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SE2351389A1 - LED driver - Google Patents

LED driver

Info

Publication number
SE2351389A1
SE2351389A1 SE2351389A SE2351389A SE2351389A1 SE 2351389 A1 SE2351389 A1 SE 2351389A1 SE 2351389 A SE2351389 A SE 2351389A SE 2351389 A SE2351389 A SE 2351389A SE 2351389 A1 SE2351389 A1 SE 2351389A1
Authority
SE
Sweden
Prior art keywords
control signal
timer
counter variable
update
timer counter
Prior art date
Application number
SE2351389A
Other versions
SE547837C2 (en
Inventor
Joel Jakobsson
Manne Tallmarken
Original Assignee
SlightLight AB
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 SlightLight AB filed Critical SlightLight AB
Priority to SE2351389A priority Critical patent/SE547837C2/en
Priority to PCT/SE2024/051004 priority patent/WO2025122048A1/en
Publication of SE2351389A1 publication Critical patent/SE2351389A1/en
Publication of SE547837C2 publication Critical patent/SE547837C2/en

Links

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]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/022—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • 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
    • 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
    • H05B45/59—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits for reducing or suppressing flicker or glow effects

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Led Devices (AREA)

Abstract

An LED, Light Emitting Diode, driver (100), comprisinga electric driver output (182'), the LED driver (100) being arranged to provide a current to the electric driver output (182') according to a binary control signal; anda timer function (132'), configured to update a timer counter variable at a timer frequency, the timer function (132') being configured to, for each update, compare the timer counter variable to a set compare value, and the timer function (132') being configured to, in case the timer counter variable has reached the set compare value, cause the binary control signal to switch between a first and second binary state, whereina duration of a repeated control signal pattern of the binary control signal is longer than the time it takes for the timer counter variable to complete a full cycle, and whereinthe LED driver (100) is arranged to update the set compare value at least two times during each individual control signal pattern.
SE2351389A 2023-12-04 2023-12-04 LED driver SE547837C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2351389A SE547837C2 (en) 2023-12-04 2023-12-04 LED driver
PCT/SE2024/051004 WO2025122048A1 (en) 2023-12-04 2024-11-27 Led driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2351389A SE547837C2 (en) 2023-12-04 2023-12-04 LED driver

Publications (2)

Publication Number Publication Date
SE2351389A1 true SE2351389A1 (en) 2025-06-05
SE547837C2 SE547837C2 (en) 2025-12-09

Family

ID=95980209

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2351389A SE547837C2 (en) 2023-12-04 2023-12-04 LED driver

Country Status (2)

Country Link
SE (1) SE547837C2 (en)
WO (1) WO2025122048A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7928956B2 (en) * 2002-11-20 2011-04-19 Gigno Technology Co., Ltd. Digital controlled multi-light driving apparatus and driving-control method for driving and controlling lights
US20140089722A1 (en) * 2002-03-28 2014-03-27 Skyworks Solutions, Inc. Single Wire Serial Interface
US20170034886A1 (en) * 2015-07-27 2017-02-02 Stmicroelectronics S.R.L. Integrated device for adjusting dimming of leds, and control method
US9743475B1 (en) * 2016-03-25 2017-08-22 Anpec Electronics Corporation Operation method for LED dimming device
US10206258B2 (en) * 2017-06-16 2019-02-12 Stmicroelectronics S.R.L. Pulse width modulation pattern generator circuit, corresponding device and method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI430710B (en) * 2011-12-09 2014-03-11 Macroblock Inc An apparatus and a method for driving leds
TW201442554A (en) * 2013-04-24 2014-11-01 Richtek Technology Corp LED driver

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140089722A1 (en) * 2002-03-28 2014-03-27 Skyworks Solutions, Inc. Single Wire Serial Interface
US7928956B2 (en) * 2002-11-20 2011-04-19 Gigno Technology Co., Ltd. Digital controlled multi-light driving apparatus and driving-control method for driving and controlling lights
US20170034886A1 (en) * 2015-07-27 2017-02-02 Stmicroelectronics S.R.L. Integrated device for adjusting dimming of leds, and control method
US9743475B1 (en) * 2016-03-25 2017-08-22 Anpec Electronics Corporation Operation method for LED dimming device
US10206258B2 (en) * 2017-06-16 2019-02-12 Stmicroelectronics S.R.L. Pulse width modulation pattern generator circuit, corresponding device and method

Also Published As

Publication number Publication date
WO2025122048A1 (en) 2025-06-12
SE547837C2 (en) 2025-12-09

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