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:
Feb. 14, 2017
Filed:
Aug. 11, 2015
Infineon Technologies Austria Ag, Villach, AT;
Mingping Mao, Singapore, SG;
Xiaowu Gong, Singapore, SG;
Infineon Technologies Austria AG, Villach, AT;
Abstract
A blanking time for a switch-mode power supply controller includes a first blanking time interval and a second blanking time interval. During the first blanking time interval, the time to charge the feedback voltage at the feedback input of the switch-mode power supply is measured, and a timer setting time is stored based on the measured time. During the second time interval, a series of charge cycles is used. At each charge cycle, the feedback voltage is discharged and then allowed to charge. If, after being discharged, the feedback voltage reaches a voltage threshold during the timer setting time, a counter value is incremented and the next cycle begins. If the feedback voltage does not reach the voltage threshold within the timer setting time, the blanking time ends. If the counter value reaches a count threshold, a shutdown mode is initiated.