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:
Feb. 02, 1999
Filed:
Jun. 06, 1997
Akira Baba, Susono, JP;
Takaaki Izawa, Susono, JP;
Yazaki Corporation, Tokyo, JP;
Abstract
A switching device which can reduce effectively noise that is generated from a charge pump used to generate a drive voltage for driving a plurality of semiconductor switches. In the switching device, the charge pump used to generate the drive voltage for operating the plurality of the semiconductor switches is shared in common by these semiconductor switches, and the plurality of the semiconductor switches can be driven by the drive voltage that is generated by the single charge pump. Due to this structure, the noise to be generated by the charge pump can be controlled to a minimum and the noise interfering into the power line can be removed by a single noise remove circuit, which makes it possible to simplify the structure of the switching device.