off current • Variable switching frequency control, not sensitive to load change • Frequency variations can be designed narrower compared to SRC • Wide operation range without reducing normal operation efficiency
LLC Resonant Converter with Wide Operation Range Resonant frequency f 0 = 2π 1 r r C L Square Wave Generator to excite Resonant Circuit Transformer turns-ratio Rectifier to get DC • f sw is set at resonant frequency at nominal input and output • f sw is adjusted by feedback loop at other operation conditions n Vin / 2 = V o
Page 1 and 2: LLC Resonant Half Bridge Converter
Page 3: Design Challenges for DC/DC • Hig
Page 7 and 8: Operation Principle Above Resonant
Page 9 and 10: LLC Resonant Converter Gain Functio
Page 11 and 12: LLC Resonant Converter with Wide Op
Page 13 and 14: Gain Characteristics with Ln and Qe
Page 15 and 16: LLC Resonant Converter Operation fo
Page 17 and 18: Design Consideration -1: Primary RM
Page 19 and 20: Design Consideration -3: Zero Volta
Page 21 and 22: Trade-off Design of Dead Time Condu
Page 23 and 24: Design Flow Chart for LLC Resonant
Page 25 and 26: Design - Soft start Soft start is
Page 27 and 28: Feedback Loop Design - Measure G m
Page 29 and 30: UCC25600 Resonant Half Bridge Contr
Page 31 and 32: Test based on EVM (UCC25600EVM)
Page 33 and 34: Test with EVM: Ripple and Hiccup
Page 35 and 36: Test with EVM: Efficiency and Load

LLC Resonant Half Bridge Converter

Create successful ePaper yourself

Delete template?

Save as template?