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:
Apr. 03, 2012
Filed:
Sep. 15, 2008
Masaharu Yamaji, Matsumoto, JP;
Akio Kitamura, Matsumoto, JP;
Masaharu Yamaji, Matsumoto, JP;
Akio Kitamura, Matsumoto, JP;
Fuji Electric Co., Ltd., , JP;
Abstract
A semiconductor device can output a reference voltage for an arbitrary potential and can detect the voltage of each cell in a battery including multiple cells very precisely. The device includes a depletion-type MOSFETand an enhancement type MOSFET, and has a floating structure that isolates depletion-type MOSFETand enhancement type MOSFETfrom a ground terminal. The depletion-type MOSFETand enhancement type MOSFETare connected in series to each other, wherein the depletion-type MOSFETis connected to high-potential-side terminal and the enhancement type MOSFETis connected to low-potential-side terminal. The semiconductor device having the configuration described above is disposed in a voltage detecting circuit section in a control IC for a battery including multiple cells.