Resonant switching converter

Details Resonant switching converter Resonant switching converter

1989-02-22

1990-07-31

Beha, Jr., William H.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 19, 363131, 331117R, H02M 3338

Patent

active

049454668

ABSTRACT:
A resonant switching converter including a first series resonant circuit including a first inductor and a first capacitor connected in series with a voltage source, a second series resonant circuit including a second inductor and the first capacitor, a switch connected in series with said second inductor and responsive to the current in the first inductor for enabling a discharge path through the load for the charge stored by the first capacitor. A first control circuit responsive to the voltage on the first capacitor may also be provided for operating the switch at a controlled voltage to facilitate line and load regulation. A second control circuit responsive to the output voltage may be included to provide line and load regulation. The switch is only closed after the resonant capacitor has charged to its peak value or beyond. Accordingly, the energy stored in the first capacitor may be accurately controlled between the limits of 0-2 times the input voltage and large changes in line and load may be tolerated without large changes in operating frequency.

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