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. 09, 2002
Filed:
Dec. 05, 2000
Toshiro Okubo, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A balanced transformer-less (BTL) power drive circuit comprises a push-pull type output transistor section connected with a main power supply PowVcc, and an input control section connected with an auxiliary power supply for providing the output transistor section with a control signal. The potential of the auxiliary power supply is selectively set equal to or above the supply potential of the main power supply, depending on the requirements for the dynamic range of the power drive circuit. In accord with the potential of the auxiliary power supply thus set, the output reference potential Vref is set to the medium of the dynamic range, thereby ensuring the linearity of the input-output characteristic of the drive circuit, irrespective of the selected level of the auxiliary power supply.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile