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:
Feb. 08, 2011
Filed:
Jun. 30, 2008
Michael Lenz, Zorneding, DE;
Andrei Covalenco, Causeni, MD;
Dan Dinu, Bucharest, RO;
Infineon Technologies Austria AG, Villach, AT;
Abstract
Circuit and method for controlling a high bridge circuit with increased efficiency is disclosed. Circuitry is provided outputting gating signals to a high side driver and a low side driver responsive to a time varying input signal. A frequency measurement circuit determines a high speed mode when the input signal is at a frequency above a threshold, and the gating signal to the high side driver is inhibited. When the input signal frequency is below the threshold, the low side driver and the high side driver gating signals switch alternately. In an exemplary implementation, the frequency measurement circuit is provided as two counters outputting signals to a decision circuit which controls the half bridge circuit. Methods are provided for efficiently providing gating signals to the drivers of a half bridge circuit based upon the frequency of the input signal.