Title:
LED、OLED又はレーザダイオードのような負荷のための駆動回路
Document Type and Number:
Japanese Patent JP5409399
Kind Code:
B2
Abstract:
A driver circuit for driving loads such as LED, OLED or LASER diode devices includes a switching converter that has a switching element and reactive elements to provide an output switching voltage by sequential switching operations of the switching element. The load is connected to the output switching voltage. A linear current driver circuit is connected in series to the load and includes an amplification element and a feedback circuit with a current control input. In order to enable the circuit to be easily used, a control unit is provided with a sensing input for a current or voltage at the linear current driver. A microcontroller executes a control program for processing the sensing input and providing both a current control output and a switching control output, set in accordance with a set current value.
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Inventors:
Deppe Karsten
Wentz Matias
Wentz Matias
Application Number:
JP2009553258A
Publication Date:
February 05, 2014
Filing Date:
March 12, 2008
Export Citation:
Assignee:
KONINKLIJKE PHILIPS N.V.
International Classes:
H05B37/02; H05B44/00; H01L33/00; H01L51/50; H02M3/155
Domestic Patent References:
| JP2005318787A | ||||
| JP2005191528A | ||||
| JP2003332624A |
Attorney, Agent or Firm:
Susumu Tsugaru
Fueda Shusen
Sakiko Shibata
Fueda Shusen
Sakiko Shibata