LLC Resonant Half Bridge Converter

More documents

Recommendations

Info

Design Goals for LLC Resonant Converter • Minimize RMS current under normal operation condition • Ensure ZVS operation • Ensure desired operation range
Design Consideration -1: Primary RMS Current at Normal Operation I P, RMS = I FHA → r = I 2 m + I ⎛ ⎜ 2 2 nV ⎜ ⎝ π ωL O 2 Re m ⎞ ⎟ ⎟ ⎠ 2 = ⎛ ⎜ π + ⎜ ⎝ 2 2 2 I ⎞ o ⎟ n ⎟ ⎠ • Primary current can be easily calculated from the phasor circuit • Primary side RMS current is summation of magnetizing current and load current • Larger Lm is better for less conduction losses
Page 1 and 2: LLC Resonant Half Bridge Converter
Page 3 and 4: Design Challenges for DC/DC • Hig
Page 5 and 6: LLC Resonant Converter with Wide Op
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: LLC Resonant Converter Operation fo
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?