System and method for wireless power transfer using a power converter with a bypass mode
First Claim
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1. A power converter comprising:
- a pulsed switch;
a capacitor configured to supply a drive voltage to the pulsed switch;
a bootstrap circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, wherein the pulsed switch is operated at less than 100% duty cycle; and
a charge pump circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation, wherein the pulsed switch is operated at 100% duty cycle.
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Abstract
A system and method of wireless power transfer using a power converter with a bypass mode includes a power converter. The power converter includes a pulsed switch, a capacitor configured to supply a drive voltage to the pulsed switch, a first circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, and, a second circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation.
8 Citations
12 Claims
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1. A power converter comprising:
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a pulsed switch; a capacitor configured to supply a drive voltage to the pulsed switch; a bootstrap circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, wherein the pulsed switch is operated at less than 100% duty cycle; and a charge pump circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation, wherein the pulsed switch is operated at 100% duty cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification