Reducing switching losses in a phase-modulated switch-mode amplifier

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United States of America Patent

PATENT NO 5541827
SERIAL NO

08442685

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Abstract

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A switching amplifier circuit includes a tri-state switching circuit receiving a DC voltage signal and having first electrical switches responsive to first control signals and providing a differential AC voltage waveform at a predetermined frequency alternating between a positive DC voltage, negative DC voltage and a zero voltage. The switching amplifier further includes a rectifier circuit having second electrical switches responsive to second control signals for receiving the differential AC voltage output waveform from the tri-state switching circuit and providing a desired output signal. The second control signals are applied to switch the second electrical switches only when the first electrical switches of the tri-state switching circuit are in the zero voltage state.

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Patent Owner(s)

Patent OwnerAddress
DOBLE ENGINEERING COMPANY A MASSACHUSETTS CORP85 WALNUT STREET WATERTOWN MA 02172

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Allfather, Lars P Boston, MA 8 139

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