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WO2018207981A1 - Dispositif d'attaque de charge et dispositif à del le comprenant - Google Patents

Dispositif d'attaque de charge et dispositif à del le comprenant Download PDF

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Publication number
WO2018207981A1
WO2018207981A1 PCT/KR2017/012088 KR2017012088W WO2018207981A1 WO 2018207981 A1 WO2018207981 A1 WO 2018207981A1 KR 2017012088 W KR2017012088 W KR 2017012088W WO 2018207981 A1 WO2018207981 A1 WO 2018207981A1
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WO
WIPO (PCT)
Prior art keywords
voltage
circuit
energy transfer
current source
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/012088
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English (en)
Korean (ko)
Inventor
류태하
정동열
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wellang Co Ltd
Original Assignee
Wellang Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020170134812A external-priority patent/KR102156333B1/ko
Application filed by Wellang Co Ltd filed Critical Wellang Co Ltd
Publication of WO2018207981A1 publication Critical patent/WO2018207981A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from AC input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters

Definitions

  • Semiconductor light emitting devices include devices such as LEDs (Light Emitting Diodes), and have various advantages such as low power consumption, high luminance, and long lifetime, and the use area of the semiconductor light emitting device is increasing as a light source.
  • LEDs Light Emitting Diodes
  • advantages such as low power consumption, high luminance, and long lifetime, and the use area of the semiconductor light emitting device is increasing as a light source.
  • the proportion of adopting LEDs instead of conventional fluorescent lamps and halogen lamps is increasing for indoor and outdoor lighting systems.
  • a driving apparatus for driving the LED module is required.
  • the operation characteristics of the respective LED elements are not all the same, and the drive voltage or drive current supplied to the LED module may not be constant. Thus, a driving apparatus with improved performance is required.
  • the technical idea of the present disclosure provides a load driving device for supplying a current / voltage to a load such as an LED module with an improved power factor and an LED device including the same.
  • a load driving apparatus including: a conversion circuit that generates a first voltage as an output signal based on an input voltage; A calibration capacitor coupled to the conversion circuit, the calibration capacitor performing a charging or discharging operation based on at least a portion of the first voltage; An energy transfer circuit coupled to the calibration capacitor to receive at least a portion of the first voltage and to output a second voltage to a load based on at least a portion of the first voltage; And a current source coupled to the energy transfer circuit and to the conversion circuit, respectively, and to provide the calibration current to the conversion circuit.
  • the current source may output a current having a phase substantially the same as the phase of the first voltage as the calibration current.
  • a load driving apparatus includes a first control signal for controlling operation of the energy transfer circuit, based on a voltage level applied to at least one of the calibration capacitor and the current source, And a first control circuit for outputting the control signal to the circuit.
  • a controller is configured to control a current flowing through the current source to a second control signal that controls an output of the current source based on at least one of the first voltage, the second voltage, And a second control circuit for outputting the second control signal.
  • the conversion circuit may include a rectification circuit for rectifying the input voltage and outputting it as the first voltage.
  • the calibration capacitor and the current source may be connected in series, and the energy transfer circuit may be connected in parallel with the calibration capacitor.
  • the energy transfer circuit may output the second voltage to a load, one end connected to the calibration capacitor and the other end connected to the current source, respectively.
  • an energy transfer circuit includes a DC-DC converter including a switch whose turn-on / turn-off is controlled based on a voltage level applied to one of the calibration capacitor and the current source can do.
  • the current source may output a current having a phase substantially equal to the phase of the first voltage as the loop current.
  • an LED driving apparatus includes a first control signal for controlling an operation of the energy transfer circuit based on a voltage level applied to at least one of the calibration capacitor and the current source, And a first control circuit for outputting the control signal to the circuit.
  • a controller may control a second control signal to control an output of the current source based on at least one of the first voltage, the second voltage, and the current applied to the LED module, And a second control circuit for outputting the second control signal.
  • the first circuit may be coupled to the LED module.
  • a load driving apparatus with improved power factor and harmonic distortion characteristics can be provided.
  • FIG. 1 is a schematic block diagram of an electronic device according to an exemplary embodiment of the present disclosure
  • FIGS. 2A to 2D are views for explaining a driving apparatus according to an exemplary embodiment of the present disclosure.
  • Figure 3 shows a block diagram of a drive according to an exemplary embodiment of the present disclosure
  • FIGS. 4A to 4D are views for explaining a driving apparatus according to an exemplary embodiment of the present disclosure.
  • FIG. 6 shows a specific circuit diagram of a load driving device according to another exemplary embodiment of the present disclosure.
  • Figure 8 shows a block diagram of a drive according to an exemplary embodiment of the present disclosure
  • FIG. 9 shows a block diagram of a drive according to an exemplary embodiment of the present disclosure.
  • FIG. 1 is a schematic block diagram of an electronic device according to an exemplary embodiment of the present disclosure
  • the electronic device 10 may include a power source PS, a load driving device 100, and a load LO.
  • the power supply PS supplies the input voltage V AC to the load driving apparatus 100 and the load driving apparatus 100 can appropriately convert the supplied input voltage V AC to drive the load LO have.
  • the input voltage V AC may be an AC voltage.
  • the load driving apparatus 100 can supply the driving voltage to the load LO based on the input voltage V AC to drive the load LO.
  • the load driving apparatus 100 may include an energy transfer circuit 120 connected to the first circuit 110 and the first circuit 110.
  • the first circuit 110 may receive an input voltage (V AC) and outputting electrical energy based on the input voltage (V AC), the energy transfer circuit 120.
  • V AC input voltage
  • the first circuit 110 may rectify the input voltage V AC and output it to the energy transfer circuit 120.
  • the first circuit 110 comprises a conversion circuit for generating a first voltage as an output signal based on an input voltage (V AC ), a calibration circuit for performing a charging or discharging operation based on the first voltage A capacitor and a conversion circuit, and a current source coupled to the calibration capacitor and outputting a calibration current.
  • the current source may output a current having substantially the same phase as the rectified input voltage V AC as a calibration current. A detailed description thereof will be described later.
  • the energy transfer circuit 120 may be electrically connected to the first circuit 110 and may transfer the electrical energy output from the first circuit 110 to the load LO.
  • the load LO is electrically connected to the energy transfer circuit 120 and is not directly connected to the first circuit 110, but is not limited thereto. In other words, the load LO may be electrically connected to the energy transfer circuit 120 and the first circuit 110.
  • the energy transfer circuit 120 may be turned on or off based on the electrical state of the first circuit 110. In one example, based on the voltage level applied to the calibration capacitor or current source included in the first circuit 110, the energy transfer circuit 120 may perform an energy transfer operation. A detailed description thereof will be described later.
  • the load LO can be driven by receiving electrical energy from the load driving apparatus 100.
  • the load (LO) may be, for example, a light emitting diode (LED) module.
  • the load LO may consume all or a part of the electric energy supplied from the load driving apparatus 100.
  • the load (LO) for example, may consume the supplied electrical energy as light energy and / or heat energy.
  • the load (LO) is an LED module, but it will be understood that the technical idea of the present disclosure is not limited thereto.
  • FIGS. 2A to 2D are diagrams for explaining a load driving apparatus according to an exemplary embodiment of the present disclosure.
  • FIGS. 2A and 2B are block diagrams of a load driving apparatus according to an exemplary embodiment of the present disclosure
  • FIGS. 2C and 2D are graphs showing waveforms of voltage or current for each configuration of a load driving apparatus, do.
  • FIGS. 2A to 2D may be views for specifically describing the load driving apparatus 100 of FIG.
  • the load driving apparatus 100 may include an energy transfer circuit 120 connected to the first circuit 110 and the first circuit 110.
  • the first circuit 110 may include a conversion circuit 112, a calibration capacitor 114 and a current source 116.
  • converter circuit 112 may comprise a rectifier circuit for being supplied with an input voltage (V AC), rectifies the input voltage (V AC) output to a first voltage (V s) .
  • V AC input voltage
  • V s first voltage
  • the first voltage V s may have a second frequency that is different from the first frequency.
  • the second frequency may be twice the first frequency.
  • the calibration capacitor 114 is coupled to the conversion circuit 112 and is capable of receiving at least a portion of the first voltage V s .
  • Calibration capacitor 114 may perform a charge or discharge operation based on at least a portion of the first voltage V s .
  • the voltage V CB applied to the calibration capacitor 114 may be approximately the same as the first voltage V s .
  • the current source 116 is connected to the conversion circuit 112 and the calibration capacitor 114 and is capable of outputting the calibration current i s delivered to the conversion circuit 112. Specifically, one end of the current source 116 may be connected to the conversion circuit 112 and the other end may be connected to the calibration capacitor 114. In an exemplary embodiment, the current source 116 may output a current having a phase substantially the same as the phase of the first voltage V s as the calibration current i S.
  • the calibration current i s may be termed the loop current of the first circuit 110.
  • the current source 116 outputs the calibration current i S , it is transferred back to the load LO via the energy transfer circuit 120 based on the first voltage V s .
  • the current can be limited based on the calibration current (i S ).
  • the load driving apparatus 100 has an improved power factor pf, Lt; / RTI >
  • Energy transfer circuit 120 is first to the first circuit 110 is connected to a first voltage (V s) at least a load (LO), at least on the basis of a part of receiving the supply part, a first voltage (V s) of the 2 It is possible to output the voltage (V O ) and the load current (i L ).
  • the load current i L may mean a current applied to the imaginary load through the terminals T_L under the assumption that there is a load (for example, LO in Fig. 1).
  • the configuration of the load driving apparatus 100a is similar to that of the load driving apparatus 100 described with reference to Fig. 2A.
  • the load driving apparatus 100 may further include the switch 115a in the first circuit 110a.
  • the switch 115a may be disposed between the calibration capacitor 114a and the current source 116a.
  • the switch 115a may comprise one or more transistors.
  • the switch 115a can disperse stresses such as internal pressure, for example, during the electrical operation of the first circuit 110a.
  • the electrical state of each configuration included in the load driving apparatus 100 is shown.
  • the first voltage V s is expressed by the following equation (1)
  • the calibration current i s is expressed by the equation (2)
  • the voltage V CB of the calibration capacitor 114 can be expressed by Equation (3), respectively.
  • V S and I S are proportional constants and C B can be the capacitance of the calibration capacitor 114.
  • C B can be the capacitance of the calibration capacitor 114.
  • the change of the first voltage V s with time and the voltage V CB of the calibration capacitor 114 may be as shown in FIG. 2C.
  • the voltage V CB of the calibration capacitor 114 may be larger than the first voltage V s when following Equation (3). However, since the voltage greater than the first voltage V s can not be charged in the calibration capacitor 114 and the energy transfer circuit 120 is turned on in the second period T P , the second period T P , the voltage V CB of the calibration capacitor 114 may be approximately equal to the first voltage V s .
  • the energy transfer circuit 120 transfers energy corresponding to the first region RG1 to the load LO and the voltage V (V) of the calibration capacitor 114 CB and the first voltage V s are approximately equal to each other.
  • the current flowing in the calibration capacitor 114 in the second section T P can be expressed by the following equation (4).
  • the current i P flowing to the energy transfer circuit 120, P ETU which is the power supplied to the energy transfer circuit 120, and P O , the power supplied to the load LO, (5) < / RTI >
  • Equation (5) May represent energy transfer efficiency from the energy transfer circuit 120 to the load LO.
  • the overall efficiency of the load driving apparatus 100 is the efficiency of the energy transfer circuit 120 .
  • the load driving apparatus includes a current source that outputs a calibration current whose input voltage has the same phase as the rectified voltage (for example, the first voltage V S ), so that the power factor and the harmonic distortion The characteristics can be improved. Further, in the case of the LED driving device in which the load driving device supplies the driving current / voltage to the LED module, the electromagnetic wave interference characteristic is improved and the EMI filter is omitted, Can be reduced. Further, the load driving device according to the embodiment of the present disclosure can suppress the heat generation due to the driving of the circuit elements, and the driving life can be improved.
  • FIG. 3 shows a block diagram of a load driving device according to an exemplary embodiment of the present disclosure. Among the configurations shown in Fig. 3, duplicate descriptions will be avoided in comparison with Figs. 2A to 2D.
  • the first control circuit 232 is based on a voltage (V CB ) applied to the calibration capacitor 214 or a voltage (V AK ) applied to the current source 216,
  • the first control signal CTRL_1 for controlling the turn-on and turn-off of the power supply 220 can be output to the energy transfer circuit 220.
  • the energy transfer circuit 220 includes a switch-mode power supply including a switch
  • the first control circuit 232 outputs a first control signal CTRL_1 to the switch, Turn-off can be controlled.
  • the first control circuit 232 controls the energy transfer circuit 220 to be turned off when the voltage V CB applied to the calibration capacitor 214 is less than a predetermined reference voltage,
  • the energy transfer circuit 220 can be controlled to be turned on when the voltage V CB applied to the calibration capacitor 214 is equal to or greater than a predetermined reference voltage.
  • the second control circuit 234 is connected to at least one of the first voltage V s , the second voltage V o and the current delivered from the energy transfer circuit 220 to the load (for example, LO in Fig. 1)
  • the output of the current source 216 can be controlled.
  • the second control circuit 234 outputs the first voltage V S , the second voltage V O , and the current delivered from the energy transfer circuit 220 to the load (for example, LO in FIG. 1)
  • the output of the current source 216 is controlled based on the output signal of the current source 216.
  • the present invention is not limited thereto.
  • the second control circuit 234 is coupled to the first voltage V s , the second voltage V o , and the load (e.g., LO in Fig. 1) in the energy transfer circuit 220
  • a second control signal CTRL_2 that controls the current source 216 to output a calibration current i S having the same phase as the first voltage V S , based on at least one of the currents to be transmitted, As shown in FIG.
  • the second control circuit 234 may control the first voltage V s , the second voltage V o , and the current delivered from the energy transfer circuit 220 to the load (e.g., LO in Fig. 1)
  • the second control signal CTRL_2 can be output to the current source through a linear operation such as adding or multiplying control signals based on the control signal CTRL_2 and / or a nonlinear operation.
  • the second control circuit 234 can control the current source 216 to improve the power factor of the load driving device 200.
  • the second control circuit 234 also controls the current source 216 to maintain the current flowing in the LED or the voltage across the LED constant if the load (e.g., LO in Figure 1) is an LED module So that a stable optical output can be obtained.
  • the second control circuit 234 also controls the current source 216 to control the dimming operation by reducing or increasing the current flowing through the LEDs included in the load (e.g., LO in Figure 1) It is possible.
  • FIGS. 4A and 4B show respective circuit diagrams of a load driving apparatus according to an exemplary embodiment of the present disclosure
  • FIG. 4C shows an equivalent circuit of a first circuit and an energy transfer circuit in an energy transfer circuit operation
  • And waveforms of voltage and current according to turn-on / turn-off respectively.
  • the gate driver 322, the diode 324, the inductor 326 and the switch TR1 included in the energy transfer circuit 320 may form, for example, a buck-boost converter structure.
  • the energy transfer circuit 320 transfers at least a portion of the energy received from the input voltage V AC to the load (e.g., LO in FIG. 1), based on the turn-on and turn-off of the switch TR1 .
  • the first control circuit 332 turns off the switch TR1 through the gate driver 322,
  • the calibration capacitor 314 can be charged through the calibration current i s output from the current source 316.
  • the energy stored in the inductor 326 can be transferred to a load (for example, LO in FIG. 1), so that the one cycle operation of the energy transfer circuit 320 can be completed.
  • the third mode section MD3 may be defined from the completion of the energy transfer of the inductor 326 to the turn-on point of the switch TR1.
  • the calibration current i S can charge the calibration capacitor 314.
  • the average of the voltage V CB of the calibration capacitor 314 in the first to third mode sections MD 1 to MD 3 may be approximately equal to the first voltage V S.
  • the dimming controller 640 receives a dimming signal (DIM) from the outside of the load driver 600 and, based thereon, outputs a dimming control signal CTRL_DIM to the second control circuit 634 can do.
  • DIM dimming signal
  • the dimming controller 640 controls the dimming To the second control circuit 634, a dimming control signal CTRL_DIM that controls the level of the second reference voltage (e.g., Vref2 in FIG. 4) based on the signal DIM.
  • the dimming controller 640 may have various configurations for controlling current or voltage applied to the LED module.
  • FIG. 8 shows a block diagram of a load driving device according to an exemplary embodiment of the present disclosure. Among the configurations shown in Fig. 8, duplicate descriptions will be avoided in comparison with Figs. 2A to 2D.
  • the load driving apparatus 700 may include a first circuit 710 and an energy transfer circuit 720.
  • the first circuit 710 may include a conversion circuit 712, a calibration capacitor 714, and a current source 716.
  • the energy transfer circuit 720 is based on at least a portion of the first connected to the circuit 710 being supplied to at least a portion of the first voltage (V S), the first voltage (V S), second to the load (not shown) 2 < / RTI & gt ; voltage (V O ).
  • the energy transfer circuit 720 may output a second voltage (V O ) to a load (not shown) coupled to the first circuit 710.
  • the energy transfer circuit 720 can output a second voltage (V O ) to a load (not shown), one end connected to a calibration capacitor 714 and the other end connected to a current source 716 .
  • a load (not shown) in which the energy transfer circuit 720 outputs the second voltage V O is connected to at least one of the conversion circuit 712, the calibration capacitor 714, and the current source 716, circuit can be formed.
  • the load (not shown) is connected to the calibration capacitor 714 and the current source 716 so that the stress that the device (e.g., the inductor) contained in the calibration capacitor 714 and the energy transfer circuit 720 can withstand have.
  • the electrical stability of the load driving apparatus 700 can be improved.
  • FIG. 9 shows a block diagram of a load driving device according to an exemplary embodiment of the present disclosure. Among the configurations shown in FIG. 9, duplicate descriptions will be avoided in comparison with FIG.
  • the load driving apparatus 800 may further include a controller 830.
  • the controller 830 may include a first control circuit 832 and a second control circuit 834.
  • the first control circuit 832 is connected to the power supply circuit 820 based on at least one level of the voltage V CB applied to the calibration capacitor 814 and the voltage V AK applied to the current source 816 The operation can be controlled.
  • the first control circuit 832 controls the energy transfer circuit 820 to be turned off when the voltage V CB applied to the calibration capacitor 814 is less than a predetermined reference voltage,
  • the energy transfer circuit 820 can be controlled to be turned on when the voltage V CB applied to the calibration capacitor 814 is equal to or greater than a predetermined reference voltage.
  • the second control circuit 834 may control the output of the current source 816 based on at least one of the first voltage V s , the second voltage V o and the load current i L. Although the second control circuit 834 is shown in the figure to control the output of the current source 816 based on the first voltage V s , the second voltage V o and the load current i L , This is for convenience of explanation, but is not limited thereto.
  • the second control circuit 834 controls the current source 816 to improve the power factor of the load driving device 800. [ The second control circuit 834 controls the current source 816 to maintain the current flowing in the LED or the voltage across the LED constant, for example, when the load (not shown) is an LED module, Can be obtained. The second control circuit 834 may also control the current source 816 to control the dimming operation by reducing or increasing the current flowing through the LEDs included in the load (not shown).
  • the load driving apparatus 900 may include a first circuit 910, an energy transfer circuit 920, and a controller 930.
  • the energy transfer circuit 920 may include a gate driver 922, a diode 924, an inductor 926 and a switch TR4.
  • the gate driver 922, the diode 924, the inductor 926 and the switch TR4 included in the energy transfer circuit 920 can form, for example, a buck converter structure.
  • the energy transfer circuit 920 can transfer at least a portion of the energy received from the input voltage V AC to a load (not shown), based on the turn-on and turn-off of the switch TR4.
  • the first voltage V S and the calibration current i S can be assumed to be DC, respectively.
  • the voltage V CB of the calibration capacitor 914 can be applied across the inductor 926 in the first mode section MD1 'in which the switch TR4 is turned on. Accordingly, the energy stored in the form of a voltage on the calibration capacitor 914 can be transferred to the inductor 926 in the form of a current.
  • the third mode section MD3 ' may be defined from the completion of energy transfer of the inductor 926 to the turn-on point of the switch TR4.
  • the calibration current i s can charge the calibration capacitor 914.
  • the average of the voltage V CB of the calibration capacitor 914 in the first to third mode sections MD 1 'to MD 3' is obtained by subtracting the second voltage V O from the first voltage V S , . ≪ / RTI >
  • the energy transfer circuit 920 is operated in the discontinuous conduction mode, but the present invention is not limited thereto. That is, the energy transfer circuit 920 may operate in a continuous conduction mode in which the third mode section MD3 'is omitted.
  • Socket 1010 may be configured to be replaceable with a legacy lighting device. Electric power supplied to the lighting apparatus 1000 may be applied through the socket 1010, for example, an AC voltage may be applied to the socket 1010.
  • the power supply unit 1020 may be separately assembled into the first power supply unit 1021 and the second power supply unit 1022.
  • the first power supply section 1021 may include the conversion circuit 112 of FIG. 2A
  • the second power supply section 1022 may include at least a portion of the load driving apparatus 100.
  • the heat dissipation unit 1030 may include an internal heat dissipation unit 1031 and an external heat dissipation unit 1032.
  • the internal heat dissipation unit 1031 may be directly connected to the light source 1040 and / Heat can be transmitted to the external heat dissipating unit 1032 through the heat dissipating unit 1032.
  • the optical portion 1050 may include an inner optical portion (not shown) and an outer optical portion (not shown), and may be configured to evenly distribute the light emitted by the light source 1040.
  • the light source 1040 may receive power from the power source unit 1020 and emit light to the optical unit 1050.
  • the light source 1040 may include a plurality of LED packages 1041, a circuit board 1042, and at least one integrated circuit package 1043.
  • the at least one integrated circuit package 1043 may include at least some of the load driving devices according to the exemplary embodiments of the present disclosure.
  • the lighting apparatus 1000 can adjust the color rendering index (CRI) from the sodium (Na) or the like to the solar light level and can generate various white light at the color temperature from the candle (1500K) to the blue sky (12000K) If necessary, the illumination color can be adjusted to the ambient atmosphere or mood by generating visible light of purple, blue, green, red, or orange or infrared light. It may also generate light of a special wavelength that can promote plant growth.
  • CRI color rendering index
  • the configuration of the lighting apparatus 1000a is similar to that of the lighting apparatus 1000 described with reference to Fig. 11A.
  • the first and second power sources 1021 and 1022 described in FIG. 11A may be omitted in the illumination device 1000a.
  • the light source 1040a may include a passive device 1045a and a passive circuit package 1044a including various power sources.
  • the integrated circuit package 1044a may include at least some of the load driving devices according to the exemplary embodiments of the present disclosure.
  • the light source 1040a disclosed in this embodiment can be named, for example, as a drive on board (DOB) structure.
  • DOE drive on board
  • FIG. 12 is a block diagram illustrating an illumination system including a load driver according to an exemplary embodiment of the present disclosure
  • the illumination system 2000 may include a sensor device 2100, a control and communication device 2200, and a lighting device 2300 that include a plurality of sensors.
  • the sensor device 2100 may include various sensors such as a humidity sensor 2110, an illuminance sensor 2120, a GPS sensor 2130, a motion sensor 2140, an optical sensor 2150 and a temperature sensor 2160 . Some of the sensors included in the sensor apparatus 2100 may be provided as one module together with the illumination apparatus 2300.
  • the control and communication device 2200 may be communicatively coupled to the sensor device 2100 to receive various sensing information received from the sensor device 2100.
  • the control and communication device 2200 may include various communication interfaces such as I2C, SPI, UART, DALI, RS485, etc., and the sensor device 2100 may be connected to at least one of the communication interfaces, ). ≪ / RTI >
  • the illumination device 2300 may include a light source 2310 including, for example, an LED, and a drive device 2320 for supplying a drive voltage / current, etc. to the light source 2310.
  • the driving device 2320 may include the driving device disclosed in Figures 1 through 9c.

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  • Power Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne un dispositif d'attaque de charge. Un dispositif d'attaque de charge selon un mode de réalisation de la présente invention peut comprendre : un circuit de conversion pour générer une première tension en tant que signal de sortie sur la base d'une tension d'entrée ; un condensateur d'étalonnage qui est connecté au circuit de conversion, et effectue une opération de charge ou de décharge sur la base d'au moins une partie de la première tension ; un circuit de transfert d'énergie qui est connecté au condensateur d'étalonnage pour recevoir au moins une partie de la première tension, et délivre une seconde tension à une charge sur la base de ladite partie de la première tension ; et une source de courant dont une extrémité est connectée au circuit de transfert d'énergie et dont l'autre extrémité est connectée au circuit de conversion, et qui fournit un courant d'étalonnage au circuit de conversion.
PCT/KR2017/012088 2017-05-12 2017-10-30 Dispositif d'attaque de charge et dispositif à del le comprenant Ceased WO2018207981A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20170059315 2017-05-12
KR10-2017-0059315 2017-05-12
KR1020170134812A KR102156333B1 (ko) 2017-05-12 2017-10-17 부하 구동장치 및 이를 포함하는 led 장치
KR10-2017-0134812 2017-10-17

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WO2018207981A1 true WO2018207981A1 (fr) 2018-11-15

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Citations (5)

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US20130278157A1 (en) * 2010-12-21 2013-10-24 Koninklijke Philips Electronics N.V. Device and method for controlling current to solid state lighting circuit
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KR101142089B1 (ko) * 2011-12-14 2012-05-14 엔엘티테크주식회사 Ｌｅｄ 조명 장치용 교류-직류 변환장치 및 이를 이용하는 ｌｅｄ 조명장치
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