Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
  • H05B45/30—Driver circuits
  • H05B45/37—Converter circuits
  • H05B45/3725—Switched mode power supply [SMPS]
  • H05B45/38—Switched mode power supply [SMPS] using boost topology
• • 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
  • H02M3/00—Conversion of DC power input into DC power output
  • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
  • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
  • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
  • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
  • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• • 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]
  • H05B45/375—Switched mode power supply [SMPS] using buck topology
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
  • H05B45/40—Details of LED load circuits
  • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
  • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
  • G05F1/10—Regulating voltage or current 
  • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
  • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
  • H05B45/30—Driver circuits
  • H05B45/355—Power factor correction [PFC]; Reactive power compensation
• • 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]

Definitions

• adjusting power preferably refers to the adjustment of a current and/or a voltage.
• the device may function as an interface between a power supply and a storage device, thereby establishing compatibility between said power supply and said storage device (and a load connected to the storage device).
• a given kind of storage device e.g. included in lamp drivers
• load e.g. LED
• different power supplies e.g. electronic transformers
• the control unit is adapted to receive a voltage signal (Vin), which indicates the amount of energy currently stored in the storage device.
• the control unit may directly sense/measure said voltage signal permanently, periodically or aperiodically.
• the control unit may automatically receive the voltage signal periodically or aperiodically from the storage device or a device associated with the storage device, such as a monitoring unit of the storage device.
• the control unit may actively request the voltage signal from the storage device or the monitoring unit.
• the voltage signal may be a voltage that is applied to the storage device. For instance, when the storage device is a capacitor, the voltage signal may be a voltage of the capacitor. Accordingly, the control unit can easily derive, from the voltage signal, an amount of energy stored at present in the storage device. If the voltage signal is received from the monitoring unit, it may be a digital signal of high and low logic voltage levels.
• the control unit comprises a micro controller unit (MCU) and a converter circuit being adapted to adjust the received power.
• the MCU may be a single integrated circuit containing a processor core and a memory and at least one of an analog/digital converter, a comparator, timer/counter means and programmable input/output means.
• the MCU may be adapted to control and monitor an operation of the device.
• the MCU is further adapted to control and/or monitor the storage device and/or the power supply.
• the analog/digital converter may be adapted to convert the received analog voltage signal indicating the amount of energy into a digital signal before further processing.
• the converter circuit may be an amplifier circuit.
• the converter circuit may include a boost converter having a switching device, for instance a MOSFET.
• the converter circuit is adapted to adjust the received power, based on control signals received from the MCU.
• the MCU may periodically or aperiodically provide the control signals to the converter circuit, so that sufficient energy is drawn into the storage device.
• the control signals may be generated based on the measured/determined amount of energy stored in the storage device, but may also be based on at least one further condition such as the reception of external remote control signals, available power, characteristics of the storage device (e.g. maximum storage capacity etc.), the kind of load connected to the storage device, etc.
• the control signals are generated based on the received voltage signal (Vin).
• control signals from the MCU comprise a first control signal for controlling a duty cycle of a switching device included in the converter circuit.
• the switching device may include a metal oxide semiconductor field-effect transistor (MOSFET), an insulated-gate bipolar transistor (IGBT) or a bipolar junction transistor (BJT).
• MOSFET metal oxide semiconductor field-effect transistor
• IGBT insulated-gate bipolar transistor
• BJT bipolar junction transistor
• control signals from the MCU comprise a second control signal for controlling a maximum (or peak) current of the converter circuit.
• the MCU may use one of the first and the second control signal or both control signals to adjust the received power. Using both control signals has advantages with respect to an increased accuracy of the adjustment.
• the first and/or second control signals are pulse width modulation (PWM) signals.
• PWM signals may be high-frequency PWM signals.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Dc-Dc Converters (AREA)
• Circuit Arrangement For Electric Light Sources In General (AREA)
• Supply And Distribution Of Alternating Current (AREA)

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Citations (2)

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• 2012
  • 2012-12-11 WO PCT/IB2012/057160 patent/WO2013088333A1/en not_active Ceased
  • 2012-12-11 CN CN201280061477.XA patent/CN104106018B/zh active Active
  • 2012-12-11 EP EP12820908.7A patent/EP2748688B8/en active Active
  • 2012-12-11 IN IN4755CHN2014 patent/IN2014CN04755A/en unknown
  • 2012-12-11 JP JP2014546700A patent/JP6143778B2/ja active Active
  • 2012-12-11 US US14/365,133 patent/US9380658B2/en active Active
  • 2012-12-11 RU RU2014128630A patent/RU2628527C2/ru active

Patent Citations (2)

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