STEP-DOWN SWITCHING REGULATOR

PROBLEM TO BE SOLVED: To provide a step-down switching regulator into which a high voltage can be inputted, which can make chip area small, and which can increase response speed. SOLUTION: A supply voltage VL from a first power circuit 4 is inputted via a diode D2 into the positive side power supply...

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Bibliographic Details
Main Author SOMA SHOTARO
Format Patent
LanguageEnglish
Published 11.06.2009
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:PROBLEM TO BE SOLVED: To provide a step-down switching regulator into which a high voltage can be inputted, which can make chip area small, and which can increase response speed. SOLUTION: A supply voltage VL from a first power circuit 4 is inputted via a diode D2 into the positive side power supply input end of a first drive circuit 3 for ON/OFF control of a switching transistor M1. The negative side power supply input end of the first drive circuit 3 is connected to a connection part LX. Furthermore, a bootstrap capacitor C1 is connected between the positive side power supply input end of a first drive circuit 3 and the connection part LX so as to make the supply voltage of the first drive circuit 3 not to be more than a withstand voltage of a low voltage resistance transistor. COPYRIGHT: (C)2009,JPO&INPIT
Bibliography:Application Number: JP20070304055