CN203482455U - Light modulation circuit and lighting device comprising same - Google Patents
Light modulation circuit and lighting device comprising same Download PDFInfo
- Publication number
- CN203482455U CN203482455U CN201320512951.8U CN201320512951U CN203482455U CN 203482455 U CN203482455 U CN 203482455U CN 201320512951 U CN201320512951 U CN 201320512951U CN 203482455 U CN203482455 U CN 203482455U
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- resistance
- light adjusting
- transistor
- main control
- adjusting circuit
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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]
- H05B45/10—Controlling the intensity of the light
-
- 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]
- H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output
-
- 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]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a light modulation circuit and a lighting device comprising the same; the light modulation circuit comprises a main control module used for controlling light modulation, and a primary conversion module and an ancillary coil module respectively connected with the main control module; the main control module is arranged in a primary side of the light modulation circuit; the light modulation circuit also comprises a primary current adjusting module connected with the main control module and used for providing a first signal capable of adjusting primary side current of the light modulation circuit for the main control module; the light modulation circuit also comprises a voltage protection module connected with the main control module and used for providing a second signal capable of limiting a maximum output power rate of the light modulation circuit for the main control module. The light modulation circuit and the lighting device comprising the same can effectively adjust and set the primary side control current without needing a secondary side feedback circuit.
Description
Technical field
The utility model relates to a kind of light adjusting circuit and comprises the lighting device of this light adjusting circuit.
Background technology
LED lighting technology because have that illumination intensity is high, long service life and the advantage such as energy-efficient and be widely used, not only can be applicable to indoor environment, shop for example, also can be applicable to outdoor, curbside for example.In the lighting device that uses LED lighting technology, often adopted phase-cut dimming technology, user can require to carry out the adjusting of the output current of lighting device in order further to regulate lighting device, in order to meet user's demand, need in the lighting device with phase-cut dimming function, realize current settings.In addition, in order to realize the output current of setting lighting device, need to use bidirectional triode thyristor controller as master controller in the situation that the power output of maintenance primary side is constant, carry out adjusting and the setting of the primary side electric current of lighting device.
Utility model content
In order to solve above-mentioned technical problem, the utility model proposes a kind of novel light adjusting circuit and the lighting device that has used this light adjusting circuit.According to the light adjusting circuit of this scheme, can effectively regulate and set primary side and control electric current, and without the feedback circuit of primary side.Meanwhile, this light adjusting circuit is simple in structure and compact, has the advantages such as with low cost, and in addition, this light adjusting circuit provides a plurality of adjusting terminals, for user by selecting different terminals to set different output currents.
First object of the present utility model is to realize by a kind of like this light adjusting circuit, this light adjusting circuit comprises for controlling the main control module of light modulation, the elementary modular converter being connected with main control module respectively and ancillary coil module, main control module is arranged on the primary side of light adjusting circuit, wherein light adjusting circuit also comprises: primary current adjustment module, be connected with main control module, the first signal of the output current of adjustable light adjusting circuit is provided to main control module; And voltage protection module, be connected with main control module, the secondary signal of the peak power output that can limit light adjusting circuit is provided to main control module.According to such design, by this light adjusting circuit, can in the situation that keeping peak power output constant, regulate the output current of primary side, thereby realize in phase-cut dimming circuit for example, change the possibility of the output current of primary side.
According to scheme of the present utility model; primary current adjustment module comprises current regulation unit and regulation unit, and current regulation unit and voltage protection module provide first signal and the secondary signal with while regulation output electric current and peak power output to main control module respectively according to the state of a control of regulation unit.Main control module, according to first signal and secondary signal, can, when not changing peak power output, regulate the output current of light adjusting circuit.
Preferably, regulation unit comprises static discharge unit and at least one control interface, and the state of a control that current regulation unit and voltage protection module characterize according to control interface provides first signal and secondary signal to main control module respectively.By regulating at least one control interface, this light adjusting circuit provides the possibility of a plurality of different output currents of setting to user, and by this static discharge unit, can protect this light adjusting circuit can not be subject to the impact of static.
Preferably, control interface is set to three, and three control interfaces provide at least three kinds of state of a controls to current regulation unit and voltage protection module.By these three control interfaces, this light adjusting circuit provides the possibility of at least three kinds of output currents that can set to user, thereby changes output current according to application demand.
Preferably, state of a control characterizes the output current value of different settings.
Preferably, control interface is set to provide state of a control in the mode of short circuit.With so simple form, can effectively carry out the switching between different state of a controls, and guarantee the stability of the work of the light adjusting circuit under each state.
Preferably, current regulation unit comprises the first regulon and the second regulon, and the first regulon and/or the second regulon provide first signal according to state of a control to main control module.By a plurality of regulons, can adapt to the requirement of different state of a controls to light adjusting circuit, for example the requirement to the variation of internal driving.
Preferably, the first regulon comprises the first transistor and the second resistance, the second regulon comprises the 4th transistor and the 5th resistance, wherein, the second resistance is connected to the first interface of control interface by the first transistor and static discharge unit, and the 5th resistance is connected to the 3rd interface of control interface by the 4th transistor and static discharge unit.By the first transistor, control the switch of this first regulon, and according to this on off state, change the first signal sending to main control module.
Preferably, elementary modular converter comprises the first resistance, and the first resistance is connected between the second resistance and the 5th resistance, and current regulation unit provides first signal by the first resistance to main control module.By this first resistance and in conjunction with the second resistance or the 5th resistance, can adapt to different state of a controls to for example requirement of light adjusting circuit internal driving.
Preferably; voltage protection module comprises transistor seconds, the 3rd transistor, the 5th transistor, the 6th transistor, the 4th resistance and the 6th resistance; the 4th resistance is connected to the first interface of control interface by the 3rd transistor, transistor seconds and static discharge unit, and the 6th resistance is connected to the 3rd interface of control interface by the 6th transistor, the 5th transistor and static discharge unit.According to different state of a controls, can control different transistorized switches, thereby for example regulate the input impedance of the port that this voltage protection module is connected with main control module, thereby the secondary signal providing to main control module is provided.
Preferably, ancillary coil module comprises the 3rd resistance, and the 3rd resistance is connected between the 4th resistance and the 6th resistance.By the 3rd resistance, and in conjunction with the 4th resistance or the 6th resistance, the input impedance of the port that effectively regulation voltage protection module is connected with main control module, thus the secondary signal providing to main control module is provided.
Preferably, the first transistor and the 4th transistor have low on-resistance.The first transistor and the 4th transistor of design can be adapted to various state of a control like this.
Preferably, the 3rd transistor and the 6th transistor have low on-resistance.Like this, the 3rd transistor and the 6th transistor can be adapted to various state of a control.
Preferably, static discharge unit comprises a plurality of diodes, and control interface is connected with voltage protection unit with current regulation unit respectively by a plurality of diodes.By the plurality of diode, can effectively protect this light adjusting circuit not to be subject to the impact of static.
Preferably, static discharge unit comprises at least one Zener diode, and the negative electrode of Zener diode is connected to the second interface of control interface.This Zener diode, in the situation that being connected with the second interface, provides reference voltage to regulation unit, to change state of a control in conjunction with first interface and the 3rd interface.。
Another object of the present utility model realizes by a kind of like this lighting device, and wherein, this lighting device comprises according to above-described light adjusting circuit.Such lighting device can be effectively in the situation that keeping power output constant, and regulation output electric current, meets the requirement of user to the adjusting of primary side output current.
Accompanying drawing explanation
Accompanying drawing forms the part of this specification, for helping further to understand the utility model.These accompanying drawings illustrate embodiment of the present utility model, and are used for illustrating principle of the present utility model together with specification.Identical parts represent with identical label in the accompanying drawings.Shown in figure:
Fig. 1 is the high-level schematic functional block diagram according to light adjusting circuit of the present utility model; And
Fig. 2 is the physical circuit schematic diagram according to light adjusting circuit of the present utility model.
Embodiment
Fig. 1 shows according to the high-level schematic functional block diagram of light adjusting circuit 100 of the present utility model.As shown in Figure 1, this light adjusting circuit 100 comprises main control module 1, elementary modular converter 4 and ancillary coil module 5, wherein main control module 1 is arranged on primary side and for being controlled at the light modulation of primary side, elementary modular converter 4 is connected with main control module 1 respectively with ancillary coil module 5.In addition; this light adjusting circuit 100 also comprises primary current adjustment module 3 and the voltage protection module 2 being connected with main control module 1 respectively; wherein; primary current adjustment module 3 provides first signal S1 to main control module 1; for regulating the output current of this light adjusting circuit 100; and voltage protection module 2 provides secondary signal S2 to main control module 1, for limiting the peak power output of this light adjusting circuit 100.
Meanwhile, in order to realize the primary side electric current that changes this light adjusting circuit 100 under different state of a controls, in this primary current adjustment module 3, be also provided with current regulation unit 31 and regulation unit 32.This current regulation unit 31 can be by the first regulon 311 and the second regulon 312, and the different state of a control setting according to regulation unit 32 changes.Wherein, this state of a control can for example be set to characterize the output current value of different required settings, and such output current value can be set to for example three, accordingly, the control interface 322 of regulation unit 32 can be set to three X1, X2, X3, to adapt to different state of a controls to for example requirement of the internal driving of light adjusting circuit 100, thereby set different output currents.In addition,, in order to protect light modulation unit 100 can not be subject to the impact of static, also in changing light adjusting circuit 100, be provided with the static discharge unit 321 for static discharge.
Fig. 2 shows the physical circuit schematic diagram according to light adjusting circuit 100 of the present utility model.As shown in Figure 2, according to the present embodiment, voltage protection module 2, primary current adjustment module 3, elementary modular converter 4 and ancillary coil module are connected to the different port of main control module 1.Wherein, the port of main control module 1 can be according to the different controller adopting in embodiment, and for example the MP4030 of MPS or MP4020, be set to source class port (S) such as zero current detection port (ZCD) and internal main MOSFET etc.
Wherein, this primary current adjustment module 3 is designed to comprise the current regulation unit 31 consisting of the first regulon 311 and the second regulon 312, and the regulation unit 32 consisting of static discharge unit 321 and at least one control interface 322.Described the first regulon 311 and the second regulon 312 can be designed to comprise respectively transistor and resistance, and wherein the first regulon 311 comprises that the first transistor Q1 and the second resistance R 2, the second regulons 312 comprise the 4th transistor Q4 and the 5th resistance.
Wherein, in the present embodiment, transistor can be designed to common field effect transistor MOSFET also can be for reaching the controlled electron device of similar or same effect.According to the present embodiment, control interface 322 comprises three different interface X1, X2, X3, by these three interfaces, can realize the different for example state of a controls of three, the state of a control different according to this, selectively activate the first regulon 311 or the second regulon 312, thereby in conjunction with the first resistance R 1 of elementary modular converter 4, form different impedances, thereby to main control module 1, provide different first signal S1, finally to change primary side electric current.
In addition, described static discharge unit 321 comprises a plurality of diode D1, D2, D4, D6, D7 and Zener diode D5, to realize this light adjusting circuit of protection, is not subject to electrostatic influence.Wherein, this Zener diode D5 is with after for example the second interface X2 is connected, to regulation unit 32, provide reference voltage VREF, like this when for example by first interface X1 and the second interface X2 short circuit, the first transistor Q1, transistor seconds Q2 and the 6th transistor Q6 close, the 3rd transistor Q3, the 4th transistor Q4 and the 5th transistor Q5 open, now, the input impedance of the port that voltage protection module 2 is connected with main control module 1 is determined by the 3rd resistance R 3 and the 6th resistance R 6, and the input impedance of the port that current regulation unit 31 is connected with main control module 1 is determined by the first resistance R 1 and the second resistance R 2, thereby can provide the wherein a kind of state of a control in a plurality of state of a controls to this light adjusting circuit 100, under this state of a control, this light adjusting circuit 100 has one according to the output current of the setting of this state of a control, 700mA for example, similarly, for example, by the 3rd interface X3 and the second interface X2 short circuit, can provide another kind of state of a control to this light adjusting circuit 100, under this state of a control, this light adjusting circuit 100 for example has, according to the setting of this state of a control and different under state of a control output currents, 600mA, meanwhile, if when there is no short circuit connecting between these three interface X1, X2, X3, this light adjusting circuit 100 has according to the output current of the setting of this state of a control, 500mA for example, this output current is from different under state of a control and state of a control.
In the present embodiment, main control module 1 can be designed to use for example MP4030 controller of MPS, and meanwhile, this controller also available controller that reaches similar or same effect is replaced, for example MP4020.Like this; voltage protection module 2 can be connected to for example zero current detection port (ZCD) of this controller; thereby setting peak power output; primary current adjustment module 3 is connected to the source class port (S) of the internal main MOSFET of this controller by elementary modular converter 4, to change the electric current of primary side simultaneously.
Shown in Fig. 2 is only example of the present utility model; the utility model can have various distortion; for example, according to concrete applied environment; two control ports can be set; or three above control ports; in addition; in actual applications; judgement according to user to embodiment; in the illustrated embodiment; for example current regulation unit 31 is along with the difference of control port quantity can have the regulon greater or less than two, and voltage protection unit 2 can have four transistors greater or less than the present embodiment.
These are only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All any modifications of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model within spirit of the present utility model and principle.
Reference number
1 main control module
2 voltage protection modules
3 primary current adjustment modules
4 elementary modular converters
5 ancillary coil modules
100 light adjusting circuits
31 current regulation units
311 first regulons
312 second regulons
32 regulation units
321 static discharge unit
322 control interfaces
S1 first signal
S2 secondary signal
Q1 the first transistor
Q2 transistor seconds
Q3 the 3rd transistor
Q4 the 4th transistor
Q5 the 5th transistor
Q6 the 6th transistor
R1 the first resistance
R2 the second resistance
R3 the 3rd resistance
R4 the 4th resistance
D1 diode
D2 diode
D4 diode
D5 Zener diode
D6 diode
D7 diode
X1 first interface
X2 the second interface
X3 the 3rd interface
VREF reference voltage.
Claims (16)
1. a light adjusting circuit (100), comprise the main control module (1) for controlling light modulation, the elementary modular converter (4) being connected with described main control module (1) respectively and ancillary coil module (5), described main control module (1) is arranged on the primary side of described light adjusting circuit (100), described light adjusting circuit (100) is characterised in that, also comprises:
Primary current adjustment module (3), is connected with described main control module (1), and the first signal (S1) of the output current that regulates described light adjusting circuit (100) is provided to described main control module (1); With
Voltage protection module (2), is connected with described main control module (1), and the secondary signal (S2) of the peak power output that limits described light adjusting circuit (100) is provided to described main control module (1).
2. light adjusting circuit according to claim 1 (100), is characterized in that,
Described primary current adjustment module (3) comprises current regulation unit (31) and regulation unit (32),
Described current regulation unit (31) and described voltage protection module (2) provide described first signal (S1) and described secondary signal (S2) to regulate described output current and described peak power output simultaneously to described main control module (1) respectively according to the state of a control of described regulation unit (32).
3. light adjusting circuit according to claim 2 (100), is characterized in that,
Described regulation unit (32) comprises static discharge unit (321) and at least one control interface (322),
The state of a control that described current regulation unit (31) and described voltage protection module (2) characterize according to described control interface (322) provides described first signal (S1) and described secondary signal (S2) to described main control module (1) respectively.
4. light adjusting circuit according to claim 3 (100), is characterized in that,
Described control interface (322) is set to three, to provide at least three kinds of state of a controls to described current regulation unit (31) and described voltage protection module (2).
5. according to the light adjusting circuit described in claim 3 or 4 (100), it is characterized in that, described state of a control characterizes different predetermined output current values.
6. light adjusting circuit according to claim 4 (100), its feature exists, and described control interface (322) is set to provide described state of a control in the mode of short circuit.
7. light adjusting circuit according to claim 3 (100), is characterized in that,
Described current regulation unit (31) comprises the first regulon (311) and the second regulon (312),
Described the first regulon (311) and/or described the second regulon (312) provide first signal (S1) according to described state of a control to described main control module (1).
8. light adjusting circuit according to claim 7 (100), is characterized in that,
Described the first regulon (311) comprises the first transistor (Q1) and the second resistance (R2), and described the second regulon (312) comprises the 4th transistor (Q4) and the 5th resistance (R5),
Wherein, described the second resistance (R2) is connected to the first interface (X1) of described control interface (322) by described the first transistor (Q1) and described static discharge unit (321), and described the 5th resistance (R5) is connected to the 3rd interface (X3) of described control interface (322) by described the 4th transistor (Q4) and described static discharge unit (321).
9. light adjusting circuit according to claim 8 (100), is characterized in that,
Described elementary modular converter (4) comprises the first resistance (R1), and described the first resistance (R1) is connected between described the second resistance (R2) and described the 5th resistance (R5), and
Described current regulation unit (31) provides first signal (S1) by described the first resistance (R1) to described main control module (1).
10. light adjusting circuit according to claim 3 (100), is characterized in that,
Described voltage protection module (2) comprises transistor seconds (Q2), the 3rd transistor (Q3), the 5th transistor (Q5), the 6th transistor (Q6), the 4th resistance (R4) and the 6th resistance (R6),
Described the 4th resistance (R4) is connected to the first interface (X1) of described control interface (322) by described the 3rd transistor (Q3), described transistor seconds (Q2) and described static discharge unit (321), and described the 6th resistance (R6) is connected to the 3rd interface (X3) of described control interface (322) by described the 6th transistor (Q6), described the 5th transistor (Q5) and described static discharge unit (321).
11. light adjusting circuits according to claim 10 (100), is characterized in that,
Described ancillary coil module (5) comprises the 3rd resistance (R3), and described the 3rd resistance (R3) is connected between described the 4th resistance (R4) and described the 6th resistance (R6).
12. light adjusting circuits according to claim 8 (100), is characterized in that,
Described the first transistor (Q1) and described the 4th transistor (Q4) have low on-resistance.
13. light adjusting circuits according to claim 10 (100), is characterized in that,
Described the 3rd transistor (Q3) and described the 6th transistor (Q6) have low on-resistance.
14. light adjusting circuits according to claim 3 (100), is characterized in that,
Described static discharge unit (321) comprises a plurality of diodes, and described control interface (322) is connected with described voltage protection module (2) with described current regulation unit (31) respectively by described a plurality of diodes.
15. light adjusting circuits according to claim 14 (100), is characterized in that,
Described static discharge unit (321) comprises at least one Zener diode (D5), and the negative electrode of described Zener diode (D5) is connected to second interface (X2) of described control interface (322).
16. 1 kinds of lighting devices, is characterized in that, comprise according to the light adjusting circuit (100) described in any one in claim 1-15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512951.8U CN203482455U (en) | 2013-08-21 | 2013-08-21 | Light modulation circuit and lighting device comprising same |
| PCT/EP2014/066885 WO2015024780A1 (en) | 2013-08-21 | 2014-08-06 | Dimming circuit and illuminating device comprising the dimming circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512951.8U CN203482455U (en) | 2013-08-21 | 2013-08-21 | Light modulation circuit and lighting device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203482455U true CN203482455U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320512951.8U Expired - Fee Related CN203482455U (en) | 2013-08-21 | 2013-08-21 | Light modulation circuit and lighting device comprising same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203482455U (en) |
| WO (1) | WO2015024780A1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2592904A1 (en) * | 2007-05-07 | 2013-05-15 | Koninklijke Philips Electronics N.V. | High power factor LED-based lighting apparatus and methods |
-
2013
- 2013-08-21 CN CN201320512951.8U patent/CN203482455U/en not_active Expired - Fee Related
-
2014
- 2014-08-06 WO PCT/EP2014/066885 patent/WO2015024780A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2015024780A1 (en) | 2015-02-26 |
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| GR01 | Patent grant | ||
| 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: 20140312 Termination date: 20170821 |