WO2013026037A2 - Alimentation électrique régulée en courant à commande de tension dynamique - Google Patents

Alimentation électrique régulée en courant à commande de tension dynamique Download PDF

Info

Publication number
WO2013026037A2
WO2013026037A2 PCT/US2012/051475 US2012051475W WO2013026037A2 WO 2013026037 A2 WO2013026037 A2 WO 2013026037A2 US 2012051475 W US2012051475 W US 2012051475W WO 2013026037 A2 WO2013026037 A2 WO 2013026037A2
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
load
voltage
mosfet
specific integrated
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/US2012/051475
Other languages
English (en)
Other versions
WO2013026037A3 (fr
Inventor
Michael Creighton
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.)
BIAS POWER Inc
Original Assignee
BIAS POWER Inc
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 BIAS POWER Inc filed Critical BIAS POWER Inc
Publication of WO2013026037A2 publication Critical patent/WO2013026037A2/fr
Anticipated expiration legal-status Critical
Publication of WO2013026037A3 publication Critical patent/WO2013026037A3/fr
Ceased legal-status Critical Current

Links

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
    • H02M3/22—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
    • H02M3/33576—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 having at least one active switching element at the secondary 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
    • H02M1/0019—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being load current fluctuations
    • 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
    • H02M1/0045—Converters combining the concepts of switch-mode regulation and linear regulation, e.g. linear pre-regulator to switching converter, linear and switching converter in parallel, same converter or same transistor operating either in linear or switching mode

Definitions

  • This present invention relates to voltage control devices, and more particularly to voltage control devices for providing an acceptable voltage level to electrical devices having varying voltage demand requirements.
  • LED lighting Light Emitting Diode lighting is becoming increasingly desirable as compared to traditional incandescent and/or florescent lighting due to its pleasing light qualities and low energy consumption.
  • LED lighting or the LED components of the LED lighting requires a constant current to function properly. That is. an LED requires a constant current regardless of the the LED * s forward In this regard, it should be noted for most LEDs. the forward voltage will be dependent upon the temperature of the LED. As such, as the ambient temperature of the LED varies, so does the forward voltage required by the LED. But achieving a constant of the LED is achieved maintaining the current at a constant value. Additionally, failing to maintain a constant current to the LED either shortens the life of the LED or reduces the luminosity of the LED.
  • a manufacture of lighting cabinets may design a family of lighting around a specific cabinet style, such as an under-cabinet lighting fixture.
  • the family of cabinets may include one model that includes four LEDs. another model that includes six LEDs and still another model that includes ten LEDs.
  • the family of lighting products could include a multitude of different light fixture designs with each light fixture design having its own desired light output level determined by the number of LEDs that the fixture contains. As such, each of the particular fixture models of the family may require a different number of LEDs with hich the fixture generates the light.
  • I utilize various different power supplies. For example, a light fixture with two LEDs might require a first power supply or driver while a light fixture with four LEDs would require a different power suppl and while a light fixture with eight LEDs will require still yet a different power supply.
  • the typical power suppl (driver) has an effective range of about two to one.
  • a first model LED may work w ell for a fixture having eight LEDs. but would not work well for an LED having, for example, three of four LEDs.
  • the manufacturer would need to employ a different model power supply- to handle the four LED device.
  • the manufacture is forced to stock varying power supplies to accommodate all the models of a particular family of fixtures.
  • the amount of space required for the power supply with which to power the LEDs also varies with different models of power supplies, thereby further complicating the design of families of light fixtures. Further, requiring the use and purchase of different drivers may prevent the manufacturer from realizing cost savings that are achieved by large quantity purchases, since the manufacture is forced to order and purchase her drivers in smaller batches of different drivers rather than purchasing her drivers in larger batches of a common driver.
  • a current-regulated AC-to-DC power supply for loads having different voltage drops includes an AC voltage source, and an AC-to-DC converter coupled to said AC source for producing a controllable DC voltage.
  • a current regulating circuit receives the DC voltage and includes a pair of load terminals for connecting the current-regulating circuit to a load. The current-regulating circuit supplies a regulated DC current output to the load connected to said terminals.
  • a voltage-sensing circuit is coupled between the converter and one of the load terminals for dynamically adjusting the DC voltage according to the voltage drop across the load.
  • the current-regulating circuit includes a transistor connected to the same load terminal as the voltage-sensing circuit provides a controllable impedance in series with the load connected to the load terminals for regulating the DC current supplied to the load.
  • the voltage-sensing circuit senses the voltage across the transistor.
  • one innovative aspect of the subject matter described in this specification can be embodied in devices that include the capability of recharging batteries, performing electro-chemical plating such as silver plating, chrome plating, or nickel plating, and encouraging salts and metal deposits upon conductive frames such as used to create surfaces from wire meshes immersed in sea water.
  • inventions of the technical material described in this application include corresponding systems and apparatus configured to include 4 circuits and a load; the first circuit being a pulse-by-pulse current control circuit and comprising at least one application specific integrated circuit configured to switch a first MOSFET on and off: the second circuit configured to signal the at least one application specific integrated circuit causing the first circuit to maintain an constant output voltage: the third circuit configured to provide a voltage reference: and the fourth circuit serving to provide feedback to the second circuit and the feedback based at least in part on a current flow in a second MOSFET.
  • the load can be a rechargeable batters, a collection of LEDs connected in series, a metal salt bath configured in a container to enable the plating of a metal onto the conductive surface of an item immersed w ithin the salt bath, and the like.
  • the second circuit can be configured to signal the at least one application specific integrated circuit upon detecting a threshold level of voltage at a cathode of a diode.
  • the third circuit can comprise a second MOSFET. an amplifier, and an application specific integrated circuit.
  • the third circuit can have a resister that serves as a proxy for the load, enabling a reference voltage to be measured across the resister. Further.
  • the s ⁇ stems and apparatus can contain a dimming circuit capable of prompting a decrease in a current applied to the load.
  • the dimming circuit is part of the fourth circuit and interacts to with the third and second circuits.
  • Implementations of the subject matter described can help a manufacture reduce the complexity of stocking LED light fixture drivers. Further implementations of the subject matter described can help a manufacture reduce the complexity in designing a family of light fixtures by standardizing the amount of space in the fixture that must be allocated to the driver. Also, implementations of the subject matter described can help a manufacture reduce costs associated with a family of light fixtures by enabling the manufacture to order larger batches of a common driver rather than multiple and smaller batches of differing drivers.
  • FIG. 1 is a logical representation of an adaptive voltage output control and diinmable circuit.
  • FIG.2 is a schematic of an example implementation of the first two control loops of an adaptive voltage output control and dimmable circuit.
  • FIG.3 is a schematic of an example implementation of the third and fourth control loops of an adaptive voltage output control and dimmable circuit.
  • FIG. I is a logical representation 100 of an adaptive voltage output control (AVOC) and dimmable circuit I 10.
  • the AVOC and dimmable circuit 110 can be explained as consisting of four control loops 120. 130. 140. and 150.
  • the control loop 120 is a pulse-b) -pulse current control circuit comprising an Application Specific Integrated Circuit (ASIC) 112. a Metal-Oxide Semiconductor Field-Effect Transistor (MOSFET) 114. a capacitor 116. and a resistor 118.
  • ASIC 112 has inputs of TA 122. AC 124. AC 126. VCC 128. GD 132. CS 134. and Gnd 136.
  • the pulse-by-pulse current control is provided by the ASIC 112.
  • the ASIC 112 can be designed to operate at a variety of switching frequencies. For example. ASIC 112 can be designed to operate the MOSFET 114 at a nominal switching frequency of 100kHz. As designed, the switching of the MOSFET 114 will continue until either the continues until either the TA 122 is pulled high or a predetermined number of sw itching pulses have been completed. In one implementation, the TA 122 line can be pulled high by the action of an optcoupler 142. Note that the cycle will repeat every half-cycle of the Alternating Current supplied by lines 144 and 146.
  • the control loop 130 comprises a zener diode 148. a diode I 52. and the optocoupler 142.
  • the control loop 130 monitors the output voltage of the converter at the cathode of diode 152 and through the optocoupler 1 2. prov ides a signal to the ASIC 112.
  • the ASIC 112 interprets the supplied signal as a shutdown command of gate pulses from the ASIC 112 w hen the output voltage of the converter is at the designed predetermined level.
  • the control loop 130 works to set a constant output voltage of the AC to DC converter portion of the circuit.
  • the ASIC 112 w orks to switch on and off the MOSFET 114 as long as the zener diode 148 does not conduct current.
  • the optocoupler 1 2 Upon conducting current, the optocoupler 1 2 then fires off pulling the TA 122 line high, turning the ASIC 112 off (stops the switching on and off of the MOSFET 114 by ASIC 112).
  • the control loop 140 comprises a MOSFET 154. an amplifier 156. an ASIC 162. and resistors 158. 168.170.
  • the ASIC 162 functions to pro ide a precision reference and supplies a set point voltage for the amplifier 156.
  • This loop functions to provide a constant current through the load 164 (portrayed as a string of LEDs). Note, while the load is portrayed as a sting of LEDs. the load can be any device or series of devices that require a constant load. For example, the load 164 could be a battery charger.
  • the resistors 168 and 170 divide the voltage across them, proportionally to their respective resistance, enabling an accurate setting of the voltage applied to the amplifier 156.
  • the voltage across resister 158. serving as a proxy for the load 164. modifies the error amplifier 156. enabling the MOSFET 154 to be driven at the desired level.
  • the control loop 150 comprises a zener diode 166. the optocoupler 142. a resistor
  • the control loop 150 provides dynamic voltage control (DVC ) to maintain voltages at predetermined level under a w ide range of values for the load 164.
  • DVC dynamic voltage control
  • w hen the voltage at the drain of the MOSFET 154 rises above the level set by the voltage characteristic of the zener diode 166. caused by maintaining a constant current through the load 164. the zener diode 166 conducts current.
  • the current the magnitude of which set by the resistor 168. causes the optocoupler 142 to turn on. This in turn causes the TA 132 line to raise to VCC. limiting the output voltage of the converter to a level such that current through the load 164 is limited to approximately 350 mA and that the voltage drop across the transistor 142 and the resistor 158 is at a predetermined value.
  • control loop 150 generally works as follows: the circuitry to the gate of the MOSFET 1 4 varies or controls the voltage across the MOSFET 154. By varying the voltage across the MOSFTET 1 4. the difference from the constant voltage from the drive from the input, as supplied control loop 140. minus the voltage across the MOSFET 1 4 is the voltage across the load 164. The voltage across the load 164 determines the current through the load 164. By measuring the current through the load 164. the drive current of the MOSFET 154 can be altered accordingly, so that a constant current can be maintained through the load 164.
  • the circuit 110 in response to the increase in voltage across the MOSFET 154 varies the AC to DC converter (control loops 120 and 130) via control loop 150 to keep the voltage across the MOSFET 154 constant. In this way. the circuit 110 can be made to function like a dimmer and enable the diming of LEDs (the load 164). Alternative! ⁇ '.
  • zener diode 166 serves the same purpose as zener diode 148 and w hen the zener diode 166 conducts current, the optocoupler 142 then fires off pulling the TA 122 line high, and turning the ASIC 112 off (stops the sw itching on and off of the MOSFET 114 by ASIC 112).
  • FIG.2 is a schematic 200 of an exemplar implementation of the first two control loops of an adaptive voltage output control and dimmable circuit 110.
  • FIG.2 is a more complete representation of the first control loop 120 and the second control loop 130 of the adaptive voltage output control (AVOC) and dimmable circuit 110 than is portrayed in the logical representation presented in FIG.1.
  • the control loop 120 is a is a pulse-by-pulse current control circuit comprising an ASIC 212. a OSFET 214. a capacitor 216. and a resistor 218.
  • the ASIC 212 has inputs of ' FA 122. AC 124. AC 126. VCC 128. GD 132. CS 134. and Gnd 136.
  • control loop 130 comprises a zener diode 148. a diode 152. and the optocoupler 142.
  • FIG.3 is a schematic 300 of an example implementation of the third and fourth control loops of an adaptive voltage output control and dimmable circuit 110.
  • FIG.3 is a more complete representation of the control loop 140 and the control loop 150 of the adaptive voltage output control (AVOC) and dimmable circuit 110 than is portrayed in the logical representation presented in FIG.1.
  • the control loop 140 comprises a MOSFET 154. an amplifier 156. an ASIC 162. and resistors 158. 168, 170.
  • control loop 150 comprises a zener diode 166. the optocoupler 142. a resistor 168. and the MOSFET 154.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Dc-Dc Converters (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention porte sur des systèmes et un appareil pour commande de sortie de tension adaptative. Selon un aspect, un système comprend quatre circuits, le premier circuit étant un circuit de commande de courant impulsé par impulsion, le deuxième circuit étant configuré pour signaler le premier circuit permettant au premier circuit de maintenir une tension de sortie constante, un troisième circuit fournissant une référence de tension, et un quatrième circuit fournissant une rétroaction au deuxième circuit, de telle sorte que le système en entier maintient une sortie de tension et de courant constante en dépit de changements de la charge.
PCT/US2012/051475 2011-08-17 2012-08-17 Alimentation électrique régulée en courant à commande de tension dynamique Ceased WO2013026037A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161524375P 2011-08-17 2011-08-17
US61/524,375 2011-08-17

Publications (2)

Publication Number Publication Date
WO2013026037A2 true WO2013026037A2 (fr) 2013-02-21
WO2013026037A3 WO2013026037A3 (fr) 2014-05-15

Family

ID=47715719

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/051475 Ceased WO2013026037A2 (fr) 2011-08-17 2012-08-17 Alimentation électrique régulée en courant à commande de tension dynamique

Country Status (1)

Country Link
WO (1) WO2013026037A2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69724917T2 (de) * 1996-06-21 2004-07-22 Koninklijke Philips Electronics N.V. Stromversorgungssystem für gerät mit wiederaufladbaren batterien
WO2006046207A1 (fr) * 2004-10-27 2006-05-04 Koninklijke Philips Electronics, N.V. Suppression des scintillements lors de la mise en route d'une alimentation a del a intensite reglable
US20090187925A1 (en) * 2008-01-17 2009-07-23 Delta Electronic Inc. Driver that efficiently regulates current in a plurality of LED strings
US8614595B2 (en) * 2008-11-14 2013-12-24 Beniamin Acatrinei Low cost ultra versatile mixed signal controller circuit
CN101605413B (zh) * 2009-07-06 2012-07-04 英飞特电子（杭州）有限公司 适用于可控硅调光的led驱动电路
TWI407833B (zh) * 2009-07-15 2013-09-01 Richtek Technology Corp 驅動電路與驅動負載的方法

Also Published As

Publication number Publication date
WO2013026037A3 (fr) 2014-05-15

Similar Documents

Publication Publication Date Title
US9392654B2 (en) Method and apparatus for controlling a power adjustment to a lighting device
JP5289471B2 (ja) 光源点灯装置及び照明装置
US9101010B2 (en) High-efficiency lighting devices having dimmer and/or load condition measurement
CN102752907B (zh) 点亮设备和照明装置
US8941313B2 (en) Light emitting unit driving circuit and light emitting device
KR20120067360A (ko) 조명 장치
CN105325061B (zh) Led照明装置及其控制电路
KR102286767B1 (ko) 발광 다이오드 조명 장치의 제어 회로
CN105340367A (zh) Led照明装置及其控制电路
JP5425124B2 (ja) 電源装置及び照明装置
US9485820B2 (en) Lighting device and lighting fixture
JP2012089827A (ja) Ｌｅｄ駆動回路
JP6072776B2 (ja) Ｌｅｄレトロフィット駆動回路及びｌｅｄレトロフィット駆動回路を動作させる方法
CN107950079B (zh) 调光装置
TW201701725A (zh) 光源驅動電路
KR101536108B1 (ko) 발광 다이오드 조명 장치의 제어 회로 및 전압 생성 방법
US9743479B2 (en) LED lighting apparatus with improved flicker index
KR20160060350A (ko) 조명 장치
CN111972048A (zh) 照明系统的电压互感器
JP7256384B2 (ja) 電源装置、半導体集積回路及びリップル抑制方法
KR20160047175A (ko) 조명 장치의 구동 회로
KR101267957B1 (ko) Ｌｅｄ조명 제어장치
CN102821507A (zh) 照明装置及其方法
KR101488682B1 (ko) Led 조명의 디밍 제어 회로
JP5944672B2 (ja) Ｌｅｄ点灯装置、それを備えた照明器具、及び照明装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12824016

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 12824016

Country of ref document: EP

Kind code of ref document: A2