Title:
分離されたマルチチャンネル出力を有する単一インバータ回路によるＬＥＤドライバ
Document Type and Number:
Japanese Patent JP5586622
Kind Code:
B2
Abstract:
A single-converter circuit-based LED driver circuit (10) with isolated multi-channel outputs is disclosed. The circuit (10) includes an IC control circuit (11), a plurality of isolated output channels (70, 74) each having an output current sensing and conditioning circuit (74, 90), and an output current regulation circuit (128). The output current regulation circuit (128) includes a voltage-sensing transformer winding (T4) that senses an output voltage level across a secondary side of the circuit (10), and a peak output current sensing component (156) that senses output currents from the isolated output channels and determines which channel has a highest current output. Additionally, the circuit (10) facilitates providing output current regulation when detected output voltage is below a predetermined threshold, and providing output current regulation when the detected output voltage is above the predetermined threshold.
Inventors:
A chain, Timothy
Scully, James Kay
Scully, James Kay
Application Number:
JP2011536381A
Publication Date:
September 10, 2014
Filing Date:
November 02, 2009
Export Citation:
Assignee:
General Electric Co.
International Classes:
H01L33/00; H05B37/02; H05B44/00
Attorney, Agent or Firm:
Satoshi Arakawa
Hiroshi Ogura
Toshihisa Kurokawa
Hiroshi Ogura
Toshihisa Kurokawa