Post regulator with energy recovery snubber and power supply employing the same
Patent 5943224 Issued on August 24, 1999. Estimated Expiration Date: 
April 6, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 6, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesEfficient snubber for rectifier circuits Lossless active snubber for half-bridge output rectifiers Soft switching active snubber for semiconductor circuit operated in discontinuous conduction mode Non-dissipative snubber circuit for a switched mode power supply Lossless snubber circuit for use in power converters Snubber circuit for rectifying diodes and method of operation thereof Patent #: 5731966 InventorApplicationNo. 055815 filed on 04/06/1998US Classes:363/52, For rectifiers363/53Semiconductor typeExaminersPrimary: Nguyen, MatthewInternational ClassH02H 007/125AbstractFor use with a post regulator for a power converter, the post regulator having a rectifier circuit and an output circuit, an energy recovery snubber, a method of operating the same and a power converter employing the snubber or the method. In one embodiment, the snubber includes: (1) a clamping diode and a clamping capacitor, series-coupled between the rectifier circuit and the output circuit, that cooperate to recover reverse recovery energy developed in the power converter to an output thereof and (2) a charge balancing circuit, coupled to the clamping capacitor, that maintains a charge balance of the clamping capacitor.Other References
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