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.

Date of Patent:
Mar. 15, 2016

Filed:

Aug. 01, 2013
Applicant:

National Instruments Corporation, Austin, TX (US);

Inventor:

Jeffrey A. Cornell, Austin, TX (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/32 (2007.01); H02M 1/36 (2007.01);
U.S. Cl.
CPC ...
H02M 3/3353 (2013.01); H02M 1/32 (2013.01); H02M 1/36 (2013.01);
Abstract

A power converter may have an input stage that includes a pair of transformer coils, switching circuitry to energize the pair of transformer coils according to an input supply voltage provided by an input source, and a limiting circuit coupled between the pair of transformer coils to cause the input stage to stop drawing current from the input source once the amount of charge drawn from the input source reaches a specific value. An output stage of the power converter may receive energy from the pair of transformer coils, and convert the received energy into an output supply voltage. The pair of transformer coils may continue providing energy stored in a leakage inductance of the pair of transformer coils to the output stage for at least a period of time, once the limiting circuit has caused the input stage to stop drawing current from the input supply.


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