JP7298514B2 - 発光素子用駆動装置 - Google Patents
発光素子用駆動装置 Download PDFInfo
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- JP7298514B2 JP7298514B2 JP2020036305A JP2020036305A JP7298514B2 JP 7298514 B2 JP7298514 B2 JP 7298514B2 JP 2020036305 A JP2020036305 A JP 2020036305A JP 2020036305 A JP2020036305 A JP 2020036305A JP 7298514 B2 JP7298514 B2 JP 7298514B2
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- current
- emitting element
- constant current
- light emitting
- light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Description
VSENSE=VREF ・・・(1)
Iout=(R1/R2)×I1 ・・・(2)
Claims (2)
- カソード端子が共通ラインに接続された発光素子を駆動させる駆動装置であって、
電源側から定電流を吸い込み可能であると共に、前記定電流の吸い込み時間の幅を変更可能な吸い込み電流式ドライバ集積回路と、
前記吸い込み電流式ドライバ集積回路に吸い込まれる前記定電流を吐き出し定電流に変換して前記発光素子へ出力する電流変換回路と、
を備え、
前記電流変換回路は、前記吸い込み電流式ドライバ集積回路に吸い込まれる前記定電流をリファレンス電流にして前記吐き出し定電流を生成するカレントミラー回路を有し、
前記カレントミラー回路は、
前記リファレンス電流が流れる第一抵抗と、
前記吐き出し定電流が流れる第二抵抗と、
を有し、
前記第二抵抗の抵抗値は、前記第一抵抗の抵抗値に比して小さい、発光素子用駆動装置。 - 前記電流変換回路は、集積回路化されている、請求項1に記載された発光素子用駆動装置。
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JP2020036305A JP7298514B2 (ja) | 2020-03-03 | 2020-03-03 | 発光素子用駆動装置 |
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JP2020036305A JP7298514B2 (ja) | 2020-03-03 | 2020-03-03 | 発光素子用駆動装置 |
Publications (2)
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JP2021140904A JP2021140904A (ja) | 2021-09-16 |
JP7298514B2 true JP7298514B2 (ja) | 2023-06-27 |
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JP2020036305A Active JP7298514B2 (ja) | 2020-03-03 | 2020-03-03 | 発光素子用駆動装置 |
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JP (1) | JP7298514B2 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003188465A (ja) | 2001-10-11 | 2003-07-04 | Hamamatsu Photonics Kk | 発光素子駆動回路 |
JP2010067673A (ja) | 2008-09-09 | 2010-03-25 | Mitsumi Electric Co Ltd | Led駆動装置 |
-
2020
- 2020-03-03 JP JP2020036305A patent/JP7298514B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003188465A (ja) | 2001-10-11 | 2003-07-04 | Hamamatsu Photonics Kk | 発光素子駆動回路 |
JP2010067673A (ja) | 2008-09-09 | 2010-03-25 | Mitsumi Electric Co Ltd | Led駆動装置 |
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JP2021140904A (ja) | 2021-09-16 |
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