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:
Mar. 11, 2008
Filed:
Jun. 29, 2006
Benno Muhlbacher, Bad St. Leonhard, AT;
Joachim Gratz, Dresden, DE;
Evelyne Kricki, Villach, AT;
Thomas Pötscher, Dresden, DE;
Mayk Roehrich, Dresden, DE;
David San Segundo Bello, Villach, AT;
Andreas Weisbauer, Portschach, AT;
Benno Muhlbacher, Bad St. Leonhard, AT;
Joachim Gratz, Dresden, DE;
Evelyne Kricki, Villach, AT;
Thomas Pötscher, Dresden, DE;
Mayk Roehrich, Dresden, DE;
David San Segundo Bello, Villach, AT;
Andreas Weisbauer, Portschach, AT;
Infineon Technologies AG, Munich, DE;
Abstract
A class D power output stage for switching a supply voltage comprises a limiting transistor with a controllable path and a control terminal, a complementary limiting transistor with a controllable path and a control terminal, a switching transistor with a controllable path and a control terminal, and a complementary switching transistor with a controllable path and a control terminal. A switched output signal between the controllable paths of the limiting and complementary limiting transistors can be taped off, the controllable paths of the limiting and the complementary limiting transistors are connected together and are connected to a first and a second supply terminal via the controllable paths of the switching and complementary switching transistors, and the switching and the complementary switching transistors have a lower electrical strength than the limiting and complementary limiting transistors. The output stage further comprises a level matching device for generating control signals in response to an input switching signal. The matching device is connected to the supply voltage and the control signals are fed to the control terminals.