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. 01, 2019
Filed:
May. 14, 2018
Power Integrations, Inc., San Jose, CA (US);
Vikram Balakrishnan, Mountain View, CA (US);
Giao Minh Pham, Milpitas, CA (US);
Ricardo Luis Janezic Pregitzer, Campbell, CA (US);
Peter Vaughan, Los Gatos, CA (US);
Power Integrations, Inc., San Jose, CA (US);
Abstract
A power converter controller includes a drive circuit to generate a drive signal to control switching of a power switch. The drive circuit generates the drive signal in response to a current sense signal, a current limit signal, a frequency skip signal, and a hold signal. A current limit generator generates the current limit signal in response to a load. A frequency detection circuit generates the frequency skip signal in response to the drive signal to indicate when an intended frequency of the drive signal is within a frequency window. The current limit signal remains fixed for at least a switching cycle when the intended frequency is within the frequency window. A first latch generates the hold signal to control the current limit generator to hold the current limit signal. The first latch generates the hold signal in response to the frequency skip signal and a feedback signal.