Resonant isolated converters for power supply charge balancing systems and other systems
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United States of America Patent
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Jan 26, 2021
Grant Date -
Oct 4, 2012
app pub date -
Mar 29, 2011
filing date -
Mar 29, 2011
priority date (Note) -
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Abstract
A converter circuit includes a primary side having a resonator and a first control circuit configured to control the resonator. The converter circuit also includes a secondary side having a resonant rectifier and a second control circuit configured to control the resonant rectifier. The converter circuit further includes a transformer configured to electrically isolate the primary side from the secondary side. The second control circuit is configured to turn the resonant rectifier on and off. The first control circuit may be configured to detect when the resonant rectifier is off and, in response, turn the resonator off without using a feedback signal from the secondary side. The first control circuit may be configured to detect when the resonant rectifier is off by detecting when input power to the primary side decreases. The resonant rectifier could be turned on and off by detuning the resonant rectifier.
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