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:
Oct. 28, 2014
Filed:
Jun. 29, 2012
Applicants:
Marc Sabut, Eybens, FR;
Severin Trochut, Gilly sur Isere, FR;
Christophe Curis, Grenoble, FR;
Inventors:
Assignees:
STMicroelectronics SA, Montrouge, FR;
STMicoelectronics (Grenoble 2) SAS, Grenoble, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 7/08 (2006.01); H02M 3/156 (2006.01);
U.S. Cl.
CPC ...
H03K 7/08 (2013.01); H02M 3/156 (2013.01);
Abstract
A pulse width modulation device includes a switching transistor for defining modulation phases, a capacitor, and switches arranged to: a) in a first phase, charge the capacitor to a voltage corresponding to the on/off threshold of the switching transistor, and b) in a second phase, connect the capacitor between a terminal for applying a setpoint voltage and the gate of the switching transistor. A constant current source is connected to apply a current in the capacitor tending to bring the gate of the switching transistor toward the on/off threshold.