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:
Jan. 26, 2016
Filed:
Dec. 02, 2013
Applicant:
Black & Decker Inc., Newark, DE (US);
Inventor:
Jongsoo Lim, Timonium, MD (US);
Assignee:
Black & Decker Inc., New Britain, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/26 (2006.01); H02P 6/14 (2006.01); B25F 5/00 (2006.01); B25C 1/06 (2006.01);
U.S. Cl.
CPC ...
H02P 6/14 (2013.01); B25C 1/06 (2013.01); B25F 5/00 (2013.01);
Abstract
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.