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:
Sep. 20, 2005
Filed:
Oct. 22, 2003
Technique for measuring temperature and current via a mosfet of a synchronous buck voltage converter
Applicant:
Lawrence G. Pearce, Palm Bay, FL (US);
Inventor:
Lawrence G. Pearce, Palm Bay, FL (US);
Assignee:
Intersil Americas Inc., Milpitas, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K003/42 ;
U.S. Cl.
CPC ...
Abstract
In order to derive a precise measurement of temperature and current in a synchronous buck DC-DC converter a synchronous conduction cycle measurement of the value of reverse conduction voltage (V), and an asynchronous conduction cycle measurement of the value of body diode conduction voltage (V) of the low side power MOSFET are performed. These two measured values are then used as dual inputs to a two-dimensional to two-dimensional transform function (e.g., look-up table) that is effective to map the measured voltage values into output values for current (I) and temperature (T).