PAPER SESSION 3: METHODS AND TOPOLOGIES



Globally Modulated Self-Oscillating Amplifier with Improved Linearity


Bruno Putzeys
Hypex Electronics B.V., Groningen, The Netherlands


An exact oscillation criterion applicable to all binary self-oscillating structures and accounting for modulation index is derived. An exact expression for the averaged DC transfer from the comparator input to the output is derived, permitting precise prediction of the linearity of the modulation process. A 400-W amplifier optimized according to these insights was built and results are presented.


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