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:
Nov. 23, 2010
Filed:
Jun. 18, 2009
Chan Woong Park, Seoul, KR;
Chan Woong Park, Seoul, KR;
Power Integrations, Inc., San Jose, CA (US);
Abstract
Techniques are disclosed to regulate an output current through a load coupled to a power converter using a current source coupled to the load. For instance, one power converter according to the teachings of the present invention includes an energy transfer element coupled between an input of the power converter and an output of the power converter. A power converter controller is coupled to the energy transfer element to control a transfer of energy from the input of the power converter to the output of the power converter. A load is to be coupled to the output of the power converter. A current source is to be coupled to the load. The current source regulates the current flowing through the load to a threshold current value. The current source is coupled to sense a current through the load. A switch having a first and second end is also included. The first end is to be coupled to the load and the second end is coupled to the current source. The switch is coupled to be switched on and off at a duty cycle to control an average current through the load. The current through the load is substantially equal to a current through the switch and the current source.