Title:
調光可能LEDドライバ、および、その制御方法
Document Type and Number:
Japanese Patent JP2014514912
Kind Code:
A
Abstract:
A dimmable LED driver adapted to be operated with a dimmer that is configured to generate a predetermined conductive angle, wherein the dimmable LED driver comprises: a rectifier configured to convert an alternating current output by the dimmer to a direct current, a buck PFC block configured to adjust an output voltage of the direct current so as to obtain a stable output voltage, a second buck DC/DC block configured to realize output of a constant current after the stable output voltage is realized, a dimming block configured to, after realizing output of the constant current, accomplish a dimming function jointly with the second buck DC/DC block, and an MCU configured to control the buck PFC block, the second buck DC/DC block and the dimming block.
Inventors:
Luka Boldin
Yuri Chen
Wait tan
Sijung Nie
Xiaoping Chen
Yuri Chen
Wait tan
Sijung Nie
Xiaoping Chen
Application Number:
JP2014509673A
Publication Date:
June 19, 2014
Filing Date:
May 03, 2012
Export Citation:
Assignee:
OSRAM GmbH
International Classes:
H02M3/155; H05B44/00; H01L33/00
Domestic Patent References:
| JP2010268676A | 2010-11-25 | |||
| JP2003158877A | 2003-05-30 | |||
| JPH07115774A | 1995-05-02 | |||
| JPH05219743A | 1993-08-27 | |||
| JP2008104273A | 2008-05-01 |
Foreign References:
| US20070182338A1 | 2007-08-09 | |||
| US20110080110A1 | 2011-04-07 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Takuya Kuno