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. 14, 2020
Filed:
Mar. 27, 2019
Semiconductor Components Industries, Llc, Phoenix, AZ (US);
Petr Papica, Frenstat Pod Radhostem, CZ;
Martin Podzemny, Lensa, CZ;
Martin Kejhar, Roznov Pod Radhostem, CZ;
Jakub Tomanek, Budejovice, CZ;
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Abstract
A power converter includes a primary controller having a control voltage terminal for receiving electrical power and a monitor terminal electrically coupled to an input sensing node with an input voltage varying periodically below a first start threshold voltage to define valleys. The power converter includes a first current source configured to drive a first electrical current from the monitor terminal to the control voltage terminal in response to the input voltage being less than the first start threshold voltage. A delay timer delays driving the first electrical current to center a supply time interval within a valley. A second current source drives a second electrical current from the monitor terminal to the control voltage terminal in response to the input voltage being less than a second start threshold voltage to reduce an impedance of the monitor terminal when the input voltage is in a valley.