Title:
SYNCHRONOUS BOOST CONVERTER FOR RESTRICTING SWITCHING VOLTAGE IN SHUTDOWN STATE OF POWER IC FOR DRIVING AMOLED
Document Type and Number:
WIPO Patent Application WO/2012/033249
Kind Code:
A1
Abstract:
A synchronous boost converter circuit for restricting switching voltage in a shutdown state of a power IC for driving an AMOLED of the present invention comprises: a power source (410) for generating an input voltage (Vin); an inductor (420) which is connected to the power source (410) to generate an inductor current (IL); switching transistors which include power switching elements connected to a switching node (N1) for receiving the inductor current (IL) first and transfer switching elements connected between the switching node (N1) and an output node (N2) to transfer the inductor current (IL) received from the switching node (N1) to the output node (N2); a boosting control unit (435) for restricting a sudden rise of a switching voltage (Vsw) applied to the switching node (N1) in a shutdown state of an integrated circuit (IC);
a first gate driver (431) for controlling gate voltages of the power switching elements; a second gate driver (432) for controlling gate voltages of the transfer switching elements; and a control circuit unit (433) which applies control signals to the first gate driver (431) and the second gate driver (432) in the shutdown state of the IC to enable the boosting control unit (435) to restrict the sudden rise of the switching voltage (Vsw).
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Inventors:
PARK, Young Seung (1 CastleGoldPark, Hwanggeum-dong Suseong-gu, Daegu 706-040, 706-040, KR)
박용승 (대구광역시 수성구 황금동 캐스골드파크 1307동 1103호, 706-040 Daegu, 706-040, KR)
KWON, Byung Sup (305-401 Daecheong Apt, Gaepo-dong Gangnam-gu, Seoul 135-940, 135-940, KR)
권병섭 (서울특별시 강남구 개포동 대청아파트 305동 401호, 135-940 Seoul, 135-940, KR)
박용승 (대구광역시 수성구 황금동 캐스골드파크 1307동 1103호, 706-040 Daegu, 706-040, KR)
KWON, Byung Sup (305-401 Daecheong Apt, Gaepo-dong Gangnam-gu, Seoul 135-940, 135-940, KR)
권병섭 (서울특별시 강남구 개포동 대청아파트 305동 401호, 135-940 Seoul, 135-940, KR)
Application Number:
KR2010/006530
Publication Date:
March 15, 2012
Filing Date:
September 27, 2010
Export Citation:
Assignee:
LDT INC (3F M Plaza 538, Dujeong-dongSeobuk-gu, Cheonan-si, Chungcheongnam-do 331-210, 331-210, KR)
주식회사 엘디티 (충청남도 천안시 서북구 두정동 538 엠프라자 3층, 331-210 Chungcheongnam-do, 331-210, KR)
PARK, Young Seung (1 CastleGoldPark, Hwanggeum-dong Suseong-gu, Daegu 706-040, 706-040, KR)
박용승 (대구광역시 수성구 황금동 캐스골드파크 1307동 1103호, 706-040 Daegu, 706-040, KR)
KWON, Byung Sup (305-401 Daecheong Apt, Gaepo-dong Gangnam-gu, Seoul 135-940, 135-940, KR)
주식회사 엘디티 (충청남도 천안시 서북구 두정동 538 엠프라자 3층, 331-210 Chungcheongnam-do, 331-210, KR)
PARK, Young Seung (1 CastleGoldPark, Hwanggeum-dong Suseong-gu, Daegu 706-040, 706-040, KR)
박용승 (대구광역시 수성구 황금동 캐스골드파크 1307동 1103호, 706-040 Daegu, 706-040, KR)
KWON, Byung Sup (305-401 Daecheong Apt, Gaepo-dong Gangnam-gu, Seoul 135-940, 135-940, KR)
International Classes:
G09G3/30
Attorney, Agent or Firm:
LEE, Cheol Hee (Guardian International Patent & Law Office 2F, Woo Kyeong Bldg. 156-13, Samseong-dong,Kangnam-ku, Seoul 135-090, 135-090, KR)
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