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. 22, 2011
Filed:
Jun. 30, 2008
Maurizio Galvano, Padua, IT;
Giuseppe Bernacchia, Noventa Padovana, IT;
Giovanni Capodivacca, Padua, IT;
Maurizio Galvano, Padua, IT;
Giuseppe Bernacchia, Noventa Padovana, IT;
Giovanni Capodivacca, Padua, IT;
Infineon Technologies Austria AG, Villach, AT;
Abstract
In a circuit, a high side driver control circuit outputs gating signals to a high side driver of a synchronous converter responsive to a pulse width modulated input signal. A synchronous rectifier driver circuit outputs a gating signal to a synchronous rectifier of the synchronous converter responsive to the pulse width modulated input signal. An inhibit circuit inhibits the gating signal to the synchronous rectifier upon detection of a zero crossing condition. A circuit detects the zero crossing condition respective to comparing a measured value to a nominal value adjusted by a delta value. A duty cycle observer circuit determines the average duty cycle of the pulse width modulated input signal and varies the reference value.