Bootstrap circuit and control system for a power tool

An electronic circuit for a power tool includes a plurality of high-side and low-side switches connected in series between terminals of a power source and coupled to a load, a bootstrap circuit comprising a plurality of bootstrap capacitors arranged to provide sufficient amount of drive voltage to t...

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Bibliographic Details
Main Author LIM JONGSOO
Format Patent
LanguageEnglish
Published 26.01.2016
Subjects
COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDEDFOR
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOTPARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOTOTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
HAND TOOLS
HAND-HELD NAILING OR STAPLING TOOLS
MANIPULATORS
MANUALLY OPERATED PORTABLE STAPLING TOOLS
PERFORMING OPERATIONS
PORTABLE POWER-DRIVEN TOOLS
TRANSPORTING
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Summary:An electronic circuit for a power tool includes a plurality of high-side and low-side switches connected in series between terminals of a power source and coupled to a load, a bootstrap circuit comprising a plurality of bootstrap capacitors arranged to provide sufficient amount of drive voltage to turn ON and OFF the plurality of high-side switches, and a control unit configured to turn ON and OFF the plurality of low-side switches in succession to sequentially charge the bootstrap capacitors.
Bibliography:Application Number: US201314094160