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:
Nov. 18, 2014
Filed:
Feb. 17, 2012
David C. G. Tournatory, San Francisco, CA (US);
David C. G. Tournatory, San Francisco, CA (US);
Quantance, Inc., San Mateo, CA (US);
Abstract
High bandwidth, low noise switching power supply operating in quasi-resonant mode for filtering switching harmonic noise, while providing a fast control bandwidth and power at high efficiency. The power supply has an LCL tank defining a resonance period T, and a switching circuit regulation loop for turning on its switching circuit for on-time tcommencing at a time based on a state of regulation of the power supply. A switching capacitor current sensor triggers the switching circuit to turn off at the end of the resonance period T, whereupon the switching and output inductors enter a discharging phase for a period not related to resonance period T. 'Quasi-resonant' operation, where the power supply is in resonant mode during on time tand not in resonant mode during off time tensures that the output inductor filters the switching harmonic noise of the switching circuit.