電源回路及びそれを用いたＬＥＤ照明装置

Title:

電源回路及びそれを用いたＬＥＤ照明装置

Document Type and Number:

Japanese Patent JP5929457

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a power circuit that can suppress an inrush current even if an input power supply is recovered after a short interruption.SOLUTION: The power circuit includes: a DC conversion circuit for converting an input voltage to a rated output value to charge a first capacitor; a current control circuit for generating a load current from the charging voltage of the first capacitor; a charge suppression circuit inserted in the charging path to the first capacitor which has a current limiting state to limit an input current and a current passing state to lift the limitation and is configured to maintain the current passing state for a predetermined period after an input voltage interruption; and a discharge suppression circuit for instructing the current control circuit to reduce the load current to suppress a discharge of the first capacitor when the charging voltage becomes a set value or less.

Inventors:

Shinichi Suzuki
Yuya Yamazaki

Application Number:

JP2012093639A

Publication Date:

June 08, 2016

Filing Date:

April 17, 2012

Export Citation:

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