An LED Drive Circuit with Constant-Output-Current Control and Constant-Luminance Control

• Nishikawa Masahiro

• Ishizuka Yoichi

• Matsuo Hirofumi

• Shigematsu Koichi

抄録

A Single LED is very small, and their luminance is related to the amount of driving current. Sufficient luminance for an illuminator requires many LEDs to be connected together and a constant current supplied to each LED. Therefore, the LED drive circuit must have constant-output-current control and/or constant-luminance control. We propose an LED drive circuit that consists of a boost-type DC-DC converter with constant-output-current control and constant-luminance control. This circuit is a switching regulator-type circuit controlled by pulse width modulation (PWM). Both the power and the constant-current control can be provided by a single system, without any ballast resistor or auxiliary current control circuit.INTELEC 06 - Twenty-Eighth International Telecommunications Energy Conference : Providence, RI, USA, 2006.9.10-2006.9.10

収録刊行物

• INTELEC 06 - Twenty-Eighth International Telecommunications Energy Conference

  INTELEC 06 - Twenty-Eighth International Telecommunications Energy Conference (2006), 1-6, 2006-11

  IEEE

詳細情報

• CRID: 1573950402585697280
• NII論文ID: 120006983694
• NII書誌ID: AA11087061
• ISSN: 02750473
• Web Site: http://hdl.handle.net/10069/22596
• 本文言語コード: en
• データソース種別:
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