US Patent 7233130 Active ripple reduction switched mode power supplies

Patent 7233130 was granted and assigned to RF Micro Devices on June, 2007 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

RF Micro Devices

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7233130

Date of Patent

June 19, 2007

Patent Application Number

11198822

Date Filed

August 5, 2005

Patent Citations Received

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US Patent 12132398 Active electromagnetic interference filter with damping network

Patent Primary Examiner

‌

Bao Q. Vu

Patent abstract

A system and method are provided for actively reducing ripple in a supply voltage provided by a switched mode power supply. In general, active ripple reduction circuitry operates to sense the ripple in the supply voltage to provide a signal indicative of the ripple. The signal indicative of the ripple is inverted and provided to the output of the switched mode power supply to substantially reduce or eliminate the ripple in the supply voltage.