Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DRIVING CIRCUIT, ILLUMINATION LIGHT SOURCE, AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/122891
Kind Code:
A1
Abstract:
A driving circuit (1), provided with a voltage conversion circuit (1A) and a rectifying and smoothing circuit (11) for rectifying an AC dimming signal. The voltage conversion circuit (1A) is provided with: a switch element (SW1) having a source connected to the low-potential output terminal of the rectifying and smoothing circuit (11); a diode (D2) having an anode connected to the high-potential output terminal of the rectifying and smoothing circuit (11); an inductor (L31) disposed between the drain of the switch element (SW1) and the diode (D2); an oscillation controller (12); a capacitor (C3) which is charged by the magnetic energy of the inductor (L31) being transferred when the switch element (SW1) is in an OFF state, and discharged toward the load (4) when the switch element (SW1) is in an ON state; and a power supply control circuit (15) for supplying, to the oscillation controller (12), a voltage corresponding to the voltage of the high-potential-side terminal of the capacitor (C3) as a power supply voltage for driving the oscillation controller (12).

Inventors:
ITOH KAZUHIKO
TAKAHASHI AKIRA
MURAKAMI MASANOBU
Application Number:
JP2014/000288
Publication Date:
August 14, 2014
Filing Date:
January 21, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
PANASONIC CORP (JP)
International Classes:
H05B37/02; H01L33/00; H02M3/155
Foreign References:
JP2012084489A2012-04-26
JP2013026079A2013-02-04
JP2011108529A2011-06-02
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
New house Extensive 守 (JP)
Download PDF:



 
Previous Patent: HEAT EXCHANGER

Next Patent: SEMICONDUCTOR MODULE