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:
Feb. 19, 2002
Filed:
Aug. 01, 2000
Ferdinand Jacob Sluijs, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A DC/DC up/down converter ( ), comprising first and second input terminals ( ); first and second output terminal ( ); a coil (L); first switching means (S ) operatively connected to provide a conduction path from said first input terminal ( ) to said coil (L) second switching means (S ) operatively connected to provide a conduction path from said first switching means (S ) and said coil (L) to said second input terminal ( ); third switching means (S ) operatively connected to provide a conduction path from said coil (L) to said first output terminal ( ); fourth switching means (S ) operatively connected to provide a conduction path from said coil (L) and said third switching means (S ) to said second output terminal ( ); control means ( ) operatively connected for controlling said switching means (S S S S ); reference voltage means ( ) for providing a reference voltage (Vr); and comparator means ( ) for providing a comparison signal (Vc) for said control means ( ) in response to comparison of an output voltage (Vo) at said output terminals ( ) with said reference voltage (Vr), characterized in that said control means ( ) are arranged for controlling said switching means (S S S S ) in a three phase conversion cycle wherein phase (&PHgr; ) comprising said first switching means (S ) and said fourth switching means (S ) in a conductive state and said second switching means (S ) and said third switching means (S ) switched in a non-conductive state; phase (&PHgr; ) comprising said first switching means (S ) and said third switching means (S ) in a conductive state and said second switching means (S ) and said fourth switching means (S ) switched in a non-conductive state; phase (&PHgr; ) comprising said second switching means (S ) and said third switching means (S ) in a conductive state and said first switching means (S ) and said fourth switching means (S ) in a non-conductive state.