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. 08, 2016
Filed:
Sep. 18, 2013
Dc-to-dc converter controllers including over-current protection, and associated systems and methods
Volterra Semiconductor Corporation, Fremont, CA (US);
Sombuddha Chakraborty, Redwood City, CA (US);
Luigi Panseri, Pleasanton, CA (US);
Volterra Semiconductor LLC, San Jose, CA (US);
Abstract
A DC-to-DC converter includes a switching circuit, an energy storage inductor electrically coupled to the switching circuit, and a controller. The controller includes a control signal generator, a current sensing subsystem, an over-current detection subsystem, and filter logic. The control signal generator generates unfiltered control signals to control the switching circuit, and the current sensing subsystem senses current flowing through the energy storage inductor. The over-current detection subsystem asserts an over-current signal if a magnitude of positive current flowing through the energy storage inductor exceeds a maximum permissible value. The filter logic filters the unfiltered control signals to generate filtered control signals in response to assertion of the over-current signal, such that respective widths of one or more pulses of the filtered control signals are less than respective widths of corresponding pulses of the unfiltered control signals.