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:
Sep. 08, 2020
Filed:
Dec. 06, 2018
Infineon Technologies Austria Ag, Villach, AT;
Sujata Sen, Marina Del Rey, CA (US);
Ronald Hulfachor, Nashua, NH (US);
Sue Perranoski, Rancho Palos Verdes, CA (US);
Cha-Fu Tsai, Torrance, CA (US);
Infineon Technologies Austria AG, Villach, AT;
Abstract
An isolated switched-mode power converter converts power from an input source into power for an output load. A digital controller senses a secondary-side voltage, such as a rectified voltage, of the power converter. The secondary-side voltage is divided down using a high-impedance voltage divider. The resultant divided-down voltage is provided to a voltage sensor within the digital controller. The voltage sensor level shifts the provided voltage, and buffers the resulting level-shifted voltage. The buffered, level-shifted voltage is provided to a tracking analog-to-digital converter (ADC) for digitization. The buffered signal provided to the tracking ADC has a high current capability, such that the voltage input to the tracking ADC may quickly converge before the tracking ADC outputs a digital value for the sensed secondary-side voltage.