Title:
LEDを駆動するための単一段のディジタル電力コンバータ
Document Type and Number:
Japanese Patent JP2008537459
Kind Code:
A
Abstract:
This invention presents a single-stage power converter for driving many number of Light-Emitting-Diode (LED). The power converter converts an AC input voltage into DC current source and regulates the current flowing into the LED. In addition, the AC input current is controlled to have a sinusoidal waveform synchronized with the AC input voltage so that AC input Power Factor is corrected. Hence, both of Power Factor Correction (PFC) and LED current regulation are obtained simultaneously by using a single power conversion stage. So higher efficiency with low cost can be obtained.
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Inventors:
Oinhwan
Raya Bali Madu
Raya Bali Madu
Application Number:
JP2008503101A
Publication Date:
September 11, 2008
Filing Date:
March 22, 2006
Export Citation:
Assignee:
Fairchild Semiconductor Corporation
International Classes:
H02M7/12; H01L33/00
Domestic Patent References:
| JPH1167471A | 1999-03-09 | |||
| JP2004327152A | 2004-11-18 | |||
| JP2000308253A | 2000-11-02 | |||
| JPH07303331A | 1995-11-14 |
Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda