WO2021237658A1 - Dispositif et procédé de commande de pompe de charge - Google Patents

Dispositif et procédé de commande de pompe de charge Download PDF

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Publication number
WO2021237658A1
WO2021237658A1 PCT/CN2020/093202 CN2020093202W WO2021237658A1 WO 2021237658 A1 WO2021237658 A1 WO 2021237658A1 CN 2020093202 W CN2020093202 W CN 2020093202W WO 2021237658 A1 WO2021237658 A1 WO 2021237658A1
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WO
WIPO (PCT)
Prior art keywords
charge pump
input
circuit
pulse width
width modulation
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/CN2020/093202
Other languages
English (en)
Inventor
Qiuxiang MAO
Shengdie Lin
Shuanghong Wang
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.)
Tridonic GmbH and Co KG
Original Assignee
Tridonic GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Priority to EP20937569.0A priority Critical patent/EP4133585A4/fr
Priority to PCT/CN2020/093202 priority patent/WO2021237658A1/fr
Priority to CN202080100221.XA priority patent/CN115461974B/zh
Publication of WO2021237658A1 publication Critical patent/WO2021237658A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • 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
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4266—Arrangements for improving power factor of AC input using passive elements
    • 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
    • H02M3/01—Resonant DC/DC converters
    • 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
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33571—Half-bridge at primary side of an isolation transformer
    • 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
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/06—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • 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]
    • 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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • Embodiments of the present disclosure generally relate to the field of power control circuits, and more particularly, to a device and method of controlling charge pump.
  • a charge pump circuit is often applied in a power control circuit.
  • series charge pump caps are added in some solutions for improving THD (Total Harmonic Distortion) and/or harmonic.
  • one stage power factor correction (PFC) function may be added for different loads, however the cost of the PFC function is also high. Furthermore, these solutions are time consuming during development, and bad performance of harmonic will limit an operation range.
  • PFC power factor correction
  • embodiments of the present disclosure provide a device and method of controlling charge pump. It is expected to decrease the number of components and the cost while improving THD and/or harmonic with a simple structure.
  • a device of controlling charge pump includes: a charge pump circuit connected to an input circuit and an output circuit; a first capacitor coupled to the charge pump circuit and provided as an element of a resonant circuit; a first switching element connected to the first capacitor; wherein a capacitance value of the first capacitor is changed by a switching operation of the first switching element; and a controller configured to read an input current and/or an input voltage from the input circuit, generate a pulse width modulation signal according to the input current and/or the input voltage, and output the pulse width modulation signal to control the first switching element.
  • the controller is configured to adjust the pulse width modulation signal to improve a power factor or a total harmonic distortion or a harmonic of the resonant circuit.
  • the controller is configured to modify a charge pump cap value of the charge pump circuit in a power frequency cycle.
  • the charge pump cap value of the charge pump circuit is modified along with the changed capacitance value of the first capacitor which is controlled by the pulse width modulation signal.
  • the controller is configured to find a charge pump cap value of the charge pump circuit under one of a plurality of different loads.
  • the controller is configured to change a duty cycle of the pulse width modulation signal to modify the charge pump cap in a certain load, determine whether an input power or the input voltage or an input frequency is changed, and maintain the pulse width modulation signal when the input power or the input voltage or the input frequency is not changed.
  • the device further comprises: a second capacitor coupled to the charge pump circuit and provided as an element of the resonant circuit; wherein the second capacitor is connected in parallel with the first capacitor.
  • the device further comprises: a second switching element configured between the first switching element and the controller; wherein the pulse width modulation signal from the controller is used to control the second switching element, and the second switching element is configured to generate a signal to control the first switching element.
  • a method of controlling charge pump wherein a charge pump circuit is connected to an input circuit and an output circuit; a first capacitor is coupled to the charge pump circuit and provided as an element of a resonant circuit; a first switching element is connected to the first capacitor;
  • the method comprises: reading an input current and/or an input voltage from the input circuit; generating a pulse width modulation signal according to the input current and/or the input voltage, and outputting the pulse width modulation signal to control the first switching element; wherein a capacitance value of the first capacitor is changed by a switching operation of the first switching element.
  • the method further comprises: adjusting the pulse width modulation signal to improve a power factor or a total harmonic distortion or a harmonic of the resonant circuit.
  • the method further comprises: modifying a charge pump cap value of the charge pump circuit in a power frequency cycle.
  • the charge pump cap value of the charge pump circuit is modified along with the changed capacitance value of the first capacitor which is controlled by the pulse width modulation signal.
  • the method further comprises: finding a charge pump cap value of the charge pump circuit under one of a plurality of different loads.
  • the method further comprises: changing a duty cycle of the pulse width modulation signal to modify the charge pump cap in a certain load; determining whether an input power or the input voltage or an input frequency is changed, and maintaining the pulse width modulation signal when the input power or the input voltage or the input frequency is not changed.
  • a power driver in a third aspect, includes: a charge pump circuit connected to an input circuit and an output circuit; a resonant circuit coupled to the charge pump circuit; a switching element connected to a capacitor of the resonant circuit; wherein a capacitance value of the capacitor is changed by a switching operation of the switching element; and a controller configured to read an input current and/or an input voltage from the input circuit, generate a pulse width modulation signal according to the input current and/or the input voltage, and output the pulse width modulation signal to control the switching element.
  • a first switching element and a controller are provided and a capacitance value of a first capacitor is changed by a switching operation of the first switching element. Therefore, THD and harmonic can be improved while the cost of the circuit is decreased.
  • Fig. 1 is a diagram which shows a device of controlling charge pump in accordance with an embodiment of the present disclosure
  • Fig. 2 is a diagram which shows a waveform example without capacitance controlling in accordance with an embodiment of the present disclosure
  • Fig. 3 is a diagram which shows a waveform example with capacitance controlling in accordance with an embodiment of the present disclosure.
  • Fig. 4 is a diagram which shows a method of controlling charge pump in accordance with an embodiment of the present disclosure
  • Fig. 5 is another diagram which shows a method of controlling charge pump in accordance with an embodiment of the present disclosure
  • Fig. 6 is a diagram which shows a power driver in accordance with an embodiment of the present disclosure.
  • the terms “first” and “second” refer to different elements.
  • the singular forms “a” and “an” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term “based on” is to be read as “based at least in part on” .
  • the term “cover” is to be read as “at least in part cover” .
  • the term “one embodiment” and “an embodiment” are to be read as “at least one embodiment” .
  • the term “another embodiment” is to be read as “at least one other embodiment” .
  • Other definitions, explicit and implicit, may be included below.
  • a digital controlling manner is provided to perform stable controlling with a simple structure.
  • a controller in the disclosure is a micro controller unit (MCU) , and it is not limited thereto.
  • MCU micro controller unit
  • a device of controlling charge pump is provided in the embodiments.
  • Fig. 1 is a diagram which shows a device of controlling charge pump in accordance with an embodiment of the present disclosure.
  • a device 100 of controlling charge pump includes: a charge pump circuit 101 connected to an input circuit 1011; a first capacitor 102 (C4) coupled to the charge pump circuit 101 and provided as an element of a resonant circuit (such as a LLC circuit) ; a first switching element 103 (Q1) connected to the first capacitor 102.
  • a capacitance value of the first capacitor 102 is changed by a switching operation (ON/OFF) of the first switching element 103.
  • a capacitance value C on of the first capacitor 102 when the first switching element 103 is ON is different from a capacitance value C off of the first capacitor 102 when the first switching element 103 is OFF.
  • the device 100 of controlling charge pump further includes: a controller 104 configured to read an input current and/or an input voltage (Vin) from the input circuit 1011, generate a pulse width modulation (PWM) signal according to the input current and/or the input voltage, and output the pulse width modulation signal to control the first switching element 103.
  • a controller 104 configured to read an input current and/or an input voltage (Vin) from the input circuit 1011, generate a pulse width modulation (PWM) signal according to the input current and/or the input voltage, and output the pulse width modulation signal to control the first switching element 103.
  • PWM pulse width modulation
  • Fig. 1 some components or elements not shown in Fig. 1 may be added, while components or elements such as C1-C5, D1-D5, R1-R5, and Vcc shown in Fig. 1 but not explained can be referred in the relevant art.
  • the controller 104 is configured to adjust the pulse width modulation signal to improve a power factor (PF) or a total harmonic distortion (THD) or a harmonic of the resonant circuit.
  • PF power factor
  • TDD total harmonic distortion
  • the controller 104 is configured to operation in an open-loop manner.
  • the controller 104 read the input current and the input voltage, and calculate an input power according to the input current and the input voltage. Then the controller 104 compares the calculated input power and a predefined power, and change the PWM signal when the calculated input power is not consistent with the predefined power.
  • the controller 104 is configured to operation in a close-loop manner.
  • the controller 104 read the input current and the input voltage, and calculate an input power according to the input current and the input voltage. Then the controller 104 change the PWM signal, correspondingly, the input current and/or input voltage is/are changed along with the changed PWM signal. Then controller 104 determines a PWM signal when the input power is stable.
  • PF power factor
  • TDD total harmonic distortion
  • the controller 104 is configured to modify a charge pump cap value of the charge pump circuit in a power frequency cycle.
  • the charge pump cap value of the charge pump circuit 101 is modified along with the changed capacitance value of the first capacitor 102 which is controlled by the pulse width modulation signal.
  • series charge pump caps are nor needed for a widen voltage product, such as a light emitting diode (LED) .
  • THD and harmonic can be improved while the cost of the circuit is decreased.
  • the controller 104 is configured to find a charge pump cap value of the charge pump circuit under one of a plurality of different loads. For example, the controller 104 may analyze which value is best for PF, THD and/or harmonic at a certain load, and maintain the charge pump cap value and the PWM signal at the load.
  • the controller 104 is configured to change a duty cycle of the pulse width modulation signal to modify the charge pump cap in a certain load, determine whether an input power or the input voltage or an input frequency is changed, and maintain the pulse width modulation signal when the input power or the input voltage or the input frequency is not changed.
  • the charge pump cap value can be modified under different loads, performance of the circuit can be improved while the cost of the circuit is not high.
  • the device 100 of controlling charge pump further includes: a second capacitor 105 (C3) coupled to the charge pump circuit 101 and provided as an element of the resonant circuit; the second capacitor 105 is connected in parallel with the first capacitor 102.
  • a second capacitor 105 C3 coupled to the charge pump circuit 101 and provided as an element of the resonant circuit; the second capacitor 105 is connected in parallel with the first capacitor 102.
  • the device 100 of controlling charge pump further includes: a second switching element 106 (Q2) configured between the first switching element 103 and the controller 104; the pulse width modulation signal from the controller 104 is used to control the second switching element 106, and the second switching element 106 is configured to generate a signal to control the first switching element 103.
  • Q2 a second switching element 106
  • Fig. 2 is a diagram which shows a waveform example without capacitance controlling in accordance with an embodiment of the present disclosure.
  • C4, Q1 and controller 104 in the Fig. 1 are not used.
  • a waveform of zero crossing shown as 201 need to be improved.
  • Fig. 3 is a diagram which shows a waveform example with capacitance controlling in accordance with an embodiment of the present disclosure.
  • C4, Q1 and controller 104 in the Fig. 1 are used.
  • a waveform of zero crossing shown as 301
  • THD and harmonic can be improved while the cost of the circuit is decreased.
  • the resonant circuit (such as an LLC circuit) is used to drive a light emitting diode (LED) as an output load.
  • the resonant circuit (such as an LLC circuit) also can be used to drive other output loads.
  • a first switching element and a controller are provided and a capacitance value of the first capacitor is changed by a switching operation of the first switching element. Therefore, THD and harmonic can be improved while the cost of the circuit is decreased.
  • a method of trolling charge pump is provided in the embodiments.
  • the corresponding device 100 are illustrated in the first aspect of embodiments, and the same contents as those in the first aspect of embodiments are omitted.
  • Fig. 4 is a diagram which shows a method of controlling charge pump in accordance with an embodiment of the present disclosure. For example, the method is executed by the controller 104. As shown in Fig. 4, a method 400 includes:
  • Fig. 4 is only an example of the disclosure, but it is not limited thereto.
  • the order of operations at blocks or steps may be adjusted, and/or, some blocks or steps may be omitted.
  • some blocks or steps not shown in Fig. 4 may be added.
  • the method further includes: adjusting the pulse width modulation signal to improve a power factor or a total harmonic distortion or a harmonic of the resonant circuit.
  • the method further includes: modifying a charge pump cap value of the charge pump circuit in a power frequency cycle. For example, the charge pump cap value of the charge pump circuit is modified along with the changed capacitance value of the first capacitor which is controlled by the pulse width modulation signal.
  • Fig. 5 is another diagram which shows a method of controlling charge pump in accordance with an embodiment of the present disclosure. For example, the method is executed by the controller 104. As shown in Fig. 5, a method 500 includes:
  • the method 500 includes:
  • Fig. 5 is only an example of the disclosure, but it is not limited thereto.
  • the order of operations at blocks or steps may be adjusted, and/or, some blocks or steps may be omitted.
  • some blocks or steps not shown in Fig. 5 may be added.
  • a first switching element and a controller are provided and a capacitance value of the first capacitor is changed by a switching operation of the first switching element. Therefore, THD and harmonic can be improved while the cost of the circuit is decreased.
  • a power driver is provided in the embodiments.
  • the corresponding device 100 and method 500 are illustrated in the first and second aspects of embodiments, and the same contents as those in the first and second aspects of embodiments are omitted.
  • Fig. 6 is a diagram which shows a power driver in accordance with an embodiment of the present disclosure.
  • a power driver 600 includes: a charge pump circuit 601 connected to an input circuit 6011 and an output circuit 6012; a resonant circuit 602 coupled to the charge pump circuit 601; a switching element 603 connected to a capacitor C4 of the resonant circuit 602; wherein a capacitance value of the capacitor C4 is changed by a switching operation of the switching element 603.
  • the power driver 600 further includes: a controller 604 configured to read an input current and/or an input voltage from the input circuit 6011, generate a pulse width modulation signal according to the input current and/or the input voltage, and output the pulse width modulation signal to control the switching element 603.
  • a controller 604 configured to read an input current and/or an input voltage from the input circuit 6011, generate a pulse width modulation signal according to the input current and/or the input voltage, and output the pulse width modulation signal to control the switching element 603.
  • the power driver 600 may be used to drive a light emitting diode (LED) .
  • the power driver 600 is comprised in a light emitting diode (LED) driver, for example, the power driver 600 is a part of a LED driver.
  • a first switching element and a controller are provided and a capacitance value of the first capacitor is changed by a switching operation of the first switching element. Therefore, THD and harmonic can be improved while the cost of the circuit is decreased.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

La présente invention concerne un dispositif et un procédé de commande d'une pompe de charge. Le dispositif de commande de pompe de charge comprend : un circuit de pompe de charge connecté à un circuit d'entrée ; un premier condensateur couplé au circuit de pompe de charge et disposé en tant qu'élément d'un circuit résonant ; un premier élément de commutation connecté au premier condensateur ; et un dispositif de commande conçu pour lire un courant d'entrée et/ou une tension d'entrée en provenance du circuit d'entrée, pour générer un signal de modulation de largeur d'impulsion en fonction du courant d'entrée et/ou de la tension d'entrée, et pour délivrer en sortie le signal de modulation de largeur d'impulsion pour commander le premier élément de commutation. Par Conséquent, le THD et l'harmonique peuvent être améliorés tandis que le coût du circuit est diminué.
PCT/CN2020/093202 2020-05-29 2020-05-29 Dispositif et procédé de commande de pompe de charge Ceased WO2021237658A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20937569.0A EP4133585A4 (fr) 2020-05-29 2020-05-29 Dispositif et procédé de commande de pompe de charge
PCT/CN2020/093202 WO2021237658A1 (fr) 2020-05-29 2020-05-29 Dispositif et procédé de commande de pompe de charge
CN202080100221.XA CN115461974B (zh) 2020-05-29 控制电荷泵的设备和方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/093202 WO2021237658A1 (fr) 2020-05-29 2020-05-29 Dispositif et procédé de commande de pompe de charge

Publications (1)

Publication Number Publication Date
WO2021237658A1 true WO2021237658A1 (fr) 2021-12-02

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PCT/CN2020/093202 Ceased WO2021237658A1 (fr) 2020-05-29 2020-05-29 Dispositif et procédé de commande de pompe de charge

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EP (1) EP4133585A4 (fr)
WO (1) WO2021237658A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6366027B1 (en) 1999-11-19 2002-04-02 U.S. Philips Corporation Circuit device for operating a discharge lamp by means of a high-frequency current
US20090128057A1 (en) 2007-09-15 2009-05-21 Frank Alexander Valdez Fluorescent lamp and ballast with balanced energy recovery pump
WO2013113836A1 (fr) 2012-02-03 2013-08-08 Tridonic Gmbh & Co Kg Ballast de lampe comportant pompe à commutation de charge dotée d'une protection contre les surcharges
CN104968075A (zh) * 2015-06-11 2015-10-07 广东科谷电源有限公司 单级高功率因数的led驱动电源
CN207219095U (zh) * 2017-07-31 2018-04-10 昂宝电子（上海）有限公司 Led驱动电路
WO2018137240A1 (fr) 2017-01-26 2018-08-02 Redisem Ltd. Circuit convertisseur de puissance
WO2018166501A1 (fr) * 2017-03-16 2018-09-20 Tridonic Gmbh & Co Kg Pilote avec circuit de pompe de charge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3726611B2 (ja) * 2000-01-17 2005-12-14 松下電器産業株式会社 空気調和機の電源回路
GB2594659B (en) * 2018-12-28 2023-02-08 Tridonic Gmbh & Co Kg Power supply circuit
CN110808681B (zh) * 2019-11-13 2021-06-29 杭州优特电源有限公司 一种无源pfc谐振变换器及其控制方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6366027B1 (en) 1999-11-19 2002-04-02 U.S. Philips Corporation Circuit device for operating a discharge lamp by means of a high-frequency current
US20090128057A1 (en) 2007-09-15 2009-05-21 Frank Alexander Valdez Fluorescent lamp and ballast with balanced energy recovery pump
WO2013113836A1 (fr) 2012-02-03 2013-08-08 Tridonic Gmbh & Co Kg Ballast de lampe comportant pompe à commutation de charge dotée d'une protection contre les surcharges
CN104968075A (zh) * 2015-06-11 2015-10-07 广东科谷电源有限公司 单级高功率因数的led驱动电源
WO2018137240A1 (fr) 2017-01-26 2018-08-02 Redisem Ltd. Circuit convertisseur de puissance
WO2018166501A1 (fr) * 2017-03-16 2018-09-20 Tridonic Gmbh & Co Kg Pilote avec circuit de pompe de charge
CN207219095U (zh) * 2017-07-31 2018-04-10 昂宝电子（上海）有限公司 Led驱动电路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4133585A4

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Publication number Publication date
EP4133585A4 (fr) 2023-05-31
CN115461974A (zh) 2022-12-09
EP4133585A1 (fr) 2023-02-15

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