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. 03, 2017
Filed:
Jun. 19, 2013
Nxp B.v., Eindhoven, NL;
NXP B.V., Eindhoven, NL;
Abstract
A control circuit for a switched-mode power supply having an input side () connectable to an electrical power source and an output side () connectable to a load. The control circuit comprises: a primary control circuit () adapted to generate a driving signal for a switching element () at the input side of the power supply; a secondary control circuit () adapted to monitor an output signal at the output side () of the power supply; and an opto-coupler (), wherein the opto-coupler is arranged to receive its input from the secondary control circuit and to provide a control signal to the primary control circuit, and the primary control circuit comprises a compensation circuit () adapted to process the control signal to generate a compensation signal for reducing power consumption in the opto-coupler, wherein the compensation circuit is adapted to generate the compensation signal such that a current in the opto-coupler tends to return to a desired minimum value.