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:
Sep. 20, 2016
Filed:
Dec. 21, 2012
Lg Display Co., Ltd., Seoul, KR;
Postech Academy-industry Foundation, Pohang-si, Gyeongsangbuk-do, KR;
Kyung-Min Lee, Daejeon, KR;
Joung-Woo Lee, Seoul, KR;
Bong-Koo Kang, Pohang-si, KR;
Chang-Hyun Sung, Daegu, KR;
Ho-Young Yoon, Ansan-si, KR;
LG Display Co., Ltd., Seoul, KR;
Postech Academy-Industry Foundation, Pohang-Si, Gyeongbuk, KR;
Abstract
A DC-DC converter control circuit with enhanced driving efficiency while securing circuit stability during light-load driving of the DC-DC converter through variation of an on/off duty ratio of a burst mode according to load. The control circuit includes a detection unit for detecting an amount of current and a voltage at an output stage of a DC-DC converter, and generating and outputting a differential voltage according to a level of the detected voltage, a comparison unit for comparing the differential voltage with a reference voltage having a triangle or sawtooth waveform, thereby generating a duty signal, and a converter controller for generating an on/off control signal corresponding to a duty ratio of the duty signal, and supplying the on/off control signal to the DC-DC converter, to control on/off of the DC-DC converter.