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. 20, 2001
Filed:
Oct. 28, 1998
Ryan H. Mongan, San Carlos, CA (US);
Speculative Incorporated, Palo Alto, CA (US);
Abstract
A method and apparatus is provided for monitoring and controlling the temperature at the heat producing portion of an electrical current carrying device without direct measurement at the heat producing site. An integrated circuit,is thermally attached to a plurality of heat dissipating paths; top side heat conduction path,, bottom side heat conduction path,, and board level heat conduction path,. On one of the heat conduction paths exists a heat flow sensor. This sensor is comprised of an inner thermistor,and an outer thermistor,. The measured heat flow is combined with a single point temperature measurement and the thermal conductivity between the heat source and the temperature measurement point to produce the temperature at the heat source. This temperature is monitored in order to keep the temperature of the electrical current carrying device below critical levels or within a specified range.