ECEN5817 Lecture 16

I will be away on a trip Monday-to-Wednesday, Feb. 27 to Feb.29 (includes lectures 18 and 19) No office hours on Wed Feb 29(includes lectures 18 and 19). No office hours on Wed. Feb.29.

Lecture 18 will be done after Lecture 17, on Friday, Feb.24, 11-11:50am,

Lecture 19 will be done on Friday, March 2, 10-10:50am, followed by Lecture 20, 11-11:50am

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Time-Domain Analysis of Resonant and Soft-Switching Converters

• So far: • Steady-state and dynamic analyses based on sinusoidal approximation• Advantages: it is possible to use frequency-domain techniques• Shortcomings

• Approximate solutions even for traditional resonant converters• Sinusoidal approximation does not apply in many important cases,

where waveforms are not even close to sinusoidal• Various resonant converter modes• Various soft-switching converters

• Next: Time-Domain Analysis• Introduction to state-plane approach

• Normalization, notation, and simple examples• Averaging, charge and volt-second balance

• Exact solutions for series-resonant and parallel-resonant converters

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• Various important soft-switching converter examples

Introduction to state-plane analysis

+L

i

+–V v

_C I

t = 0, v(0) = Vo, i(0) = Io

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