LOAD CONTROL POWER SUPPLY

PURPOSE:To realize boosting and maintaining the gate electrode voltage of N-channel MOSFET to be used as high-side switch without increasing a chip area and while a high-speed operation is made possible and ON resistance is held low. CONSTITUTION:A capacitor to be charged with electricity, when a so...

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Bibliographic Details
Main Author HIROTA MASAKI
Format Patent
LanguageEnglish
Published 12.02.1993
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
BASIC ELECTRONIC CIRCUITRY
CONTROL OR REGULATION THEREOF
CONTROLLING
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
PHYSICS
PULSE TECHNIQUE
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:PURPOSE:To realize boosting and maintaining the gate electrode voltage of N-channel MOSFET to be used as high-side switch without increasing a chip area and while a high-speed operation is made possible and ON resistance is held low. CONSTITUTION:A capacitor to be charged with electricity, when a source electrode 7 reaches a ground potential, is provided as boosting circuit 11 and a potential detection circuit 12 for monitoring a gate-source voltage Vgs is also provided at an apparatus. When Vgs drops to a predetermined value even while the apparatus operates on full duty, a gate control circuit 13 lowers the potential of a gate electrode 8 by a signal from the potential detection circuit 12 to turn OFF MOSFET1 to restart the boosting circuit 11.
Bibliography:Application Number: JP19910206580