WO2014046469A2 - Circuit intégré de circuit d'attaque de diode électroluminescente à courant alternatif comprenant un circuit d'attaque de refroidisseur actif adaptatif, dispositif d'éclairage à diodes électroluminescentes comprenant celui-ci et procédé de commande utilisant celui-ci - Google Patents

Circuit intégré de circuit d'attaque de diode électroluminescente à courant alternatif comprenant un circuit d'attaque de refroidisseur actif adaptatif, dispositif d'éclairage à diodes électroluminescentes comprenant celui-ci et procédé de commande utilisant celui-ci Download PDF

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Publication number
WO2014046469A2
WO2014046469A2 PCT/KR2013/008420 KR2013008420W WO2014046469A2 WO 2014046469 A2 WO2014046469 A2 WO 2014046469A2 KR 2013008420 W KR2013008420 W KR 2013008420W WO 2014046469 A2 WO2014046469 A2 WO 2014046469A2
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Prior art keywords
signal
driving
led
active cooler
switch
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PCT/KR2013/008420
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English (en)
Korean (ko)
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WO2014046469A3 (fr
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정혜만
강현구
이강녕
한상욱
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서울반도체 주식회사
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Publication of WO2014046469A2 publication Critical patent/WO2014046469A2/fr
Publication of WO2014046469A3 publication Critical patent/WO2014046469A3/fr

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    • 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
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • 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
    • 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
    • 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
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • 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

Definitions

  • the present invention relates to an AC LED driving IC including an adaptive active cooler driving circuit, an LED lighting device including the same, and a control method using the same. More specifically, various types of control signals are selectively outputted for driving the active cooler.
  • the present invention relates to an AC LED driving IC including an adaptive active cooler driving circuit capable of adaptively controlling the driving of an active cooler, an LED lighting device including the same, and a control method using the same.
  • LEDs are widely used for lighting due to their low power consumption, long service life, excellent durability, and much higher brightness than incandescent and fluorescent lamps, and various types of lighting devices using LEDs have been developed and used.
  • the light output is generally proportional to the magnitude of the input current
  • a high light output can be obtained by increasing the magnitude of the current input to the LED.
  • increasing the amount of current input increases the junction temperature of the LED.
  • Increasing the junction temperature of the LED causes a decrease in luminous efficiency, which indicates the extent to which the input energy changes to visible light. Therefore, improvement of heat dissipation of LED lighting is required, and in particular, in the case of an AC driving LED having a large operating voltage, an improvement in heat dissipation is further required.
  • a passive cooler type for dissipating heat generated from LEDs is commonly used by attaching a heat sink made of a material having excellent thermal conductivity to the bottom of a substrate on which an LED is mounted.
  • a passive cooler type for dissipating heat generated from LEDs is commonly used by attaching a heat sink made of a material having excellent thermal conductivity to the bottom of a substrate on which an LED is mounted.
  • the degree of integration of LEDs is improved and accordingly, the amount of heat generated per unit area is increased, and thus, it is not possible to expect sufficient heat dissipation improvement by the conventional passive cooler alone. Accordingly, the use of an active cooler type using an actuator such as a cooling fan is gradually increasing.
  • SynJet As one of the active coolers as described above, an active cooler called 'SynJet' developed by Nuventix Co., USA is known. Unlike conventional cooling with a cooling fan, SynJet is configured to dissipate heat generated by LEDs by forming turbulence by vibrating diaphragms.
  • 1 is a schematic block diagram of a SynJet driving circuit according to the prior art disclosed in US Patent Publication No. US2007 / 0272393A1. As shown in FIG. 1, the SynJet driving circuit according to the related art is a dedicated driving circuit for driving only the SynJet, and receives a DC voltage from a power source to generate a PWM signal for driving the SynJet, and to the SynJet (actuator). It is configured to run SynJet by outputting.
  • National Semiconductor Corp. has developed an electronic drive board in which an LED driving circuit and a SynJet driving circuit are mounted on one electronic board to simultaneously drive LED and SynJet.
  • 2 is a schematic block diagram of a driving circuit for controlling driving of an LED and an active cooler according to the prior art.
  • a National Semiconductor electronic drive board includes an LM3429 buck-boost LED drive circuit for driving LEDs and an LM2824 voltage regulator circuit for driving SynJet.
  • the LM2824 voltage regulator circuit is configured to drive the SynJet by supplying a constant voltage of DC 5V to the SynJet.
  • the prior art as described above has the following problems.
  • the circuit design becomes complicated because a separate active cooler driving circuit must be added to the LED driving circuit.
  • the separate active cooler driving circuit performs a function of supplying a DC voltage of a constant size, a separate PWM control circuit (as shown in FIG. 1) is required to drive the active cooler of the PWM driving method.
  • a separate PWM control circuit (as shown in FIG. 1) is required to drive the active cooler of the PWM driving method.
  • the design of different active cooler driving circuit is required, which is not efficient.
  • Patent Document 1 US Patent Publication No. US2007 / 0272393A1
  • Non-Patent Document 1 snvu116.pdf available from "http://www.ti.com/tool/mr16-par38led-ref"
  • the present invention is to solve the problems of the prior art as described above.
  • the present invention integrates an active cooler driving circuit for driving an active cooler together in an alternating current LED driving IC, so that an AC led driving IC including an adaptive active cooler driving circuit requiring no design and addition of a separate active cooler driving circuit, It is an object of the present invention to provide an LED lighting device including the same and a control method using the same.
  • the present invention includes an adaptive active cooler driving circuit capable of supplying one of the selected output signal of the DC output signal, square wave output signal, pulse wave output signal to the active cooler as the active cooler driving signal according to the driving method of the active cooler. It is another object of the present invention to provide an AC LED drive IC, an LED lighting device including the same and a control method using the same.
  • the present invention is an AC LED drive IC including an adaptive active cooler driving circuit capable of detecting the state of the LED light, and adaptively control the driving of the active cooler according to the detected state, LED lighting apparatus comprising the same
  • another object is to provide a control method using the same.
  • the signal input unit for receiving the AC input voltage; A rectifier for rectifying the AC input voltage to generate a rectified voltage; A plurality of LED group drivers for receiving the rectified voltage and providing respective LED driving signals to a plurality of LED groups; An LED driving controller configured to control the LED group driving units according to the magnitude of the rectified voltage to determine the size of the LED driving signals provided to the plurality of LED groups, and the timing of providing and blocking the LED driving signals; A plurality of LED drive signal output units which individually provide LED drive signals to the LED group driver; An active cooler controller configured to receive the rectified voltage and selectively generate a DC signal or a square wave signal; And an active cooler driving signal output unit configured to provide the active cooler driving signal to the active cooler.
  • the active cooler driving signal may be generated by a combination of a plurality of pulse waves.
  • the square wave includes a first square wave signal including both a positive pulse wave and a negative pulse wave, and a second square wave signal including only a positive pulse wave and the active wave.
  • the cooler controller may receive the rectified voltage and selectively generate the DC signal, the first square wave signal, or the second square wave signal.
  • the active cooler driving signal may be selectively output in conjunction with the magnitude of the rectified voltage.
  • the AC LED driving IC further includes a temperature sensing sensor for generating a temperature sensing signal, and the active cooler driving signal may be selectively output in conjunction with the temperature sensing signal.
  • the AC LED driving IC further includes a temperature sensing sensor for generating a temperature sensing signal, wherein the active cooler driving signal is output as the square wave signal, and the active cooler driving signal is linked to the temperature sensing signal.
  • the duty ratio of can be changed.
  • the AC LED driving IC further includes a temperature sensing sensor for generating a temperature sensing signal, wherein the active cooler driving signal is output as the direct current signal or the square wave signal and is linked to the temperature sensing signal.
  • the magnitude of the active cooler driving signal may be changed.
  • the AC LED driving IC further includes a temperature sensing signal input unit configured to receive the temperature sensing signal from a temperature sensing sensor generating a temperature sensing signal, and the active cooler driving signal is linked to the temperature sensing signal. Can be output optionally.
  • the AC LED driving IC further includes a temperature sensing signal input unit for receiving the temperature sensing signal from a temperature sensing sensor generating a temperature sensing signal, wherein the active cooler driving signal is output as the square wave signal, The duty ratio of the active cooler driving signal may be changed in association with the temperature sensing signal.
  • the AC LED driving IC further includes a temperature sensing signal input unit configured to receive the temperature sensing signal from a temperature sensing sensor that generates a temperature sensing signal, wherein the active cooler driving signal is the DC signal or the square wave. A signal may be outputted and the magnitude of the active cooler driving signal may be changed in association with the temperature sensing signal.
  • the AC LED driving IC further includes a dimming signal input unit configured to receive a dimming signal from the outside, and the LED driving control unit adjusts the magnitude of the LED driving signal according to the dimming signal,
  • the active cooler driving signal may be selectively output in conjunction with the dimming signal.
  • the AC LED driving IC further includes a dimming signal input unit configured to receive a dimming signal from an external device, and the LED driving controller adjusts the magnitude of the LED driving signal according to the dimming signal, and drives the active cooler.
  • the signal may be output as the square wave signal, and the duty ratio of the active cooler driving signal may be changed in conjunction with the dimming signal.
  • the AC LED driving IC further includes a dimming signal input unit configured to receive a dimming signal from an external device, and the LED driving controller adjusts the magnitude of the LED driving signal according to the dimming signal, and drives the active cooler.
  • the signal may be output as the DC signal or the square wave signal, and the magnitude of the active cooler driving signal may be changed in conjunction with the dimming signal.
  • the active cooler control unit includes: an active cooler control unit for outputting a stabilized signal by stabilizing the rectified voltage and outputting a switch setting signal for selectively generating the DC signal or the square wave signal; And receiving the stabilized signal and the switch setting signal, and processing the stabilized signal according to the switch setting signal to drive one of the DC signal, the first square wave signal, or the second square wave signal to the active cooler. And an output signal switch means for generating as a signal.
  • the stabilized signal may be a constant voltage signal or a constant current signal or a constant voltage-constant current signal.
  • the output signal switching means includes an H bridge circuit having a front end and a rear end connected in parallel between a first output end and a second output end of the active cooler control means, respectively,
  • the front end comprises: a first switch connected to the first output end of the active cooler control means on the front end; A first switch driving circuit for controlling driving of the first switch according to the switch setting signal output from the active cooler control means; A third switch connected to the second output terminal of the active cooler control means on the front end; And a third switch driving circuit for controlling driving of the third switch according to the switch setting signal output from the active cooler control means, wherein a rear end of the H bridge circuit is configured to control the active cooler on the rear end of the H cooler control unit.
  • a second switch connected adjacent to a first output terminal of the second switch; A second switch driving circuit which controls driving of the second switch according to the switch setting signal output from the active cooler control means; A fourth switch connected to the second output end of the active cooler control means on the rear end; And a fourth switch driving circuit for controlling the driving of the fourth switch according to the switch setting signal output from the active cooler control means.
  • the first switch drive circuit first generates a pulse wave of a fixed phase having a duty ratio of 50%.
  • the second switch driving circuit is controlled to output as a switch control signal, and the second switch driving circuit has a duty ratio of 50%, and the second switch outputs a pulse wave of a fixed phase having a predetermined delay time so as not to overlap with the first switch control signal.
  • the third switch driving circuit is controlled to output as a control signal, and the third switch driving circuit has a duty ratio of 50%, and is shifted on a time axis with respect to the first switch control signal to generate a third pulse wave that partially overlaps the first switch control signal.
  • the fourth switch driving circuit has a duty ratio of 50% and is controlled to output as a switch control signal. And it can be shifted on the time axis to be controlled such that it outputs the second switch control signal and a pulse wave portion overlapping a fourth switch control signal.
  • the first switch drive circuit when the output signal switch means is set to generate the second square wave signal as the active cooler drive signal, the first switch drive circuit outputs a pulse wave having a preset duty ratio as the first switch control signal. And the second switch driving circuit and the third switch driving circuit are turned off, and the fourth switch driving circuit can be controlled to output a DC signal as a fourth switch control signal.
  • the first switch drive circuit is controlled to output the direct current signal as a first switch control signal
  • the second switch The driving circuit and the third switch driving circuit may be turned off, and the fourth switch driving circuit may be controlled to output a DC signal as a fourth switch control signal.
  • a control method using an AC LED driving IC including an adaptive active cooler driving circuit comprising the steps of: (a) generating a rectified voltage by rectifying the AC input voltage; (b) determining the size of the LED driving signal provided to the plurality of LED groups, and the providing time and blocking time of the LED driving signal according to the magnitude of the rectified voltage, and individually LED each of the plurality of LED groups based on the determined contents; Providing a driving signal; And (c) receiving the rectified voltage and selectively generating a DC signal or a square wave signal, and providing the generated DC signal or the square wave signal to an active cooler as an active cooler driving signal.
  • a control method using an LED driving IC is provided.
  • the active cooler driving signal may be generated by a combination of a plurality of pulse waves.
  • the square wave includes a first square wave signal including both a positive pulse wave and a negative pulse wave, and a second square wave signal including only a positive pulse wave.
  • the rectified voltage may be input to selectively generate the DC signal, the first square wave signal, or the second square wave signal.
  • the step (c) may selectively output the active cooler driving signal in conjunction with the magnitude of the rectified voltage.
  • the AC LED driving IC further includes a temperature sensing sensor for generating a temperature sensing signal, and the step (c) may selectively output the active cooler driving signal in association with the temperature sensing signal.
  • the AC LED driving IC further includes a temperature sensing sensor for generating a temperature sensing signal, wherein the active cooler driving signal is output as the square wave signal in step (c), and step (c)
  • the duty ratio of the active cooler driving signal may be changed in association with the temperature sensing signal.
  • the AC LED driving IC further includes a temperature sensing sensor for generating a temperature sensing signal, and in the step (c), the active cooler driving signal is output as the DC signal or the square wave signal, and the ( In step c), the size of the active cooler driving signal may be changed in association with the temperature sensing signal.
  • the AC LED driving IC further includes a temperature sensing signal input unit for receiving the temperature sensing signal from a temperature sensing sensor that generates a temperature sensing signal, wherein step (c) is performed in conjunction with the temperature sensing signal.
  • the active cooler driving signal may be selectively output.
  • the AC LED driving IC further includes a temperature sensing signal input unit configured to receive the temperature sensing signal from a temperature sensing sensor that generates a temperature sensing signal, and in step (c), the active cooler driving signal is It is output as a square wave signal, and the step (c) may change the duty ratio of the active cooler driving signal in association with the temperature sensing signal.
  • the AC LED driving IC further includes a temperature sensing signal input unit configured to receive the temperature sensing signal from a temperature sensing sensor that generates a temperature sensing signal, and in step (c), the active cooler driving signal is The signal may be output as a DC signal or the square wave signal, and the step (c) may change the size of the active cooler driving signal in association with the temperature sensing signal.
  • the AC LED driving IC further includes a dimming signal input unit configured to receive a dimming signal from the outside, and the step (b) adjusts the magnitude of the LED driving signal according to the dimming signal, and (c) ) May selectively output the active cooler driving signal in association with the dimming signal.
  • the AC LED driving IC further includes a dimming signal input unit configured to receive a dimming signal from the outside, and the step (b) adjusts the magnitude of the LED driving signal according to the dimming signal, and (c) In step), the active cooler driving signal may be output as the square wave signal, and in step (c), the duty ratio of the active cooler driving signal may be changed in conjunction with the dimming signal.
  • the AC LED driving IC further includes a dimming signal input unit configured to receive a dimming signal from the outside, and the step (b) adjusts the magnitude of the LED driving signal according to the dimming signal, and (c) In step), the active cooler driving signal may be output as the square wave signal, and in step (c), the size of the active cooler driving signal may be changed in conjunction with the dimming signal.
  • the LED light emitting module comprising a first LED group to the nth LED group (n is an integer of 2 or more); Receives an AC input voltage, generates a rectified voltage, supplies the rectified voltage to the LED light emitting module, controls sequential driving of the first to nth LED groups of the LED light emitting module according to the magnitude of the rectified voltage, and rectifies the rectified voltage.
  • An AC LED driving IC which generates an active cooler driving signal based on the voltage and outputs the active cooler driving signal to the active cooler; And an active cooler driven according to the active cooler drive signal output from the AC LED driver IC.
  • an active cooler driving circuit for driving an active cooler in an AC LED driving IC, it is possible to expect an effect that a separate active cooler driving circuit is not required.
  • active coolers of various methods without a separate circuit design or circuit modification or circuit modification It can expect the effect that can be controlled and can improve the versatility.
  • FIG. 1 is a schematic block diagram of an active cooler driving circuit according to the prior art.
  • FIG. 2 is a schematic structural block diagram of a driving circuit for controlling the driving of an LED and an active cooler according to the prior art.
  • FIG. 3 is a schematic block diagram of an LED lighting device to which an AC LED driving IC including an adaptive active cooler driving circuit according to an exemplary embodiment of the present invention is applied.
  • FIG. 4 is a block diagram illustrating an LED lighting apparatus to which an AC LED driving IC including an adaptive active cooler driving circuit according to an exemplary embodiment of the present invention is applied.
  • FIG. 5 is a block diagram illustrating an AC LED driving IC including an adaptive active cooler driving circuit according to an exemplary embodiment of the present invention.
  • FIG. 6 is a detailed block diagram of an output signal switch means in the active cooler control unit disclosed in FIG. 5 according to an exemplary embodiment of the present invention.
  • Figure 7 is an exploded perspective view of the LED lighting apparatus according to an embodiment of the present invention.
  • 8A to 8C are output waveform diagrams of an active cooler driving signal according to a switch control signal according to an exemplary embodiment of the present invention.
  • 9A to 9C are output waveform diagrams of an active cooler driving signal adaptively controlled according to an exemplary embodiment of the present invention.
  • FIG. 10 is a flow chart showing a control process using the AC LED drive IC according to an embodiment of the present invention.
  • the term 'first square wave signal' means a signal including both a pulse wave having a positive value and a pulse wave having a negative value
  • the term 'second square wave signal' means a positive value. Means a signal containing only a pulse wave having a.
  • the term 'AC LED driver IC' refers to an integrated circuit for driving and controlling the LED by receiving an AC voltage, and has been described with reference to an embodiment of controlling the driving of the LED using the rectified voltage in the present specification. It is not intended to be exhaustive and should be interpreted broadly and broadly.
  • the term 'LED group' means that a plurality of LEDs (or a plurality of light emitting cells) are connected in series / parallel / parallel and parallel, so that operation is controlled as one unit according to the control of the AC LED driving IC (that is, A set of LEDs that are lit together / lit off.
  • first forward voltage level (1VF)' means a threshold voltage level capable of driving one LED group
  • second forward voltage level (2VF)' may drive two LED groups
  • Term "third forward voltage level (3VF)” means a threshold voltage level capable of driving three groups of LEDs
  • fourth forward voltage level (4VF) means four It means the threshold voltage level that can drive LED group. That is, the 'n th forward voltage level nVF' means a threshold voltage level capable of driving n groups of LEDs.
  • V1, V2, V3, ..., t1, t2, ..., T1, T2, T3, etc. used to indicate any particular voltage, a specific time point, a specific temperature, etc. within the present specification. are not used to represent absolute values, but to distinguish them from one another.
  • FIG. 3 is a schematic block diagram of an LED lighting apparatus to which an AC LED driving IC including an adaptive active cooler driving circuit according to an exemplary embodiment of the present invention is applied.
  • an LED lighting apparatus to which an AC LED driving IC including an adaptive active cooler driving circuit according to an exemplary embodiment of the present invention is applied will be described.
  • an LED lighting device to which an AC LED driving IC (hereinafter referred to as an “AC LED driving IC”) 100 including an adaptive active cooler driving circuit according to the present invention is applied to an AC LED driving IC ( 100), a plurality of LED groups 200, and an active cooler 300.
  • the AC LED driving IC 100 receives an AC voltage VAC from an AC voltage source, rectifies the input AC voltage to generate a rectified voltage Vrec.
  • the AC LED driver IC 100 is configured to perform a function of controlling driving of the plurality of LED groups 200 and the active cooler 300 connected by using the generated rectified voltage Vrec.
  • the AC LED driving IC 100 is a signal input unit 110, rectifier 120, LED driving control unit 130, a plurality of LED group driving unit 140, The LED driving signal output units 150, the active cooler control unit 160, and the active cooler driving signal output unit 170 may be included.
  • the signal input unit 110 receives an AC voltage VAC from an AC voltage source, outputs the AC voltage to the rectifier 120, and the rectifier 120 rectifies the AC voltage to generate a rectified voltage Vrec.
  • VAC AC voltage
  • Vrec rectified voltage
  • the LED driving control unit 130, the plurality of LED group driving units 140, and the plurality of LED driving signal output units 150 in the AC LED driving IC 100 according to the present invention may use a rectified voltage Vrec. It is configured to perform a function of controlling the driving of the plurality of connected LED groups 200. More specifically, the plurality of LED group drivers 140 are configured to receive the aforementioned rectified voltage Vrec to perform a function of providing an individual LED driving signal to each of the plurality of LED groups 200. In addition, the LED driving controller 130 controls the LED group driving units 140 according to the size of the rectified voltage (Vrec) to the size of the LED driving signal and the LED driving signal provided to the plurality of LED groups 200.
  • Vrec rectified voltage
  • the plurality of LED driving signal output units 150 are configured to individually provide LED driving signals provided by the LED group driving units 140 to the LED groups 200, respectively. More preferably, the number of the plurality of LED group drivers 140 and the plurality of LED drive signal output units 150 according to the present invention corresponds to the number of LED groups of the plurality of LED groups 200 to be controlled. Is determined. In the exemplary embodiment shown in FIG. 3, since the plurality of LED groups 200 includes four LED groups 201, 202, 203, and 204, correspondingly, the plurality of LED group drivers ( 140 includes four LED group driving units 141, 142, 143, and 144. Likewise, the plurality of LED driving signal output units 150 may also include four LED driving signal output units 151, 152, 153, and 154. It is configured to include.
  • the LED driving controller 130 may provide the magnitude and size of the LED driving signal provided to the first LED group 201 to the fourth LED group 204 and the timing of providing and blocking the LED driving signal according to the magnitude of the rectified voltage Vrec. Determine the time point, and control the first LED group driver 141 to provide or block the LED drive signal to the first LED group 201 through the first LED drive signal output unit 151 to the first LED group 201. ) To control the driving. Also, in a similar manner, the LED driving control unit 130 controls the second LED group driving unit 142 to the fourth LED group driving unit 144 to control the second LED group 202 to the fourth LED group 204. It will control the driving.
  • an LED driving signal for the first LED group 201 output through the first LED driving signal output unit 151 is shown at the upper end of the first LED driving signal output unit 151.
  • the LED driving signal provided to the second LED group 202 is shown at the top of the second LED driving signal output unit 152, and at the top of the third LED driving signal output unit 153.
  • the LED driving signal provided to the third LED group 203 is shown, and the LED driving signal provided to the fourth LED group 204 is shown at the top of the fourth LED driving signal output unit 154.
  • the LED driving signals shown in FIG. 3 are for illustrative purposes, and various types of LED driving signals may be used, and LED driving signals having various sizes may be used. As described above, specific configurations and functions of the LED driving controller 130, the plurality of LED group drivers 140, and the plurality of LED driving signal output units 150 will be described later with reference to FIGS. 4 and 5. do.
  • the active cooler driving signal output unit 170 is configured to perform a function of providing an active cooler driving signal output from the active cooler controller 160 to the connected active cooler 300. Referring to FIG.
  • a DC signal, a second square wave signal, and a first square wave signal which may be selectively output as an active cooler driving signal, are sequentially displayed from the top to the bottom of the active cooler driving signal output unit 170.
  • the active cooler control unit 160 adapts the output of the active cooler 300 according to the change in the magnitude of the rectified voltage (Vrec), the internal / external temperature change, and / or the dimming level change May be further configured to control.
  • Vrec rectified voltage
  • the internal / external temperature change the internal / external temperature change
  • dimming level change May be further configured to control.
  • specific configurations and functions of the active cooler control unit 160 and the active cooler driving signal output unit 170 will be described later with reference to FIGS. 4 to 6, 8A to 8C, and 9A to 9C. Do it.
  • the plurality of LED groups 200 may include the first LED group 201 to the fourth LED group 204, the driving is controlled by the LED drive control unit 130.
  • the active cooler 300 may adopt one of various known active coolers as needed, and may be driven and controlled under the control of the active cooler controller 160. Detailed configurations and functions of the plurality of LED groups 200 and the active cooler 300 will be described later.
  • FIG. 4 is a block diagram illustrating an LED lighting apparatus to which an AC LED driving IC including an adaptive active cooler driving circuit according to an exemplary embodiment of the present invention is applied.
  • FIG. 4 a configuration and a function of an LED lighting apparatus to which an AC LED driving IC including an adaptive active cooler driving circuit according to an exemplary embodiment of the present invention is applied will be described.
  • the LED lighting apparatus to which the AC LED driving IC 100 according to the present invention is applied may include an AC LED driving IC 100, a plurality of LED groups 200, and an active cooler 300. Can be.
  • the AC LED driving IC 100 receives an AC voltage from an AC voltage source, rectifies the input AC voltage to generate a rectified voltage, and connects a plurality of LED groups according to the magnitude of the rectified voltage ( And to perform a function of controlling the driving of 200.
  • the AC LED driver IC 100 according to the present invention is configured to further perform a function of controlling the driving of the connected active cooler 300 using the generated rectified voltage.
  • the AC LED driving IC 100 is a signal input unit 110, rectifier 120, LED drive control unit as shown in Figs. 130, a plurality of LED group drivers 140, a plurality of LED driving signal output units 150, an active cooler control unit 160, and an active cooler driving signal output unit 170.
  • the rectifier 120 is configured to rectify the AC voltage VAC input through the signal input unit 110 to generate and output a rectified voltage Vrec.
  • the rectifier 120 one of various known rectifier circuits such as a full-wave rectifier circuit and a half-wave rectifier circuit may be used.
  • the rectified voltage Vrec output from the rectifier 120 is input to the plurality of LED groups 200, the LED driver 130, and the active cooler driver 150.
  • the LED driving control unit 130 determines the magnitude of the input rectified voltage, the magnitude of the LED driving signal to be provided to each of the plurality of LED groups 200 according to the determined rectified voltage, the LED driving signal Determine when to provide and when to block.
  • the LED driving controller 130 provides an LED driving signal having a size determined as one or a plurality of LED group (s) 201 to 204 at the time of providing the determined LED driving signal, and the determined LED driving signal.
  • the driving of the plurality of LED groups 200 is controlled by stopping the provision of the LED driving signal to the one or the plurality of LED group (s) 201-204 at the time of blocking.
  • the active cooler controller 160 receives a rectified voltage output from the rectifier 120, generates an active cooler driving signal required for driving the active cooler 300, and outputs the generated active cooler signal to the active cooler 300. Configured to perform. More preferably, the active cooler control unit 160 according to the present invention may generate a plurality of types of active cooler driving signals to provide an appropriate type of active cooler driving signal according to the driving method of the active cooler 300. It is configured to be. That is, the active cooler control unit 160 is configured to generate an active cooler driving signal in the form of a DC signal and a square wave signal, and selectively selects one of a DC signal or a square wave signal according to the driving method of the connected active cooler 300. And generate as an active cooler driving signal to provide to the active cooler 300. Detailed configuration and function of the active cooler control unit 160 according to the present invention will be described later with reference to FIG.
  • the plurality of LED groups 200 are connected to the AC LED driver IC 100 and driven under the control of the AC LED driver IC 100.
  • 3 and 4 disclose an LED lighting device including a first LED group 201, a second LED group 202, a third LED group 203, and a fourth LED group 204, but is required. It will be apparent to those skilled in the art that the number of LED groups included in the LED lighting device may be variously changed.
  • the active cooler 300 is connected to the AC LED driver IC 100 and driven under the control of the AC LED driver IC 100.
  • the active cooler 300 included in the LED lighting apparatus according to the present invention Nitatiix Corporation 'SynJet' as described above may be adopted.
  • the active cooler 300 used in the present invention is not limited thereto, and an active cooler of a cooling fan type using an driving motor, an active cooler of an air pump type (for example, Murata's 'micro blower', etc.)
  • an active cooler of an air pump type for example, Murata's 'micro blower', etc.
  • One of various known active coolers that can be driven and controlled by the AC LED driving IC 100 according to the present invention can be used as the active cooler 300 according to the present invention.
  • the AC LED driving IC 100 is configured to support various driving methods (for example, a DC signal driving method, a PWM signal driving method, and the like), any of the active coolers regardless of the driving method. It should be noted that an active cooler having a drive scheme can be driven and controlled by the AC LED drive IC 100 according to the present invention.
  • the LED lighting apparatus includes a fuse unit 310 and a varistor for protecting the AC LED driver IC 100 from overvoltage between an AC power source and an AC LED driver IC 100.
  • MOV varistor
  • the fuse unit 310 and the varistor (MOV) 320 adopt a known technique, a detailed description thereof will be omitted.
  • the LED lighting apparatus may further include a temperature sensor 350.
  • the temperature sensor 350 is provided at an arbitrary position in the LED lighting device (preferably near the plurality of LED groups) to detect the current temperature and generate a temperature sensing signal corresponding to the detected temperature to drive the AC LED. And output to the IC 100.
  • the AC LED driving IC 100 may adaptively use the active cooler 300 by using the temperature sensing signal input from the temperature sensing sensor 350. May be further configured to control. A more detailed description thereof will be described later with reference to FIG. 5.
  • a temperature sensing sensor (not shown) may be built in the AC LED driving IC 100.
  • FIG. 5 is a block diagram illustrating an AC LED driver IC including an adaptive active cooler driver circuit according to an exemplary embodiment of the present invention.
  • the configuration and function of the driving IC according to the present invention will be described in detail.
  • the AC LED driving IC 100 includes a signal input unit 110, a rectifying unit 120, an LED driving control unit 130, a plurality of LED group driving units 140, and a plurality of LED driving units 140.
  • the LED driving signal output units 150, the active cooler control unit 160, and the active cooler driving signal output unit 170 may be included. Since the descriptions of the signal input unit 110 and the rectifier 120 are the same as those described with reference to FIGS. 3 and 4, the LED groups 200 of the AC LED driving IC 100 will be described below with reference to FIG. 5.
  • the driving and control function of the active cooler 300 will be described with a focus on the driving and control function.
  • the AC LED driver IC 100 includes a plurality of LED group drivers 141, 142, 143, and 144 for driving and controlling the LED groups 201, 202, 203, and 204.
  • the LED driving control unit 130 may include a plurality of LED driving signal output units 151, 152, 153, and 154.
  • the LED driving controller 130 determines the magnitude of the rectified voltage input from the rectifying unit 120, and the magnitude of the LED driving signal to be provided to each of the LED groups 201 to 204 according to the magnitude of the rectifying voltage, the LED driving. Determine when to provide and when to block the signal.
  • the LED driving controller 130 controls the LED group driving units 141 to 144 at the time of providing the determined LED driving signal for each LED group to provide the LED driving signal to the corresponding LED group (s) to turn on the corresponding LED group. And controlling the LED group driving units 141 to 144 at the time of blocking the determined LED driving signal for each LED group to block the provision of the LED driving signal to the corresponding LED group (s).
  • the plurality of LED group drivers 141 to 144 correspond to the plurality of LED groups 201 to 204 in a one-to-one manner, and the plurality of LED groups 201 to 204 are controlled by the LED driving controller 130. It provides a LED driving signal to each or performs a function to block the provision of the LED driving signal.
  • the first LED group driving unit 141 is connected to the first LED group 201 through the first LED driving signal output unit 151 and the LED driving control unit.
  • the LED driving signal is provided to or blocked by the first LED group 201 under the control of 130.
  • the second LED group driver 142 is connected to the second LED group 202 through the second LED drive signal output unit 152, and the third LED group driver 143 outputs the third LED drive signal. It is connected to the third LED group 203 through the unit 153, the fourth LED group driver 144 is connected to the fourth LED group 204 through the fourth LED drive signal output unit 154, corresponding It is configured to perform the function of providing and blocking the LED drive signal to the LED group.
  • the LED group driver 140 as described above may be implemented using an electronic switching element such as a bipolar junction transistor (BJT), a field effect transistor (FET), and the like, and is not limited thereto.
  • the LED driving controller 130 may turn on and turn off each of the LED group drivers 141 to 144 using a pulse-shaped control signal. By controlling the control, the LED driving signal to the specific LED group is controlled and controlled.
  • the plurality of LED driving signal output units 151 to 154 are located between the plurality of LED group driving units 141 to 144 and the plurality of LED groups 201 to 204, respectively, to provide LED driving signals of a specific LED group driving unit.
  • the first LED driving signal output unit 151 providing a driving signal to the first LED group 201 is implemented as the 16th terminal D1 of the AC LED driving IC 100 and the second LED group.
  • the second LED driving signal output unit 152 that provides a driving signal to the 202 is implemented as the 15th terminal D2 of the AC LED driving IC 100, and provides the driving signal to the third LED group 203.
  • the fourth LED drive signal output unit 153 is implemented as the 14th terminal D3 of the AC LED driver IC 100, and the fourth LED drive signal output unit provides a drive signal to the fourth LED group 204.
  • An embodiment in which 154 is implemented as the 13th terminal D4 of the AC LED driving IC 100 is shown.
  • FIG. 9A is a diagram illustrating a rectified voltage waveform diagram and an active cooler driving signal waveform diagram of an exemplary embodiment in which an active cooler driving signal is selectively output according to the magnitude of the rectified voltage.
  • a plurality of LED group driving units (141 to 144), LED driving control unit according to the present invention configured as described above
  • the function of the 130 and the plurality of LED driving signal output units 151 to 154 will be described in detail.
  • the LED driving controller 130 determines the magnitude of the rectified voltage Vrec, and if the magnitude of the input rectified voltage Vrec is a size capable of driving one LED group (that is, the rectified voltage).
  • the voltage level of the voltage Vrec belongs to the first forward voltage level (1VF ⁇ VP ⁇ 2VF)
  • one LED group of the four LED groups 201 to 204 for example, the first LED group 201).
  • the LED driving controller 130 may include two LED groups (eg, the first LED group 201 when the voltage level of the rectified voltage Vrec belongs to the second forward voltage level (2VF ⁇ VP ⁇ 3VF)). ), The LED driving signal is provided only to the second LED group 202, and when the voltage level of the rectified voltage Vrec belongs to the third forward voltage level (3VF ⁇ VP ⁇ 4VF), three LED groups ((e.g., For example, the LED driving signal is provided only to the first LED group 201, the second LED group 202, and the third LED group 203, and the voltage level of the rectified voltage Vrec belongs to the fourth forward voltage level. In this case (4VF ⁇ VP ⁇ Vrec max), the plurality of LED group drivers 141 to 144 are controlled to provide the LED driving signal to all of the four LED groups 201 to 204.
  • the plurality of LED group drivers 141 to 144 are controlled to provide the LED driving signal to all of the four LED groups 201 to 204.
  • Table 1 below is sequentially turned on from the first LED group 201 to the fourth LED group 204 according to the increase in the voltage level of the rectified voltage (Vrec), and according to the decrease in the voltage level of the rectified voltage (Vrec)
  • the LED group driving units 141 to 1 period of the rectified voltage Vrec half cycle of the AC voltage VAC. This table shows the operation status of 144).
  • the LED group drivers 141-144 may each be configured to operate as a constant current source. As shown in Table 1, first, when the rectified voltage Vrec starts to be applied, current begins to flow in the first LED group 201. As the magnitude of the rectified voltage Vrec increases gradually, at a time t10 at which the magnitude of the rectified voltage Vrec becomes the first forward voltage level, the LED driving controller 130 is provided to the first LED group driver 141. Start to apply one drive control signal (e.g., 1V). In this case, since the driving control signal is not applied to the other LED group drivers 141 to 144, the other LED group drivers 141 to 144 maintain the turn-off state.
  • one drive control signal e.g. 1V
  • the LED driving controller 130 performs a first LED group driver ( 141 is turned off and a second driving control signal (for example, 2V) is started to the second LED group driver 142.
  • a predetermined constant current for example, 2 mA
  • the LED driving control unit 130 performs the second LED group.
  • the driving unit 142 is turned off and the third LED group driving unit 143 starts to apply a third driving control signal (eg, 3V).
  • a predetermined constant current for example, 3 mA
  • the LED driving control unit 130 performs a third LED group.
  • the driving unit 143 is turned off and the fourth LED group driving unit 144 starts to apply a fourth driving control signal (for example, 4V).
  • a predetermined constant current for example, 4 mA
  • the LED driving controller 130 performs a fourth operation.
  • the LED group driver 144 is turned off and a third driving control signal is applied to the third LED group driver 143.
  • a predetermined constant current for example, 3 mA
  • the LED driving control unit 130 turns off the third LED group driving unit 143 and the second LED.
  • the group driving unit 142 starts to apply the second driving control signal.
  • a predetermined constant current for example, 2 mA
  • the LED driving controller 130 turns off the second LED group driving unit 142 and the first LED.
  • the first driving control signal is applied to the group driver 141.
  • a predetermined constant current for example, 1 mA
  • the LED driving controller 130 rectifies by limiting the amount of current flowing through each LED group when the rectified voltage Vrec is applied to emit the plurality of LED groups 201 to 204 for each section.
  • the driving of the plurality of LED groups 201 to 204 may be controlled regardless of a change in the voltage Vrec.
  • the present invention has been described with reference to an exemplary embodiment in which the constant current values flowing through the LED groups 201 to 204 vary according to the voltage level of the rectified voltage Vrec.
  • the voltage of the rectified voltage Vrec is different.
  • the constant current value flowing through the LED groups 201 to 204 may be configured to always be constant.
  • the LED group drivers 141 ⁇ 144 may be configured to simply perform a switching operation.
  • the LED driving controller 130 controls the turn-on and turn-off of the LED group drivers 141 to 144 according to the magnitude of the rectified voltage Vrec in a similar manner to the above-described embodiment. Thereby forming one of the current paths P1 through P4, thereby controlling the driving of the LED groups 201-204.
  • a constant current controller (not shown) between the current path and the ground, it can be configured to maintain the current flowing in the LED groups 201 ⁇ 204 to a preset value.
  • the LED driver 130 may be configured to further support the dimming function.
  • the dimming signal from the outside generated by the user's operation or the like is driven by the dimming signal input unit DIM (terminal 11 DIM of the AC LED driving IC 100). It is input to the controller 130.
  • the LED driving controller 130 is configured to perform dimming control by adjusting a value of a current flowing through the LED groups 201 to 204 according to the input dimming signal. Such dimming control may be performed using continuous analog dimming control or stepwise dimming control.
  • a dimming signal having a value between 0V and 10V is input through the 11th terminal DIM, and the LED driving controller 130 controls the LED group in proportion to the input dimming signal. It can be configured to adjust the value of the current flowing through the fields (201 ⁇ 204).
  • the dimming control of the stepwise method a plurality of dimming levels (for example, dimming level 1, dimming level 2, dimming level 3) and current values according to the dimming level are set in advance, and the dimming signal is It has a value for indicating a specific dimming level.
  • the LED driving controller 130 determines a specific dimming level corresponding to the input dimming signal, and controls the current so as to flow in the LED groups 201 to 204 according to the determined dimming level. It may be configured to perform dimming control.
  • the LED driver 130 according to the present invention is configured to support the dimming function, the dimming signal input through the dimming signal input unit (DIM) for adaptive control of the active cooler 300 ( Alternatively, the specific dimming level corresponding to the dimming signal determined by the LED driving controller 130 may be provided together with the active cooler driver 150.
  • DIM dimming signal input unit
  • Active cooler 300 drive and control function of AC LED driver IC 100
  • the AC LED driving IC 100 may include an active cooler control unit 161 and an output signal for driving and controlling the active cooler 300.
  • An active cooler control unit 160 including a switch means 162 and an active cooler driving signal output unit 170 may be included.
  • the active cooler controller 160 is configured to receive a rectified voltage from the rectifier 120 and to generate an active cooler driving signal for driving and controlling the active cooler 300.
  • the active cooler control unit 160 according to the present invention is configured to selectively generate a control signal according to one of a plurality of control signals.
  • the active cooler driver 150 according to the present invention is a DC signal for driving and controlling the DC-type active cooler 300, a square wave signal for driving and controlling the PWM-type active cooler 300 It is configured to generate.
  • the above-described square wave signal is a first square wave for driving both directions (forward and reverse) of the actuator provided in the active cooler 300 and the forward direction (or reverse direction) of the actuator provided in the active cooler 300.
  • the active cooler control unit 160 may be configured to provide the active cooler 300 with one of a direct current signal, a first square wave signal, or a second square wave signal as an active cooler driving signal.
  • selecting one of the DC signal, the first square wave signal, and the second square wave signal as the active cooler driving signal may be configured by using a jumper (not shown) outside the AC LED driving IC 100.
  • a direct current signal is selected as the active cooler drive signal when the jumper is in the first position
  • a first square wave signal is selected as the active cooler drive signal when the jumper is in the second position
  • the jumper is in the third position.
  • the second square wave signal may be configured to be selected as the active cooler driving signal.
  • the active cooler controller 160 according to the present invention automatically detects a driving method of the connected active cooler 300 and sets a control signal according to the detected method as the active cooler driving signal. It may be configured to.
  • the active cooler control unit 160 may include an active cooler control unit 161 and an output signal switch unit 162.
  • the active cooler control unit 160 according to the present invention is largely configured to perform three functions (constant current-constant voltage stabilization function, selective generation function of an active cooler driving signal, and adaptive control function of an active cooler).
  • each function will be described in detail with reference to FIGS. 6, 8A to 8C, and 9A to 9C.
  • the active cooler control means 161 is configured to stabilize the input rectified voltage (Vrec) to perform a stabilizing function of generating a predetermined constant voltage constant current signal.
  • Vrec input rectified voltage
  • one of various known constant current-constant voltage stabilization circuits may be used.
  • the setting of the constant voltage value may be made through terminal 5 Vset of the AC LED driving IC 100 illustrated in FIG. 4, and the setting of the constant current value may be performed using the AC LED driving IC 100 illustrated in FIG. 4. It can be made through the sixth terminal (Iset) of the). Therefore, according to the specifications of the active cooler 300 to be connected, the optimized voltage and current may be supplied to the active cooler 300.
  • the stabilized constant current-constant voltage signals are output to the output signal switch means 162.
  • the active cooler control means 161 performs only one of the stabilization function of the constant current stabilization function, the constant voltage stabilization function, or the constant current-constant voltage stabilization function, or stabilization of any one of these stabilization functions. It may be configured to perform a function selectively.
  • the active cooler control means 161 is also configured to perform a function of controlling the output signal switch means 162.
  • the output signal switching means 162 is a direct current signal or a first square wave signal or a second square wave signal based on the constant current-constant voltage signals input from the active cooler control means 161 under the control of the active cooler control means 161. Selectively generate and provide the generated signal to the active cooler 300 through the active cooler driving signal output unit 170.
  • FIG. 6 is a detailed block diagram of an output signal switch means in the active cooler control unit disclosed in FIG. 5 according to an exemplary embodiment of the present invention
  • FIGS. 8A to 8C illustrate a switch control signal according to an exemplary embodiment of the present invention.
  • Output waveform diagram of the active cooler drive signal will be described in detail with reference to FIGS. 6 and 8A to 8C.
  • the output signal switch means 162 is the first switch (SW1) 604, the second switch (SW2) 614, the third switch (SW3) 624 ), A fourth switch (SW4) 634, a first switch driving circuit (Gate Driver-A) 602, a second switch driving circuit (Gate Driver-B) 612, for controlling the driving of each switch,
  • the H-bridge may include a third switch driver circuit (Gate Driver-C) 622 and a fourth switch driver circuit (Gate Driver-D) 632.
  • the output signal switch means 162 according to the present invention is a direct current signal, or a first square wave, through the turn-on and turn-off of four switches 604, 614, 624, 634 disposed on the H-bridge.
  • the input terminals 640 and 650 of the output signal switching means 162 are connected to the active cooler control means 161 to receive a constant voltage-constant current signal output from the active cooler control means 161.
  • the first output and the second output of the output signal switch means 162 are connected to the first output terminal Vout A and the second output terminal Vout B of the active cooler drive signal output unit 170, respectively, and output signal.
  • the active cooler driving signal finally output from the switch means 162 is provided to the active cooler 300.
  • each of the first to fourth switches 604, 614, 624, and 634 as described above may be embodied as an N-channel or P-channel semiconductor switch device.
  • a known BJT or FET may be used. It can be implemented using a semiconductor switch device.
  • the switches 604, 614, 624, and 634 are turned on or off according to a control signal input to each gate terminal.
  • the first to fourth switch driving circuits 602, 612, 622, and 632 correspond one-to-one to the first to fourth switches 604, 614, 624, and 634, and the active cooler control means 161.
  • a control signal for controlling each of the switches 604, 614, 624, and 634 is output to the gate terminal of each of the switches Gate A, Gate B, Gate C, and Gate D according to the control of.
  • Each control signal output from the switch driving circuits 602, 612, 622, 632 may have a logic high (eg, 1) value and / or have a logic low (eg, 0) value. have.
  • each control signal output from the switch driving circuits 602, 612, 622, and 632 may be output in the form of a pulse wave having both a logic high value and a logic low value, or a logic high value or a logic low value. It may be output in the form of a DC signal having only one value. Accordingly, an oscillation circuit (not shown) for supplying a pulse signal to the first to fourth switch driving circuits 602, 612, 622, and 632 may be included in or outside the output signal switch means 162.
  • FIG. 8A shows waveforms of the switch control signals and waveforms of the output signal for generating the first square wave signal when the first square wave signal is selected as the active cooler driving signal.
  • the first switch control signal Gate A output from the first switch driving circuit 602 and the second switch control signal output from the second switch driving circuit 612 from the top of the figure.
  • Gate B the third switch control signal Gate C output from the third switch driving circuit 622
  • the fourth switch control signal Gate D output from the fourth switch driving circuit 632 are sequentially shown.
  • the first square wave signal output as the active cooler drive signal is shown as Vout AB at the bottom of the figure.
  • the first to fourth switch control signals Gate D are all pulse signals having a duty ratio of 50%.
  • the first switch driving circuit 602 and the second switch output the first square wave signal.
  • the driving circuit 612 is controlled to output the first switch control signal Gate A and the second switch control signal Gate B, respectively, in a fixed phase.
  • the third switch driving circuit 622 and the fourth switch driving circuit 632 may each have a third switch control signal Gate C and a fourth switch control signal Gate D shifted in the direction of the arrow shown in FIG. 8A. It is controlled to output.
  • first switch control signal Gate A and the second switch control signal Gate B are controlled to have a predetermined delay time so as not to overlap each other, and likewise, the third switch control signal Gate C
  • the fourth switch control signal Gate D is also controlled to have a preset delay time so as not to overlap each other. Therefore, as shown in FIG. 8A, the first switch control signal Gate A and the fourth switch control signal Gate D have a logic high value in common, and the second switch control signal Gate B and the third switch.
  • the switch control signal Gate C has a logic low value in common
  • the first switch 604 and the fourth switch 634 remain turned on
  • the second switch ( 614 and the third switch 624 remain turned off, and a positive pulse having a positive value is output through the output of the output signal switch means 162.
  • the second switch control signal Gate B and the third switch control signal Gate C have a common logic high value
  • the first switch control signal Gate A and the fourth switch control signal Gate D are common.
  • the output signal switch means 162 can generate a first square wave signal.
  • the time interval t1 to t2 and time are changed by changing the degree of shift of the third switch control signal Gate C and the fourth switch control signal Gate D.
  • the duty ratio can be controlled by changing the range of the periods t3 to t4.
  • FIG. 8B shows waveforms of the switch control signals and waveforms of the output signal for generating the second square wave signal when the second square wave signal is selected as the active cooler drive signal.
  • the first switch control signal Gate A, the second switch control signal Gate B, the third switch control signal Gate C, and the fourth switch control signal Gate D from the top of the drawing. ) are shown in order.
  • a second square wave signal output as an active cooler drive signal is shown as Vout AB at the bottom of the figure.
  • the first switch driving circuit 602 removes a pulse signal having a predetermined duty ratio (D / Ts).
  • the fourth switch driving circuit 632 is controlled to always output a control signal having a logic high value.
  • the second switch driving circuit 612 and the third switch driving circuit 622 are controlled to remain off (or always output a logic low value).
  • the first switch control signal Gate A and the fourth switch control signal Gate D have a logic high value in common, and the second switch control signal Gate B and the third switch control signal Gate C During the time period t5 to t6 having a logic low value, the first switch 604 and the fourth switch 634 remain turned on, and the second switch 614 and the third switch 624 are turned on. ) Is turned off, and a positive pulse is output through the output of the output signal switching means 162.
  • the output signal switch means 162 according to the present invention can generate a second square wave signal.
  • the second square wave signal output from the output signal switch means 162 according to the present invention follows the waveform of the first switch control signal Gate A, the second square wave is changed by changing the duty ratio of the first switch control signal. You can change the duty ratio of the signal.
  • FIG. 8C shows waveforms of the switch control signals and waveforms of the output signal when the DC signal is selected as the active cooler drive signal.
  • the first switch control signal Gate A, the second switch control signal Gate B, the third switch control signal Gate C, and the fourth switch control signal Gate D from the top of the drawing. ) are shown in order.
  • a direct current signal output as an active cooler drive signal is shown as Vout AB at the bottom of the figure.
  • the first switch driving circuit 602 and the fourth switch driving circuit 632 according to the present invention are always configured to output a control signal having a logic high value.
  • the second switch driving circuit 612 and the third switch driving circuit 622 are controlled to remain off (or always output a logic low value). Accordingly, the first switch 604 and the fourth switch 634 continue to be turned on, and the second switch and the third switch 624 continue to be turned off, thereby providing an active cooler.
  • the constant voltage-constant current signal output from the control means 161 is output to the active cooler 300 as it is.
  • the active cooler controller 160 may adjust the duty ratio of the output signal when the active cooler driving signal is output as the first square wave signal or the second square wave signal.
  • the duty ratio adjusting signal input unit PWM Adj and the duty ratio adjusting unit 163 may be further included.
  • the duty ratio adjustment signal input unit PWM Adj is configured to receive a duty ratio adjustment signal for changing the duty ratio of the active cooler driving signal from the outside.
  • the duty ratio adjusting means 163 controls the output signal switching means 162 according to the duty ratio adjusting signal inputted through the duty ratio adjusting signal input unit PWM Adj to output the duty of the first square wave signal or the second square wave signal. Configured to adjust the ratio.
  • the duty ratio of the first square wave signal or the second square wave signal may be adjusted internally for adaptive control of the active cooler 300 or through the duty ratio adjustment signal input unit 108. It may be adjusted according to the duty ratio adjustment signal input from the outside.
  • the active cooler control unit 160 may be further configured to adaptively control the operation of the active cooler 300 according to the heating state of the LED lighting device.
  • the amount of heat generated by the LED lighting device may vary due to various factors.
  • the calorific value of the LED lighting apparatus may be changed by factors such as the number of LED groups driven in the LED lighting apparatus, an external temperature condition, an internal temperature condition, a dimming condition, and the like.
  • the amount of power consumed by the active cooler 300 is operated by predicting and / or measuring the output of the active cooler 300 based on various factors as described above according to the present invention. Can be configured to optimize on a conditional basis.
  • the LED driver 130 is configured to sequentially light up or turn off the first to fourth LED groups 201 to 204 according to the magnitude of the rectified voltage Vrec. Therefore, the number of LED groups that emit light varies according to the magnitude of the rectified voltage Vrec, and thus the amount of heat generated varies. Accordingly, the active cooler control unit 160 according to the present invention determines the magnitude of the rectified voltage Vrec, and the output of the active cooler 300 is appropriately controlled according to the determined magnitude of the rectified voltage Vrec. And to generate / output an active cooler drive signal.
  • the active cooler driving signal is output and / or the magnitude of the active cooler driving signal and / or the active cooler driving signal (the active cooler driving signal is the first square wave signal or the second square wave signal).
  • the duty ratio can be controlled.
  • the active cooler driving signal according to the present invention may be configured to be selectively output in conjunction with the magnitude of the rectified voltage (Vrec).
  • FIG. 9A illustrates waveforms of the rectified voltage and the waveform of the active cooler driving signal of the embodiment in which the active cooler driving signal is selectively output according to the magnitude of the rectified voltage.
  • the active cooler drive signal is set to be output as a DC signal.
  • the active cooler controller 160 is configured to determine the magnitude of the rectified voltage Vrec input from the rectifier 120.
  • the active cooler controller 160 may be configured to output a cooler driving signal.
  • the cooler controller 160 generates an active cooler driving signal only when the determined rectified voltage Vrec is greater than or equal to a preset value (when the magnitude of the rectified voltage Vrec is greater than or equal to 2 VF in FIG. 9A). Therefore, in FIG.
  • the active cooler control unit 160 drops from the time point t11 or t20 to which the magnitude of the rectified voltage Vrec rises to 2 VF or more (t16 or t25). Up to the size of V1 It generates a direct current signal as the active cooler, and outputs a drive signal to the active cooler 300.
  • the active cooler control unit 160 may be configured to change the magnitude (voltage value) of the active cooler driving signal in association with the magnitude of the rectified voltage Vrec. For example, when the magnitude of the rectified voltage Vrec is 1 VF ⁇ Vrec ⁇ 2 VF, an active cooler driving signal having the magnitude of V1 is output, and the magnitude of V2 when the magnitude of the rectified voltage Vrec is 2 VF ⁇ Vrec ⁇ 3 VF.
  • An active cooler driving signal having a voltage is output, and when the magnitude of the rectified voltage Vrec is 3VF ⁇ Vrec ⁇ 4VF, an active cooler driving signal having a magnitude of V3 is output, and the magnitude of the rectified voltage Vrec is 4VF ⁇ Vrec.
  • the active cooler controller 160 may be configured to output an active cooler driving signal having a size of V4.
  • the magnitude of the active cooler drive signal is varied in conjunction with the magnitude of the rectified voltage Vrec
  • the magnitude of the constant voltage-constant current signal output from the active cooler control means 161 is equal to that of the rectified voltage Vrec.
  • the size of the active cooler driving signal is changed as a result.
  • the active cooler driving signal may be a direct current signal or a first square wave signal or a second square wave signal.
  • the voltage value of the DC signal is changed, and in the case of the first square wave signal or the second square wave signal, the voltage value in the pulse-on period may be changed.
  • the active cooler control unit 160 when the output active cooler driving signal is a first square wave signal or a second square wave signal, the active cooler control unit 160 according to the present invention is interlocked with the magnitude of the rectified voltage Vrec.
  • the duty ratio of the active cooler driving signal may be changed.
  • the first square wave signal or the second square wave signal having a duty ratio of 50% is output as the active cooler driving signal
  • the rectified voltage Vrec When the magnitude is 2VF ⁇ Vrec ⁇ 3VF, the first square wave signal or the second square wave signal having a duty ratio of 60% is output as the active cooler driving signal, and when the magnitude of the rectified voltage Vrec is 3VF ⁇ Vrec ⁇ 4VF, 70
  • the first square wave signal having the duty ratio of% or the second square wave signal is output as the active cooler driving signal, and when the magnitude of the rectified voltage Vrec is 4VF ⁇ Vrec, the first square wave signal having the duty ratio of 80% or the second
  • the active cooler control unit 160 may be configured to output the two square wave signals as the active cooler driving signal.
  • the AC LED driver IC 100 according to the present invention is provided outside the AC LED driver IC 100 to detect an external temperature
  • the apparatus may further include a temperature sensing signal input unit Temp. Sense for receiving a temperature sensing signal from the temperature sensing sensor 350 that generates a temperature sensing signal corresponding to the detected temperature.
  • the active cooler control unit 160 according to the present invention generates / outputs an active cooler driving signal so that the output of the active cooler 300 can be properly controlled according to the input temperature sensing signal. It can be configured to.
  • the active cooler driving signal is output and / or the magnitude of the active cooler driving signal and / or the active cooler driving signal (the active cooler driving signal is the first square wave signal or the second square wave signal). Only) can be controlled.
  • FIG. 9B is a diagram illustrating waveforms of an external temperature and an active cooler driving signal according to an exemplary embodiment in which the duty ratio of the active cooler driving signal is changed according to the temperature sensing signal.
  • the active cooler control unit 160 is set to output a second square wave signal as an active cooler driving signal, and has a duty ratio preset according to a temperature section to which the input temperature sensing signal belongs. It is configured to output an active cooler drive signal. More specifically, the active cooler control unit 160 is configured to determine the temperature section to which the input temperature sensing signal belongs.
  • the active cooler controller 160 has a first duty ratio D1 / Ts (for example, 50%) when the input temperature sensing signal belongs to the first temperature section (0 ° C.
  • a second square wave signal having a second duty ratio D2 / Ts (for example, 60%) when the second square wave signal is output and the input temperature sensing signal belongs to the second temperature section (T1 ° C to T2 ° C); And outputs a second square wave signal having a third duty ratio D3 / Ts (for example, 70%) when the input temperature sensing signal belongs to a third temperature section (T2 ° C to T3 ° C).
  • the active cooler control unit 160 outputs a second square wave signal having a first duty ratio during the time interval (0 to t30), and generates a second square wave signal during the time interval (t30 to t31).
  • a second square wave signal having a second duty ratio is output, and a second square wave signal having a third duty ratio is output during the time period t31 to.
  • the embodiment described with reference to Figure 9b is configured to control the duty ratio in a stepwise manner according to the temperature interval.
  • the duty ratio may be configured to increase or decrease linearly according to the input temperature sensing signal.
  • the active cooler controller 160 may be configured to selectively generate / output the active cooler driving signal according to a temperature section to which the input temperature sensing signal belongs. That is, the active cooler controller 160 may generate / output an active cooler driving signal only when the detected current temperature is equal to or greater than a preset threshold temperature.
  • the active cooler control unit 160 may be configured to output an active cooler driving signal having a predetermined size according to a temperature section to which the input temperature sensing signal belongs. Referring back to the example shown in FIG. 9B, the active cooler controller 160 outputs an active cooler driving signal having a magnitude of V1 in the first temperature section and an active cooler driving signal having a magnitude of V2 in the second temperature section. It may be configured to output an active cooler driving signal having a size of V3 in the third temperature section.
  • the size of the active cooler driving signal may be configured to increase or decrease linearly according to the input temperature sensing signal.
  • the active cooler driver 150 may further include a temperature sensor (not shown) provided in the AC LED driving IC (100).
  • the temperature sensor detects a temperature inside the AC LED driving IC 100 and outputs a temperature detection signal corresponding to the detected temperature to the active cooler controller 160.
  • the active cooler control unit 160 outputs the active cooler driving signal and / or the magnitude of the active cooler driving signal and / or the active cooler driving signal (the active cooler driving signal is the first square wave signal or the first square wave signal according to the input temperature sensing signal).
  • the duty ratio of only 2 square wave signals Since the generation and control method of the active cooler driving signal according to the temperature sensing signal is the same as the adaptive control method of the active cooler according to the external temperature condition described above, a detailed description thereof will be omitted.
  • the AC LED driving IC 100 may be configured to adjust the amount of light emitted from the LED groups 201 to 204 according to the dimming signal input from the outside.
  • the dimming control the amount of current flowing through the LED groups 201 to 204 is changed according to the dimming signal, and thus the amount of heat emission from the LED groups () is changed.
  • the active cooler control unit 160 may be configured to generate / output an active cooler driving signal so that the output of the active cooler 300 can be properly controlled according to the input dimming signal.
  • Duty ratio can be controlled.
  • FIG. 9C illustrates a waveform diagram of the dimming level and the active cooler driving signal of the embodiment configured to change the magnitude of the active cooler driving signal according to the dimming level.
  • the active cooler control unit 160 is set to output a first square wave signal as an active cooler driving signal, and has an active cooler having a preset size according to the dimming level to which the input dimming signal belongs. It is configured to output a drive signal. More specifically, the active cooler control unit 160 is configured to determine a dimming level corresponding to the input dimming signal when a dimming signal is input from the outside through the dimming signal input unit DIM.
  • the dimming level corresponding to the input dimming signal is determined by the LED driving controller 130 in the LED driving unit 130, and the determined dimming level is determined by the active cooler from the LED driving control unit 130. It may be configured to be provided to the control means (161).
  • the active cooler controller 160 When the dimming level is determined, the active cooler controller 160 generates / outputs an active cooler driving signal having a set size corresponding to the determined dimming level. In the embodiment shown in FIG. 9C, when the dimming level is 1 level, an active cooler driving signal having a magnitude of V1 is generated, and when the dimming level is 2 levels, an active cooler driving signal having a magnitude of V2 is generated.
  • the active cooler control unit 160 When the dimming level is three levels, the active cooler control unit 160 is configured such that an active cooler driving signal having a size of V3 can be generated. Therefore, the active cooler control unit 160 outputs the first square wave signal having the magnitude of V1 at the pulse-on time point during the time interval (0 to t40) in which the dimming level is one level, and the time interval in which the dimming level is two levels ( outputs a first square wave signal having a magnitude of V2 at a pulse-on time point between t40 and t41), and a first square wave signal having a magnitude of V3 at a pulse-on time point during a time interval (t41 to) where the dimming level is three levels. Outputs
  • the embodiment described with reference to Figure 9c is configured to control the magnitude of the active cooler driving signal in a stepwise manner according to the dimming level.
  • the active cooler driving signal may be linearly increased or decreased in accordance with the input dimming signal.
  • the active cooler controller 160 may be configured to selectively generate / output the active cooler driving signal according to the input dimming signal (or the determined dimming level). That is, the active cooler controller 160 may generate / output an active cooler driving signal only when the current dimming condition is equal to or greater than a preset dimming condition.
  • the active cooler controller 160 drives the first square wave signal or the second square wave signal having a duty ratio varying in association with the input dimming signal (or the determined dimming level). It may be configured to generate as a signal. Similar to the above, the duty ratio of the first square wave signal or the second square wave signal may be changed stepwise according to the dimming level corresponding to the dimming signal, or may be linearly changed according to the dimming signal.
  • the active cooler controller 160 capable of adaptively controlling the output of the active cooler 300 based on the magnitude condition, the external temperature condition, the internal temperature condition, and the dimming condition of the rectified voltage Vrec will be described. It was.
  • the active cooler control unit 160 according to the present invention is not limited thereto, and the active cooler 300 is based on at least two conditions among the magnitude condition, the external temperature condition, the internal temperature condition, and the dimming condition of the rectified voltage Vrec. It may be configured to adaptively control the output of the), and may also be configured to generate an active cooler drive signal based on various conditions necessary for adaptively controlling the active cooler 300 in addition to the above-described conditions. have.
  • FIG. 7 is an exploded perspective view of a bulb-type LED lighting device according to an embodiment of the present invention.
  • the mechanical configuration of the LED lighting apparatus according to the present invention, which is implemented in a bulb type, will be described in detail.
  • the active cooler 300 according to the present invention uses the Nitatiix 'SynJet' as described above.
  • the bulb type LED lighting apparatus includes a first LED group 201, a second LED group 202, a third LED group 203, and a fourth LED group 204. And a heat sink having a substrate on which the AC LED driving IC 100 is mounted, a substrate accommodating portion for accommodating the substrate, and a SynJet accommodating portion for accommodating the SynJet 300. 330 and a housing 340 that can accommodate the heat sink 330 in a state where the substrate and the SynJet 300 are accommodated.
  • the LED lighting apparatus is implemented in the manner illustrated in FIG. 7, since the LED lighting apparatus is configured to include both the passive cooler (heat sink 330) and the active cooler (SynJet 300), the heat radiation effect may be maximized.
  • FIG. 10 is a flowchart illustrating a control process using an AC LED driving IC according to an exemplary embodiment of the present invention.
  • a control process of the LED lighting apparatus using the AC LED driving IC according to the present invention configured as described above with reference to FIG. 10 will be described in detail.
  • FIG. 10 sequentially drives the plurality of LED groups 201 to 204 according to the size of the rectified voltage Vrec, performs the dimming control according to the set dimming level, the size of the rectified voltage,
  • a control process using the AC LED driver IC 100 including the active cooler control unit 160 for adaptively controlling the driving of the active cooler 300 based on the temperature sensing signal and the dimming level is illustrated.
  • the rectifier 120 rectifies the input AC voltage VAC to generate the rectified voltage Vrec, and generates the rectified voltage ( Vrec) is output to the LED driving controller 130, the active cooler controller 160, and the plurality of LED groups 201 to 204 (S1000).
  • the LED driving controller 130 determines the magnitude of the input rectified voltage Vrec (S1010).
  • the LED driving control unit 130 provides a point of time at which the LED driving signal to be provided to the plurality of LED groups 201 to 204 and a blocking point are provided according to the magnitude of the rectified voltage Vrec. Determined by LED group.
  • the LED driving controller 130 determines the size of the LED driving signal to be provided to the plurality of LED groups 201 to 204 according to the current dimming level.
  • the LED driving controller 130 controls the driving of the plurality of LED groups 201 to 204 based on the determined contents. (S1012).
  • the LED driving controller 130 identifies the LED group (s) to be turned on or off according to the size of the rectified voltage Vrec, and the LED having the size determined as the LED group (s) to be turned on.
  • the plurality of LED groups 201 to 204 are driven by providing a driving signal and blocking the provision of the LED driving signal to the LED group (s) to be turned off.
  • the LED driving signal may be a constant current.
  • step S1010 and S1012 are continuously performed, and the LED driving controller 130 determines whether a dimming signal is input from the outside while performing these steps (S1014).
  • the LED driving controller 130 determines the dimming level corresponding to the input dimming signal, changes the currently set dimming level to the dimming level corresponding to the dimming signal, and returns to step S1010. (S1016).
  • the dimming level is changed, the size of the LED drive signal according to the dimming level changed in step S1012 is again determined.
  • the LED driving controller 130 outputs the changed dimming level to the active cooler control unit 160 (S1018).
  • the active cooler controller 160 determines the magnitude of the rectified voltage Vrec input (S1020). According to the embodiment, the determination of the magnitude of the rectified voltage Vrec is performed only by the LED driving controller 130, and the magnitude of the rectified voltage Vrec determined by the LED driving controller 130 is the active cooler controller. It may be configured to be provided to 160.
  • step S1020 the active cooler controller 160 receives a temperature sensing signal output from the temperature sensing sensor 350 (S1022).
  • steps S1020 and S1022 are represented in the manner shown in FIG. 10, but steps S1020 and S1022 may be performed simultaneously or sequentially.
  • step S1020 may be continuously performed in real time, and step S1022 may be configured to be performed at a predetermined cycle.
  • the active cooler controller 160 may generate the active cooler 300 based on the magnitude of the rectified voltage Vrec, the dimming level, and the temperature sensing signal.
  • An active cooler driving signal capable of optimizing the output of the active cooler is generated, and the generated active cooler driving signal is provided to the active cooler 300 to control the driving of the active cooler (S1024).
  • the active cooler control unit 160 determines one control signal among various types of control signals supported by the active cooler driving signal according to a setting, and generates a predetermined type of control signal as the active cooler driving signal. do.
  • the active cooler driving signal is selectively outputted and / or the magnitude of the active cooler driving signal is changed based on the magnitude of the rectified voltage Vrec, the dimming level and the temperature sensing signal.
  • the duty ratio By changing the duty ratio, adaptive control of the active cooler 300 may be achieved.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)

Abstract

La présente invention a trait à un circuit intégré de circuit d'attaque de diode électroluminescente à courant alternatif comprenant un circuit d'attaque de refroidisseur actif adaptatif, à un dispositif d'éclairage à diodes électroluminescentes comprenant celui-ci et à un procédé de commande utilisant celui-ci. Plus particulièrement, la présente invention a trait à un circuit intégré de circuit d'attaque de diode électroluminescente à courant alternatif comprenant un circuit d'attaque de refroidisseur actif adaptatif qui est en mesure de fournir en sortie de façon sélective divers types de signaux de commande afin d'exciter un refroidisseur actif et de commander de façon adaptative l'excitation du refroidisseur actif, à un dispositif d'éclairage à diodes électroluminescentes comprenant celui-ci et à un procédé de commande utilisant celui-ci.
PCT/KR2013/008420 2012-09-18 2013-09-17 Circuit intégré de circuit d'attaque de diode électroluminescente à courant alternatif comprenant un circuit d'attaque de refroidisseur actif adaptatif, dispositif d'éclairage à diodes électroluminescentes comprenant celui-ci et procédé de commande utilisant celui-ci WO2014046469A2 (fr)

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KR1020120103249A KR20140036750A (ko) 2012-09-18 2012-09-18 적응형 액티브 쿨러 구동회로를 포함하는 교류 엘이디 구동 아이씨 및 이를 이용한 제어방법
KR10-2012-0103249 2012-09-18

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KR102462398B1 (ko) * 2015-07-03 2022-11-03 삼성전자 주식회사 디스플레이장치, led 구동회로장치 및 그 제어방법
CN105188186A (zh) * 2015-07-31 2015-12-23 苏州宏展信息科技有限公司 一种具有充电控制的led灯管散热控制系统
CN108617060B (zh) * 2018-06-27 2024-04-05 深圳市明微电子股份有限公司 一种宽输入电压的恒流明驱动电路及装置

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KR20120017694A (ko) * 2010-08-19 2012-02-29 삼성엘이디 주식회사 Ｌｅｄ 램프 및 ｌｅｄ 램프용 구동 회로

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JP2010171014A (ja) * 2009-01-22 2010-08-05 Nanker (Guangzhou) Semiconductor Manufacturing Corp Ｌｅｄ照明器具の電気回路
US20110175537A1 (en) * 2010-01-20 2011-07-21 Alex Horng Ac led lamp
KR20120017694A (ko) * 2010-08-19 2012-02-29 삼성엘이디 주식회사 Ｌｅｄ 램프 및 ｌｅｄ 램프용 구동 회로
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