CN118975406A - 发光元件驱动装置、发光控制装置、发光装置 - Google Patents

发光元件驱动装置、发光控制装置、发光装置 Download PDF

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Publication number
CN118975406A
CN118975406A CN202380031521.0A CN202380031521A CN118975406A CN 118975406 A CN118975406 A CN 118975406A CN 202380031521 A CN202380031521 A CN 202380031521A CN 118975406 A CN118975406 A CN 118975406A
Authority
CN
China
Prior art keywords
current
signal
light emitting
emitting element
side switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202380031521.0A
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English (en)
Chinese (zh)
Inventor
青木启
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rohm Co Ltd
Original Assignee
Rohm Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rohm Co Ltd filed Critical Rohm Co Ltd
Publication of CN118975406A publication Critical patent/CN118975406A/zh
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/54—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a series array of LEDs

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
CN202380031521.0A 2022-03-31 2023-02-17 发光元件驱动装置、发光控制装置、发光装置 Pending CN118975406A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2022060370 2022-03-31
JP2022-060370 2022-03-31
PCT/JP2023/005649 WO2023188964A1 (ja) 2022-03-31 2023-02-17 発光素子駆動装置、発光制御装置、発光装置

Publications (1)

Publication Number Publication Date
CN118975406A true CN118975406A (zh) 2024-11-15

Family

ID=88200283

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202380031521.0A Pending CN118975406A (zh) 2022-03-31 2023-02-17 发光元件驱动装置、发光控制装置、发光装置

Country Status (5)

Country Link
US (1) US20250024568A1 (https=)
JP (1) JPWO2023188964A1 (https=)
CN (1) CN118975406A (https=)
DE (1) DE112023001176T5 (https=)
WO (1) WO2023188964A1 (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118975112A (zh) * 2022-03-31 2024-11-15 罗姆股份有限公司 半导体装置、模块
EP4642164A1 (en) * 2024-04-24 2025-10-29 Tridonic GmbH & Co. KG Led driver for supplying an led load with a dc voltage
CN119789266A (zh) * 2025-03-11 2025-04-08 华源智信半导体(深圳)有限公司 Led驱动电路及电子设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100867551B1 (ko) * 2007-05-18 2008-11-10 삼성전기주식회사 Ｌｅｄ 어레이 구동 장치
JP7345326B2 (ja) 2019-09-06 2023-09-15 ローム株式会社 発光素子駆動装置

Also Published As

Publication number Publication date
US20250024568A1 (en) 2025-01-16
DE112023001176T5 (de) 2024-12-19
JPWO2023188964A1 (https=) 2023-10-05
WO2023188964A1 (ja) 2023-10-05

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