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. 02, 1996
Filed:
Dec. 17, 1993
Nicky M Johnson, Los Altos, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A structure for preventing simultaneous conduction in the power transistors of an output circuit of an audio system includes an auxiliary device in each of the high side control and low side control circuits controlling the power transistors. The auxiliary device in the high side control circuit is turned on simultaneously with the high side power transistor to provide a control signal to the low side control circuit, thereby turning off the low side power transistor. Conversely, the auxiliary device in the low side control circuit is turned on simultaneously with the low side power transistor to provide a control signal to the high side control circuit, thereby turning off the high side power transistor. Thus, simultaneous conduction in the high and low side power transistors is prevented.