The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 2016
Filed:
Jun. 30, 2009
John F. Kenny, Budd Lake, NJ (US);
Joe E. Marriott, Loveland, CO (US);
Katherine Mueller, Budd Lake, NJ (US);
Michael J. Benes, Budd Lake, NJ (US);
Daniel Miller, Windsor, CO (US);
John F. Kenny, Budd Lake, NJ (US);
Joe E. Marriott, Loveland, CO (US);
Katherine Mueller, Budd Lake, NJ (US);
Michael J. Benes, Budd Lake, NJ (US);
Daniel Miller, Windsor, CO (US);
Keysight Technologies, Inc., Santa Rosa, CA (US);
Abstract
Embodiments are described for reducing common-mode current in electronic devices. In the various embodiments, a resonant converter is employed, for example in a power supply, and the resonant converter is driven by a DC input to generate an AC primary voltage on the primary windings of a power transformer. The DC input may be derived from an AC line voltage or a DC-to-DC converter. The AC primary voltage drives the primary winding of the transformer to generate an AC secondary voltage on at least one secondary winding of the transformer. The AC secondary voltage may then drive a rectifier, which in turn drives a low-pass filter to produce a DC output voltage. Phase-shift modulation is employed which, in conjunction with the resonant converter, applies a sinusoidal waveform to the primary of the transformer resulting in a reduced amount of common-mode current injected onto the secondary.