CN102177766A - Driver circuit for a semiconductor light source (led) - Google Patents
Driver circuit for a semiconductor light source (led) Download PDFInfo
- Publication number
- CN102177766A CN102177766A CN2009801397788A CN200980139778A CN102177766A CN 102177766 A CN102177766 A CN 102177766A CN 2009801397788 A CN2009801397788 A CN 2009801397788A CN 200980139778 A CN200980139778 A CN 200980139778A CN 102177766 A CN102177766 A CN 102177766A
- Authority
- CN
- China
- Prior art keywords
- drive circuit
- led
- switching regulaor
- voltage
- power
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/401—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37036—Position normally, stop, measure position tool with second independent sensor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37559—Camera, vision of tool, compute tool center, detect tool wear
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Dc-Dc Converters (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Rectifiers (AREA)
Abstract
The invention relates to a halogen replacement lamp (1) comprising a driver circuit (2) for a semiconductor light source (LED). The driver circuit (2) in turn comprises a switching controller (3) to which a power factor controller (PFC) is connected upstream. The power factor controller (PFC) is dimensioned such that the driver circuit (2) having a connected semiconductor light source (LED) appears as an ohmic load for a low voltage source (5) connected upstream.
Description
Technical field
The present invention relates to be used for drive circuit semiconductor light sources, that comprise switching regulaor, this switching regulaor has:
A) diode,
B) inductance,
C) pulse switch and
D) be used for the control circuit portion of pulse switch.
Background technology
From having known LED, people make great efforts to replace used till that time halogen light-emitting device with it.LED has two significant advantage with respect to the halogen light-emitting device, that is, the life-span is long and power consumption is less.
EP1147686B1 discloses the drive circuit that is used for the semiconductor light sources that semiconductor light sources especially is made of LED, and this drive circuit comprises the switching regulaor that is inaccessible current transformer form.The task of the drive circuit that this is known is to avoid common and complex structure so far.
Also cicada comprises that other halogen of LED substitutes lighting device, and it comprises step-down converter (Buck converter) as switching regulaor.
In order to make the known halogen that comprises LED substitute lighting device work, must supply for example low volt alternating voltage of 12V.The electronic transformer by the AC network power supply is adopted in suggestion for this reason.Yet especially step-down converter is capacitive load because of needed auxiliary capacitor for electronic transformer, and this may cause, and this electronic transformer is instantaneous to draw high electric current from electrical network.Because most electronic transformer does not design at capacitive load, so this causes the uncontrollable High-frequency Interference in electrical network.
Summary of the invention
From above-mentioned drive circuit, the present invention is based on following task, design driven circuit like this, thus avoided last described shortcoming.
According to the present invention, so finish this task, before switching regulaor, be provided with a power-factor regulator (PFC), perhaps an integrated power-factor regulator (PFC) in this switching regulaor.At this moment, the specification of power-factor regulator (PFC) is set to, and this drive circuit shows as ohm load with the semiconductor light sources that links to each other for preposition voltage power supply device (especially low-voltage source or grid ac voltage).
Power-factor regulator is known and for example describes to some extent in GB1352464B1 and US6469917B1.Power-factor regulator is made of bridge rectifier and the switching regulaor that is booster converter (booster converter) form that is connected on the bridge rectifier back usually.The pulse switch of booster converter is so controlled usually, that is, the power-factor regulator of preposition alternating-current voltage source obtains the high frequency input current, and its envelope constitutes the half-sine wave of 100Hz.Thus one, the mean value of input current also is the semisinusoidal waveform and has the frequency of 100Hz.Such input current only causes little high order harmonic component, has therefore satisfied the required standard that limits uncontrollable interference.
Utilization can be substituted light-emitting device for the halogen that comprises LED by the electronic transformer that is connected to the alternating voltage net and supply needed 12V alternating voltage according to drive circuit of the present invention.
This switching regulaor can be selected from:
-SEPIC
-uninsulated inaccessible current transformer,
-inverse excitation type converter (inaccessible current transformer) with potential isolation,
-step-down converter, perhaps
-booster converter.
This switching regulaor can be worked according to critical conduction mode (boundary scheme).
This switching regulaor can be according to intermittent mode (intermittently conduction mode) work.
Another improvement project may be, is provided with an electronic transformer that will be connected to AC network in the front of switching regulaor, reduces line voltage by electronic transformer, constitutes low-voltage source up to it for this drive circuit.
The pulse frequency that is used for the pulse switch of power-factor regulator (PFC) should be 50KHz or 60KHz as far as possible, thereby can be formed for the above-mentioned half-sine wave of input current.
Another improvement project may be that this drive circuit is positioned in the lamp socket that is used for this LED with a LED or a plurality of LED.
The invention still further relates to halogen and substitute light-emitting device, it is characterized in that having semiconductor light sources and the semiconductor light sources that especially constitutes by one or more LED and the drive circuit of type described above.
Description of drawings
Below with reference to accompanying drawing embodiments of the invention are described, wherein:
Fig. 1 represents to comprise that the halogen of first execution mode of drive circuit substitutes first execution mode of light-emitting device; And
Fig. 2 represents to comprise that the halogen of second execution mode of corresponding driving circuit substitutes second execution mode of light-emitting device.
Embodiment
Fig. 1 shows halogen and substitutes light-emitting device 1, and its luminous element for example is a LED, or comprises the LED assembly of a plurality of LED.Before LED, be equipped with drive circuit 2.This drive circuit comprises the switching regulaor 3 that is step-down converter (Buck converter) form.Active (chopping) power-factor regulator 4 is set in the front of this step-down converter, and this power-factor regulator 4 is by producing corresponding direct voltage in the 12V low-voltage of supplying with it, these direct voltage drive switching regulaor 3 work.
Active PFC is a converter, and it charges to electric capacity usually and has by an inductance and a series circuit that diode constituted and the switch (FET) by control circuit (preferably integrated circuit, for example ASIC) chopping.
The low volt of described 12V alternating voltage is produced by electronic transformer 5, and this electronic transformer 5 is connected on the AC network itself.If there is not power-factor regulator (PFC) 4, the step-down converter (Buck converter) that then constitutes switching regulaor 3 will constitute the capacitive load of electronic transformer 5, and this may cause, and this electronic transformer 5 is instantaneous to draw high electric current from electrical network.Thus one, in electrical network, this is unallowed to High-frequency Interference with spuious.Power-factor regulator (PFC) 4 has prevented this phenomenon and has been used to make the mean value of the input current of drive circuit 2 is the semisinusoidal waveform with frequency 100Hz.Thus one, avoid spuious to higher Harmonics in Electric Power Network as far as possible.
Fig. 2 shows the drive circuit 2 that halogen substitutes lighting device 1 slightly particularly.As light source, a plurality of LED are set at this.Drive circuit 2 again as in Fig. 1 by the low volt alternating voltage driving work of electronic transformer 5 with 12V.
Low volt alternating voltage is by rectifier 6 rectifications.For fear of interference, before rectifier 6, also be connected to high frequency filter 7.Alternating voltage through rectifier 6 rectifications passes through capacitor C1 by copped wave, to eliminate radio interference.In other words, the direct voltage that pulse on capacitor C1, occurs.This direct voltage is supplied to switching regulaor 3.Switching regulaor 3 is made up of inverter (be also referred to as and fall-booster converter or inaccessible current transformer) in the case.It is included in the tandem tap S in vertical branch road, also is included in the inductance L in first transverse legs, and the diode D that joins with it in vertical branch road is included in the second capacitor C2 that is used for copped wave in second transverse legs at last.Here, characteristics so are integrated in the switching regulaor 3 in particular for the power-factor regulator (PFC) 4 of avoiding spuious High-frequency Interference in electrical network, that is, pulse switch S is common to inverter and power-factor regulator (PFC) 4.
PFC4 has the PFC adjuster 4a that for example is the IC form, wherein this PFC adjuster 4a can be supplied to feedback signal (input voltage for example, current over-zero when switch disconnects, the output voltage of PFC), and PFC adjuster 4a is identified for the switching information of switch S thus.
This switch is driven work with the pulse frequency of 50kHz or 60kHz.
The drive circuit that comprises switching regulaor 32 that is used for the alternative light-emitting device 1 of halogen can so constitute, and promptly can be directly connected on the AC network.For its work, drive circuit 2 must be designed to have higher withstand voltage properties.In the case, the user can select whether halogen will to be substituted the substitute that light-emitting device 1 be connected to electronic transformer 5 or substitute light-emitting device as high volt halogen and be directly connected to AC network.
The switch of the switch of PFC and Buck converter is controlled by control circuit.This control circuit can be supplied to measuring-signal different, that be used for beatization, for example the output voltage of the change curve of electrical network supply voltage or zero passage, PFC, flow through the electric current etc. of the inductance of PFC.
As switching regulaor 3, for example can adopt inaccessible current transformer, inverse excitation type converter (inaccessible current transformer), step-down converter or the booster converter of non-isolation with potential isolation according to discontinuous current mode.
In inverse excitation type converter (have the inaccessible current transformer of potential isolation, promptly pass through transformer isolation), inductance (L) is the elementary winding of transformer.
Switching regulaor 3 can be according to critical conduction mode work (the critical work between discontinuous current mode and non-discontinuous current mode).On the one hand, preferably measure output voltage or LED electric current and do adjusting in view of the above, will monitor also inductance L is in which moment quilt demagnetizationization.In case find inductance L by demagnetization, then pulse switch S is switched on.Pulse switch S can open again when reaching predetermined current value by pulse switch S, or opens again according to regulating parameter (for example depending on the regulating loop that is used for output voltage or LED electric current).The measurement of this input voltage can additionally take place.
As the switching regulaor 3 of the critical work between discontinuous current mode and non-discontinuous current mode, for example can use inaccessible current transformer, inverse excitation type converter (inaccessible current transformer), step-down converter or the booster converter of non-isolation with potential isolation.
In addition, when switching regulaor 3 is worked according to critical conduction mode, this switching regulaor can also have other a plurality of inductance and/or electric capacity, they utilize the resonance behavior with other the existing inductance and/or the electric capacity of switching regulaor under the pulse frequency of pulse switch S, and therefore reduce switching loss.
In inverse excitation type converter (have the inaccessible current transformer of potential isolation, promptly pass through transformer isolation), inductance (L) is the elementary winding of transformer.
In a simple flexible program, capacitor C2 can have only very little electric capacity, or even is saved fully.Thus one, drive circuit 2 shows as ohm load with plain mode together with the semiconductor light sources (LED) that links to each other for preposition voltage power supply device.
The adjusting of LED electric current also can be carried out in conjunction with the output voltage of LED voltage of being grasped or switching regulaor 3.LED voltage can for example realize by the difference measurement that, two voltages in the output loop are measured here this moment, and its difference shows LED voltage (for example output voltage of switching regulaor 3 and the voltage under the LED).
Design driven circuit 2 like this, this drive circuit not only is connected to low-voltage source 5 or grid ac voltage, and can be by its driving work.
The drive circuit 2 of belt switch adjuster 3 can be arranged on the printed circuit board.
Can so constitute halogen and substitute light-emitting device 1, it comprises radiator, heat conduction shell and/or heat conduction lamp socket.
Printed circuit board with drive circuit 2 of belt switch adjuster 3 can heat be couple on radiator, heat conduction shell and/or the heat conduction lamp socket.
Can so constitute halogen and substitute light-emitting device 1, the parts in all are included in are integrated in the common lamp socket that has a vial.
Can adopt for example for example E14 or E27 of B15d, BA15, GU10, GZ10, GU24 or thread lamp socket of bayonet cap.
Claims (10)
1. drive circuit (2) that is used for semiconductor light sources (LED), this drive circuit (2) comprises switching regulaor (3), this switching regulaor (3) has:
A) diode (D),
B) inductance (L),
C) pulse switch (S) and
D) be used for the control circuit portion of pulse switch (S),
It is characterized in that, be equipped with power-factor regulator (4) in the front of this switching regulaor (3), perhaps in this switching regulaor (3), be integrated with power-factor regulator (4), wherein this power-factor regulator (4) is designed to, described drive circuit (2) shows as ohm load together with the semiconductor light sources (LED) that links to each other for preposition voltage power supply device, this voltage power supply device is low-voltage source (5) or grid ac voltage especially.
2. drive circuit according to claim 1 (2) is characterized in that, described switching regulaor (3) is selected from:
-SEPIC；
The inaccessible current transformer that-non-isolates;
-inverse excitation type converter (inaccessible current transformer) with potential isolation;
-step-down converter; Perhaps
-booster converter.
3. drive circuit according to claim 2, wherein, described switching regulaor (3) is worked with critical conduction mode (boundary scheme).
4. drive circuit according to claim 2, wherein, described switching regulaor (3) is with intermittent mode (intermittently conduction mode) work.
5. according to each described drive circuit (2) in the claim 1 to 4, it is characterized in that, described power-factor regulator (PFC) is integrated in the described switching regulaor (3), wherein, described pulse switch (S) is common to described power-factor regulator (PFC) and described switching regulaor (3).
6. according to each described drive circuit (2) in the claim 1 to 5, it is characterized in that, be provided with the electronic transformer (5) that will link to each other with AC network in described switching regulaor (3) front, reduce line voltage by this electronic transformer (5), constitute the low-voltage source of described drive circuit (2) up to this electronic transformer.
7. according to each described drive circuit (2) in the claim 1 to 6, it is characterized in that the pulse frequency that is used for the pulse switch (S) of described power-factor regulator (PFC) is higher than 50KHz.
8. according to each described drive circuit (2) in the claim 1 to 7, it is characterized in that described drive circuit is installed in the lamp socket that is used for this LED with LED.
9. operating means that is used for light-emitting device, this operating means has according to each described drive circuit in the claim 1 to 8, and this light-emitting device is LED especially.
10. a halogen substitutes luminous element (1), it is characterized in that, this halogen substitutes that luminous element (1) has semiconductor light sources (LED) and according to each described drive circuit (2) in the claim 1 to 8.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202008013397U DE202008013397U1 (en) | 2008-10-09 | 2008-10-09 | Driver circuit for a semiconductor light source (LED) |
| DE202008013397.1 | 2008-10-09 | ||
| PCT/EP2009/007264 WO2010040542A1 (en) | 2008-10-09 | 2009-10-09 | Driver circuit for a semiconductor light source (led) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102177766A true CN102177766A (en) | 2011-09-07 |
| CN102177766B CN102177766B (en) | 2014-02-26 |
Family
ID=42055434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980139778.8A Expired - Fee Related CN102177766B (en) | 2008-10-09 | 2009-10-09 | Driver circuit for a semiconductor light source (led) |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102177766B (en) |
| DE (2) | DE202008013397U1 (en) |
| WO (1) | WO2010040542A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104919897A (en) * | 2012-12-21 | 2015-09-16 | 赤多尼科两合股份有限公司 | Radio transmission between modules in a potential-separated led converter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI505748B (en) * | 2013-06-18 | 2015-10-21 | Univ Ishou | Light emitting diode driving circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL39348A (en) | 1971-06-25 | 1977-06-30 | Stauffer Chemical Co | N-t-butyl-alpha-(3,5-disubstituted phenoxy)butyramides and their use as herbicides |
| US5661645A (en) * | 1996-06-27 | 1997-08-26 | Hochstein; Peter A. | Power supply for light emitting diode array |
| CA2343062A1 (en) | 1999-07-07 | 2001-01-18 | Koninklijke Philips Electronics N.V. | Flyback converter as led driver |
| US6469917B1 (en) | 2001-08-16 | 2002-10-22 | Green Power Technologies Ltd. | PFC apparatus for a converter operating in the borderline conduction mode |
| US7378805B2 (en) * | 2005-03-22 | 2008-05-27 | Fairchild Semiconductor Corporation | Single-stage digital power converter for driving LEDs |
| EP1984667B1 (en) * | 2006-02-10 | 2017-08-23 | Philips Lighting North America Corporation | Methods and apparatus for high power factor controlled power delivery using a single switching stage per load |
-
2008
- 2008-10-09 DE DE202008013397U patent/DE202008013397U1/en not_active Expired - Lifetime
-
2009
- 2009-10-09 WO PCT/EP2009/007264 patent/WO2010040542A1/en active Application Filing
- 2009-10-09 DE DE112009002150T patent/DE112009002150A5/en not_active Withdrawn
- 2009-10-09 CN CN200980139778.8A patent/CN102177766B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104919897A (en) * | 2012-12-21 | 2015-09-16 | 赤多尼科两合股份有限公司 | Radio transmission between modules in a potential-separated led converter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112009002150A5 (en) | 2011-09-29 |
| WO2010040542A1 (en) | 2010-04-15 |
| CN102177766B (en) | 2014-02-26 |
| DE202008013397U1 (en) | 2010-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106686798B (en) | For driving the system and equipment of multiple great power LED units | |
| JP5333769B2 (en) | LED lighting device and lighting device | |
| CN102740547B (en) | Lighting device for semiconductor light emitting element and illumination apparatus including same | |
| JP5051861B1 (en) | Straight tube type light emitting diode lighting | |
| CN102474958B (en) | Led turn-on circuit, lamp, and illumination apparatus | |
| EP2658347A1 (en) | Led lighting device using ballast for fluorescent lamp | |
| US20070108916A1 (en) | LED driving circuit and controlling method thereof | |
| Alonso et al. | A study on LED retrofit solutions for low-voltage halogen cycle lamps | |
| CN102067734B (en) | Lamp type detection by means of power factor correction circuit | |
| JP5198405B2 (en) | Power circuit | |
| JP2014517466A (en) | LED retrofit drive circuit and method for operating LED retrofit drive circuit | |
| US8358078B2 (en) | Fluorescent lamp dimmer with multi-function integrated circuit | |
| US9648689B2 (en) | Drive unit for a lighting element and operating method therefor | |
| KR100912133B1 (en) | Dimming-controllable led lamp | |
| CN104885566B (en) | The operation of light-emitting device with resonance converter | |
| CN105517241B (en) | A kind of method and brightness switching device for controlling LED lamp brightness switching | |
| CN102177766B (en) | Driver circuit for a semiconductor light source (led) | |
| CN105637979B (en) | Driving unit and its operating method for illumination component | |
| Pinto et al. | Compact lamp using high-brightness LEDs | |
| JP6186724B2 (en) | LED driving device | |
| KR101370531B1 (en) | a Power Apparatus for Lighting LED | |
| Wang et al. | Design and implementation of a single-stage high-efficacy LED driver with dynamic voltage regulation | |
| CN102428753A (en) | Driver circuit for an led | |
| JP4711148B2 (en) | Discharge lamp lighting device and lighting device | |
| US20230029021A1 (en) | Lighting apparatus driver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20191009 |