Forward converter having a primary-side current sense circuit

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United States of America Patent

PATENT NO RE46715
SERIAL NO

15347484

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Abstract

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A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) comprises an isolated forward converter comprising a transformer, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The forward converter comprises a sense resistor coupled in series with the primary winding for producing the sense voltage that is representative of the primary current. The current sense circuit receives the sense voltage and averages the sense voltage when the semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.

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Patent Owner(s)

Patent OwnerAddress
LUTRON TECHNOLOGY COMPANY LLC7200 SUTER ROAD COOPERSBURG PA 18036

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Veskovic, Dragan Allentown, US 49 1671

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