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:
Aug. 30, 2011
Filed:
Nov. 04, 2009
Shohei Osaka, Niiza, JP;
Shohei Osaka, Niiza, JP;
Sanken Electric Co., Ltd., Niiza-shi, JP;
Abstract
A level-shift circuit converts a first voltage level into a second voltage level different from the first voltage level. The level-shift circuit includes a first high-side signal detection circuit, a second high-side signal detection circuit, a drive circuit and electric current detection circuits. The first high-side signal detection circuit sets a logical voltage state of the second voltage level via a first capacitor. The second high-side signal detection circuit resets the logical voltage state of the second voltage level via a second capacitor. The drive circuit on-off drives a high-side switch connected to a low-side switch in series by a set signal of the first high-side signal detection circuit and a reset signal of the second high-side signal detection circuit. The electric current detection circuits detect an electric current flowing into or from the first and/or second capacitors.