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:
Aug. 09, 2005
Filed:
Aug. 08, 2003
Jae-soon Choi, Seoul, KR;
Jea-gon Seo, Bucheon, KR;
Dong-young Huh, Bucheon, KR;
Dong-hee Kim, Incheon, KR;
Jae-Soon Choi, Seoul, KR;
Jea-Gon Seo, Bucheon, KR;
Dong-Young Huh, Bucheon, KR;
Dong-Hee Kim, Incheon, KR;
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Abstract
An inverter driver comprises: an inverter circuit including first and second switches, inverting DC components into AC components in response to switching by the first and second switches to drive a load; a control signal supply outputting a first voltage corresponding to a voltage caused by sensing the current flowing to the load, and outputting a second voltage, and a third voltage generated by multiplying the first voltage by a gain; a frequency controller including a capacitor and an oscillator, controlling a first current charged in/discharged from the capacitor through the oscillator in response to the first voltage; and a duty controller comparing the third voltage and a fourth voltage charged in the capacitor, and controlling the duty of the first and second switches.