Title:
LED CURRENT CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2016/065573
Kind Code:
A1
Abstract:
A method and apparatus comprises regulating, by a modulator (106) of a LED controller (150), a plurality of current sinks (161,171,181) to operate in a linear region of a current-to-voltage curve which is associated with a constant value of resistance (110,112,114), wherein each current sink (161,171,181) is coupled to each of a plurality of LED strings (160,170,180), receiving, by the modulator (106), information of first current flowing through each of a plurality of LED strings (160,170,180), processing, by a control logic (104) coupled to the modulator (106), the information of the first current, and based on the processed information of the first current, providing, by the control logic (104), at least two choices of information of second current that is to be flown through each respective LED string (160,170,180).
Inventors:
JIN GUOFENG (CN)
RUAN CHENJIE (CN)
RUAN CHENJIE (CN)
Application Number:
PCT/CN2014/089889
Publication Date:
May 06, 2016
Filing Date:
October 30, 2014
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN (JP)
TEXAS INSTRUMENTS JAPAN (JP)
International Classes:
H05B37/02; H05B44/00
Foreign References:
| US20110068700A1 | 2011-03-24 | |||
| CN102036449A | 2011-04-27 | |||
| CN202275588U | 2012-06-13 | |||
| CN103440848A | 2013-12-11 | |||
| CN102821526A | 2012-12-12 | |||
| CN102026442A | 2011-04-20 | |||
| US8288953B1 | 2012-10-16 |
Attorney, Agent or Firm:
JEEKAI & PARTNERS (Jinyu Tower A129A129 West Xuan Wu Men Street, Xicheng District, Beijing 1, CN)
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