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:
Apr. 13, 2010
Filed:
Jan. 10, 2008
Junfeng Zhou, Heverlee, BE;
Wim Dehaene, Kessel-Lo, BE;
Junfeng Zhou, Heverlee, BE;
Wim Dehaene, Kessel-Lo, BE;
Semiconductor Components Industries, L.L.C., Phoenix, AZ (US);
Abstract
A regulator circuit receives a power supply and provides a regulated power supply output suitable for integrated circuitry. It has a controllable current source circuit, a controller and a capacitor, such that an output of the controllable current source circuit can provide a lower frequency current part of the regulated power supply output, and the capacitor can supply a higher frequency current part of the regulated power supply output. The controllable current source circuit is controlled according to feedback from the regulated power supply output, and to restrict a rate of change of the output of the controllable current source circuit. The amount of EMI noise caused by high rate of change of current in power supply lines to the regulator circuit can be reduced. This can be done more efficiently or using a smaller capacitor than known arrangements.