Two terminals quasi resonant tank circuit
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United States of America Patent
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Apr 12, 2011
Grant Date -
Mar 18, 2010
app pub date -
Nov 17, 2009
filing date -
Feb 14, 2006
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Abstract
A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.
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Patent Owner(s)
- FLEXTRONICS AP, LLC
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Jansen, Arian | Lake Forest, US | 13 | 357 |
Sharifipour, Bahman | Westborough, US | 33 | 233 |
Telefus, Mark | Orinda, US | 82 | 1750 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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