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:
Nov. 28, 2017
Filed:
Feb. 25, 2016
International Business Machines Corporation, Armonk, NY (US);
Andreas Christian Doering, Zufikon, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A buck converter for converting an input voltage into an output voltage including a first switch and a low-pass filter circuit comprising an inductor, a low-pass filter switching device and an output capacitor system. The output capacitor system comprises a parallel arrangement of a first path comprising a first capacitor and at least a second path comprising a serial connection of a second capacitor and a second switch. A controller is provided to turn on the first switch during an on-cycle, thereby switching the input voltage to the low-pass filter circuit, and to turn off the first switch during an off-cycle. The controller further turns off the second switch under normal load operations so that the second capacitor is not charged and turns on the second switch in case of a load reduction during the off-cycle so that the second capacitor is added to the output capacitor system by the second switch.