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. 05, 2010
Filed:
Sep. 28, 2004
Laurent Guillott, Seysses, FR;
Philippe Rosado, Fonsorbes, FR;
Pierre Turpin, Toulouse, FR;
Francoise Vareilhias, Toulouse, FR;
Uli Joos, Nonnenhorn, DE;
Josef Schnell, Wasserburg, DE;
Laurent Guillott, Seysses, FR;
Philippe Rosado, Fonsorbes, FR;
Pierre Turpin, Toulouse, FR;
Francoise Vareilhias, Toulouse, FR;
Uli Joos, Nonnenhorn, DE;
Josef Schnell, Wasserburg, DE;
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
Power supply apparatus with overload protection comprising a switch responsive to an input signal for switching between an ON-state for supplying current from a source of power to a load and an OFF-state for interrupting the supply of current to the load, and protection means responsive to an overload condition to switch the switch to the OFF-state. The protection means is responsive to a first overload condition during an initial phase after the switch switches to the ON-state so as to switch the switch back to the OFF-state and maintain the switch in the OFF-state. The protection means is subsequently responsive to a second overload condition if the first overload condition is not detected during the initial phase so as to switch the switch to the OFF-state and subsequently switch the switch back to the ON-state after an interval of time. The protection means is responsive to the current exceeding a first threshold value in detecting the first overload condition, and is responsive to the current exceeding a second threshold value in detecting the second overload condition, the second threshold value being lower than the first threshold value. The protection means is responsive to a temperature of the switch means exceeding a temperature threshold value in detecting at least the first overload condition.