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. 25, 2023
Filed:
Mar. 30, 2020
Signify Holding B.v., Eindhoven, NL;
Ming Li, Shanghai, CN;
Bernd Clauberg, Schaumburg, IL (US);
Yuhong Fang, Naperville, IL (US);
Johannes Petrus Wernars, Megen, NL;
Liang Hong, Shanghai, CN;
Ashwin Premraj, Des Plaines, IL (US);
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
An isolated converter has a transformer with a primary winding (in a primary side circuit) and a secondary winding magnetically coupled to the primary winding. A first Y-capacitor is electrically connected between the primary side circuit and the secondary winding. The detection circuit is for detecting information at the primary side, preferably information about the input supply received at the input, and more preferably the information is that whether the input supply is an alternating current (AC) supply or a direct current (DC) supply, and the detection circuit includes the first Y-capacitor. The detection circuit enables the detected information to be provided directly to a secondary side controller, without needing opto-isolators or other isolated data transmission. The detection circuit () comprises a capacitor divider comprising the first Y-capacitor (C), and further comprising a second impedance and a third capacitor (C) connected in series with the first Y-capacitor (C), with the first Y-capacitor (C), the second impedance, and the third capacitors (C, C, C) in series between a primary side ground (PGND) and the input (), wherein the detection circuit is for detecting a voltage across a second impedance to obtain a signal indicating the information at the primary side. Preferably the second impedance comprises a second capacitor (C).