CN103108438A - Light source supplying module - Google Patents
Light source supplying module Download PDFInfo
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- CN103108438A CN103108438A CN2012101854221A CN201210185422A CN103108438A CN 103108438 A CN103108438 A CN 103108438A CN 2012101854221 A CN2012101854221 A CN 2012101854221A CN 201210185422 A CN201210185422 A CN 201210185422A CN 103108438 A CN103108438 A CN 103108438A
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Abstract
A light source supplying module comprises at least one light emitting diode, a switch power supply device and a control device. The switch power supply device comprises an input port, an output port, a power supply switching circuit and a switching circuit, wherein the input port is electrically connected with the power supply switching circuit and a power supply. The power supply switching circuit outputs electric energy which is transformed into pre-set voltage and a pre-set current from the power supply to the light emitting diode through the output port. The switching circuit is composed in a resistance-capacitance coupled (RCC) circuit mode and electrically connected with the power supply switching circuit. The switching circuit is used for conducting or cutting the electric energy output by the power supply switching circuit in order to limit the current output by the power supply switching circuit to the light emitting diode to be a preset current value. The control device is used for increasing a power factor of the switch power supply device.
Description
Technical field
The present invention is relevant with the Optical devices design, in more detail refers to a kind of light source supply module.
Background technology
Progress along with optics science and technology, light-emitting diode (Light-emitting diode, LED) processing procedure is day by day ripe with application, but and light-emitting diode has advantages such as volume is little, reaction is fast, the life-span long, be difficult for decay, firm in appearance, vibration resistance full-color light-emitting (containing invisible light), loss is low, thermal radiation is little, volume production is easy, to change with, the light source of more and more light source supply modules to adopt light-emitting diode to replace traditional fluorescent tube or bulb.
And the larger difference of the action of light-emitting diode and other electronic building bricks is that it is mainly that number according to the electric current that passes through decides the action degree, but not for the number that gives voltage.Be with, utilize light-emitting diode as the light source supply module of stabilized light source supply, usually can design the switching power unit of deciding electric current and supply stable electric current and light-emitting diode.
Yet, progress along with electronics technology, the switching power unit of light source supply module normally utilizes the design of electronic chip to reach the effect of deciding electric current, but electronic chip not only cost is comparatively expensive, and must extra power supply just can reach the effect that its internal circuit designs, not only can cause expending of additional electrical energy, and reaction speed is also comparatively slow.In addition, if the user wants to set up dimmer when light-emitting diode is carried out light modulation, easily make dimmer and switching power unit produce and chase phenomenon, and can cause light-emitting diode to have the situation of flicker to produce.Be with, the design of the light source supply module commonly used is not attained perfect yet, and locating of still having much room for improvement.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of light source supply module, and not only cost is low and reaction speed is fast.
Edge is to reach above-mentioned purpose, the invention provides a light source supply module, it includes at least one light-emitting diode and a switching power unit, wherein, this switching power unit comprises an input port, an output port, a power-switching circuit, a switching circuit, wherein, this input port is in order to be electrically connected with a power supply; This output port is in order to be electrically connected with this light-emitting diode; This power-switching circuit and this input port and this output port are electrically connected, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to; This switching circuit is to shake coil converter (Ringing Choke Converter, RCC) mode of circuit consists of, and be electrically connected with this power-switching circuit, in order to conducting or block the electric energy of this power-switching circuit output, give the electric current of this light-emitting diode in a predetermined current value and limit this power-switching circuit output.
According to above-mentioned design, this switching power unit also comprises a voltage compensating circuit, is electrically connected with this switching circuit, in order to control this switching circuit, when making the voltage change of this power supply supply, still can limit this power-switching circuit output and give the electric current of this light-emitting diode in this predetermined current value.
According to above-mentioned design, this switching power unit also comprises a temperature-compensation circuit, be electrically connected with this switching circuit, in order to control this switching circuit, when making the working temperature change of this switching power unit, still can limit this power-switching circuit output and give the electric current of this light-emitting diode in this predetermined current value.
According to above-mentioned design, this voltage compensating circuit is to be in series by a diode and electric capacity and resistance parallel circuits.
According to above-mentioned design, this temperature-compensation circuit is made of thermistor.
According to above-mentioned design, this power-switching circuit includes a DC-DC converter (DC/DCConverter), convert the electric energy of a predetermined voltage or electric current in order to the electric energy that will receive after output give this load.
According to above-mentioned design, this power-switching circuit also includes a rectification circuit, is electrically connected with this input port, and in order to receiving the electric energy of this power supply, and after converting thereof into direct current, this DC-DC converter is given in output.
The present invention provides a light source supply module again, it includes at least one light-emitting diode, a switching power unit and a control device, wherein, this switching power unit comprises an input port, an output port, a power-switching circuit, a switching circuit, wherein, this input port is in order to be electrically connected with a power supply; This output port is in order to be electrically connected with this light-emitting diode; This power-switching circuit and this input port and this output port are electrically connected, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to; This switching circuit is to shake coil converter (Ringing Choke Converter, RCC) mode of circuit consists of, and be electrically connected with this power-switching circuit, in order to conducting or block the electric energy of this power-switching circuit output, give the electric current of this light-emitting diode in a predetermined current value and limit this power-switching circuit output; This control device is electrically connected this switching circuit, in order to controlling this switching circuit, and changes the power factor of this power-switching circuit.
According to above-mentioned design, this power-switching circuit includes a rectification circuit and a DC-DC converter (DC/DC Converter); This rectification circuit is electrically connected this input port and this DC-DC converter, this DC-DC converter is electrically connected this switching circuit and this output port, this rectification circuit receives the electric energy of this power supply, and converts thereof into after direct current and to export after converting the electric energy of a predetermined voltage or electric current to by this DC-DC converter.
According to above-mentioned design, this control device includes a detecting unit and is electrically connected this switching circuit, this control device is detected the input voltage of this DC-DC converter by this detecting unit, and export one and control signal to this switching circuit, control the waveform of input current of this DC-DC converter in a scheduled current waveform.
According to above-mentioned design, this light source supply module also comprises a voltage compensating circuit, is electrically connected with this switching circuit, and this detecting unit is electrically connected this switching circuit by this voltage compensating circuit.
According to above-mentioned design, this control device also includes a pulse-width modulation (Pulse Width Modulation, PWM) unit, be electrically connected an integrating circuit and this detecting unit, and this integrating circuit is electrically connected this switching circuit, the waveform output one pulse-width modulation signal of this pulse-width modulation unit to input voltage that should DC-DC converter, and convert this control signal to via this integrating circuit.
According to above-mentioned design, this control device also includes a simulation output unit, is electrically connected this switching circuit and this detecting unit, and this simulation output unit is according to this control signal corresponding to waveform output of the input voltage of this DC-DC converter.
According to above-mentioned design, when the voltage of this power supply supply changed, this control device changed the voltage quasi position of this control signal, gave the electric current of this light-emitting diode in this predetermined current value and limit this power-switching circuit output.
According to above-mentioned design, this control device is monitored the output voltage of this DC-DC converter by this detecting unit, when this output voltage changed, this control device changed the voltage quasi position of this control signal, and adjusted the current value that this light-emitting diode is given in this power-switching circuit output.
According to above-mentioned design, this DC-DC converter has an output feedback end and is electrically connected this detecting unit, and this detecting unit is monitored the output voltage of this DC-DC converter by this output feedback end.
Be with, just can utilize electronic chip can reach the purpose of deciding electric current by above-mentioned design, and not only cost is low to make this switching power unit, also the fast effect of reaction speed.
Description of drawings
For being illustrated more clearly in the present invention, hereby lift preferred embodiment and coordinate diagram to be described in detail as follows, wherein:
Fig. 1 is the calcspar of the present invention's the first preferred embodiment;
Fig. 2 is the feasible detailed circuit diagram of the present invention's the first preferred embodiment;
Fig. 3 is the calcspar of the present invention's the second preferred embodiment;
Fig. 4 is the feasible detailed circuit diagram of the present invention's the second preferred embodiment;
Fig. 5 is the feasible calcspar of the present invention's the 3rd preferred embodiment;
Fig. 6 is the feasible detailed circuit diagram of the present invention's the 3rd preferred embodiment;
Fig. 7 is the feasible calcspar of the present invention's the 4th preferred embodiment;
Fig. 8 is the feasible detailed circuit diagram of the present invention's the 4th preferred embodiment;
Fig. 9 carries out light modulation for announcement the present invention more can set up dimmer;
Figure 10-Figure 13 discloses design of the present invention and also is applicable to non-isolated transformer;
Figure 14 is the oscillogram that the present invention measures the first preferred embodiment;
Figure 15 is the feasible calcspar of the present invention's the 5th preferred embodiment;
Figure 16 is the feasible detailed circuit diagram of the present invention's the 5th preferred embodiment;
Figure 17 is the waveform schematic diagram that the input current of DC-DC converter is controlled in the present invention's the 5th preferred embodiment;
Figure 18 is another feasible detailed circuit diagram of the present invention's the 5th preferred embodiment;
Figure 19 is another feasible input voltage detecting detailed circuit diagram of the present invention's the 5th preferred embodiment; And
Figure 20 is another feasible output voltage monitoring detailed circuit diagram of the present invention's the 5th preferred embodiment.
Embodiment
See also Fig. 1, the light source supply module of the first preferred embodiment provided by the invention, it includes a switching power unit 1 and several light-emitting diodes 2, this switching power unit 1 supplies to give these light-emitting diodes 2 in order to the electric energy that receives and change a power supply 100, in the present embodiment, the AC power that this power supply 100 is supplied for Utilities Electric Co., but not as limit, also can use DC power supply or the AC power that electrification energy storage system (as wind power generation, solar power generation, geothermal power generation etc.) produces instead according to demand being set or environment being set.This switching power unit 1 comprises an input port 10, an output port 20, a power-switching circuit 30, a switching circuit 40, wherein:
This input port 10 is in order to be electrically connected with this power supply 100.
This output port 20 is in order to be electrically connected with these light-emitting diodes 2.
This power-switching circuit 30 is electrically connected with this input port 10 and this output port 20, and include a rectification circuit 301 and a DC-DC converter (DC/DC Converter) 302, this rectification circuit 301 is electrically connected with this input port 10, in order to receiving the electric energy of this power supply 100, and export after converting thereof into direct current.This DC-DC converter 302 is electrically connected with this rectification circuit 301 and this output port 20, and in order to receiving the direct current of rectification circuit 301 outputs, and after the electric energy that receives being converted to the electric energy of a predetermined voltage or electric current, this light-emitting diode 2 is given in output.
This switching circuit 40 is that the mode of shaking auto-excitation type (Self-oscillating) circuit of coil converter (Ringing Choke Converter, RCC) consists of, but not as limit, also other feasible auto-excitation type circuit.This switching circuit and this power-switching circuit 30 are electrically connected, in order to conducting or block the electric energy of this power-switching circuit 30 outputs, and limit electric current that 30 outputs of this power-switching circuit give this light-emitting diode 2 in a predetermined current value, and then reach and decide electric current for purpose that should these light-emitting diodes 2.
See also Fig. 2, be structure take the present invention's the first preferred embodiment under architecture, a kind of feasible detailed circuit structure wherein.In the present embodiment, this DC-DC converter 302 is an isolated transformer, but not as limit.when power supply 100 begins power supply when giving this power-switching circuit 30, transistor Q1 conducting in this switching circuit 40, and make this DC-DC converter 302 move and supply electric energy and give these light-emitting diodes 2, the continuous Figure 14 that consults, this will make the collected current rising (as waveform 1) of transistor Q1, and transistor Q2 base voltage rising (as waveform 2), when the base voltage of transistor Q2 rises to predetermined value, make transistor Q2 conducting and another transistor Q1 is turn-offed, and this DC-DC converter 302 begins to release energy, and the voltage waveforms of the reference coil N2 of this DC-DC converter 302 is negative pressure (as waveform 3), after transistor Q1 turn-offed a period of time, these DC-DC converter 302 energy discharged complete, and the voltage waveforms of the reference coil N2 of this DC-DC converter 302 transfers malleation to, and makes transistor Q1 conducting, and turn-offs transistor Q2, and then carry out the circulation of transistor Q1, the mutual conducting of Q2 according to above-mentioned principle, and then reach 302 outputs of restriction power-switching circuit and give the electric current of light-emitting diode 2 in the effect of this predetermined current value.
In addition, when input power is unstable, easily the electric current of these light-emitting diodes of impact output produces the situation of floating, for avoiding said circumstances to occur, see also Fig. 3, use the light source supply module of the second preferred embodiment switching power unit 3 for the present invention, this switching power unit 3 includes an input port 11, an output port 21, a power-switching circuit 31 and the switching circuit 41 with last embodiment same structure equally, repeats no more in this appearance.And be that with above-described embodiment difference this switching power unit 3 also includes a voltage compensating circuit 51, be electrically connected with this switching circuit 41, in order to control this switching circuit 41, when the voltage generation of these power supply 100 supplies is floated, and the direct current that makes rectification circuit 311 supply still can limit these power-switching circuit 312 outputs and give the electric current of these light-emitting diodes 4 in this predetermined current value when changing.
Continuous consult Fig. 4, be structure take the present invention's the second preferred embodiment under architecture, a kind of feasible detailed circuit structure wherein.In the present embodiment, this voltage compensating circuit 51 is in series by a diode D1 and capacitor C 1 and resistance R 1, R2 parallel circuits, but not as limit.When the voltage generation of these power supply 100 supplies is floated, and the direct current that makes 311 supplies of this rectification circuit is when rising, to make the voltage of capacitor C 1 rise, cause the base voltage rate of climb of transistor Q4 to increase, and then accelerate transistor Q4 conducting and shorten time of transistor Q3 conducting, and the voltage that makes input still can reach the effect of stabilizing output current when rising.
moreover, when the light source supply module provides light source after a period of time, its working temperature can rise gradually, and easily have influence on the action of internal structure, the electric current that can make output give these light-emitting diodes produces the situation that promotes gradually, for avoiding said circumstances to occur, see also Fig. 5, use the light source supply module of the 3rd preferred embodiment switching power unit 5 for the present invention, this switching power unit 7 includes the input port 12 with the first embodiment same structure equally, one output port 22, one power-switching circuit 32 and a switching circuit 42, repeat no more in this appearance.And be that with above-described embodiment difference this switching power unit 5 also includes a temperature-compensation circuit 52, be electrically connected with this switching circuit 42, in order to control this switching circuit 42, when making the working temperature change of this switching power unit 5, still can limit these power-switching circuit 32 outputs and give the electric current of this light-emitting diode 6 in this predetermined current value.
Continuous consult Fig. 6, be structure take the present invention's the second preferred embodiment under architecture, a kind of feasible detailed circuit structure wherein.In the present embodiment, this temperature-compensation circuit 62 is in series by a resistance R 3 and a thermistor RH1, but not as limit.When the working temperature of this switching power unit 5 rises, to make the resistance of this thermistor RH1 increase, cause the base voltage rate of climb of transistor Q6 to increase, and then shorten the time of transistor Q5 conducting, and when making working temperature rise, still can reach the effect of stabilizing output current.
Again, for reaching the better electric current supply of deciding effect, see also Fig. 7, use the light source supply module of the 4th preferred embodiment switching power unit 7 for the present invention, this switching power unit 7 includes an input port 13, an output port 23, a power-switching circuit 33 and the switching circuit 43 with the first embodiment same structure equally, repeats no more in this appearance.And with above-described embodiment difference be this switching power unit 7 also include a voltage compensating circuit 53 that is electrically connected with this switching circuit 43 and one with the temperature-compensation circuit 54 of these voltage compensating circuit 53 electric connections, to reach the effect of voltage and temperature dual compensation, can be more stable and make output give the electric current of light-emitting diode 8.
Continuous consult Fig. 8, be structure take the present invention's the 4th preferred embodiment under architecture, a kind of feasible detailed circuit structure wherein.In the present embodiment, this voltage compensating circuit 53 is in series by a diode D2 and capacitor C 2 and resistance R 4, R5 parallel circuits, this temperature-compensation circuit 54 is made of a thermistor RH2, and connects with the resistance R 5 of this voltage compensating circuit 53, but not as limit.Float when the voltage of this power supply supply produces, and when making the direct current of these rectification circuit 331 supplies rise, will make the voltage of capacitor C 2 rise, cause the base voltage rate of climb of transistor Q8 to increase, and then shorten the time of transistor Q7 conducting; And when the working temperature of this switching power unit 7 rises, will make the resistance of this thermistor RH2 increase, also can cause the base voltage rate of climb of transistor Q8 to increase, and then shorten the time of transistor Q7 conducting.Be with, by above-mentioned design, and make no matter be that voltage changes or working temperature is when changing, still can stabilizing output current, and then reach the effect of dual compensation.
in addition, see also Fig. 9, take Fig. 1 as the basis, illustrate that the light source supply module more can set up a dimmer 9 between this power supply 100 and this switching power unit 1, after the electric energy of this power supply 100 is adjusted by this dimmer 9, output is for giving this switching power unit 1, to reach the purpose of adjusting light-emitting diode 2 brightness, and electric energy is for after giving, this switching circuit 40 can not have delay-action situation to produce because of the extra power supply of needs, and then can avoid this dimmer 9 to produce with this switching power unit 1 and chase phenomenon, and can not cause light-emitting diode 2 to have the situation of flicker to produce.And except the first embodiment, also second, third and the 4th embodiment of where applicable simultaneously.
Should be noted that, the switching power unit of the present invention first to fourth embodiment also can correspondingly respectively be applicable to non-isolated transformer and reach the effect that stabling current is exported as Figure 10 to Figure 13 except being applicable to above-mentioned isolated transformer.In addition, in the switching circuit of above-mentioned each accompanying drawing, diode D used also can use the resistance replacement instead according to the demand that arranges.Moreover, transistor Q1, Q3 used in the switching circuit of the various embodiments described above, Q5, Q7, and Figure 10 to Figure 13 in corresponding transistor also can use metal oxide semiconductcor field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) instead and replace reaching identical purpose.
In addition, in order to increase the power factor of this switching power unit, see also Figure 15, use the light source supply module of the 5th preferred embodiment switching power unit 14 for the present invention, this switching power unit 14 includes an input port 11, an output port 21, a power-switching circuit 31, a switching circuit 41 and the voltage compensating circuit 51 with the second preferred embodiment same structure equally, repeats no more in this appearance.And be that with above-described embodiment difference this light source supply module also includes a control device 56 and is electrically connected with this voltage compensating circuit 51, with the waveform of the input current of revising this DC-DC converter 312, increase the power factor of this switching power unit 14.
Continuous consult Figure 16, be structure take the present invention's the 5th preferred embodiment under architecture, a kind of feasible detailed circuit structure wherein.In the present embodiment, this control device 56 includes a detecting unit 561 and a pulse-width modulation (Pulse Width Modulation, PWM) unit 562.Wherein, this detecting unit 561 has a first input end 561a and one second input 561b; This first input end 561a is electrically connected to this capacitor C 1, to detect the input voltage of this DC-DC converter 312.This pulse-width modulation unit 562 and this detecting unit 561 are electrically connected, and are electrically connected to the base stage of this transistor Q4 by an integrating circuit 57.the continuous Figure 17 that consults, this pulse-width modulation unit 562 is according to voltage waveform (as waveform 1) the output one pulse-width modulation signal (as waveform 2) of detecing the measured capacitor C of side unit 561 1, and after converting a control signal (as waveform 3) to through this integrating circuit 57, output to the base stage of transistor Q4, with the time of change transistor Q4 turn-on and turn-off and the time of transistor Q3 turn-on and turn-off, thereby the waveform (as waveform 4) of the input current of original DC-DC converter 312 is modified to the input current waveform (as waveform 5) of convergence ideal sine wave.
Separately, when the voltage generation of these power supply 100 supplies is floated, and the direct current that makes 311 supplies of this rectification circuit is when rising, this control device 56 also can detect change in voltage, and correspondingly changes the pulsewidth of this pulse-width modulation signal, to increase the voltage quasi position of this control signal, the base voltage rate of climb of transistor Q4 is increased, and then accelerate transistor Q4 conducting and shorten time of transistor Q3 conducting, and when making the voltage of input rise, still can reach the effect of stabilizing output current.Otherwise when the direct current of this rectification circuit 311 supplies descended, 56 voltage quasi positions that reduce these control signals of this control device reached the effect of stabilizing output current.
The second input 561b of this detecting unit 561 is electrically connected the reference coil N3 of this DC-DC converter 312, in order to detect the voltage of this reference coil N3, in other words, namely pass through the output voltage of this DC-DC converter 312 of this reference coil N3 indirect monitoring.When the output voltage of this DC-DC converter 312 increases, be reflected to immediately this detecting unit 561, this moment, this control device 56 changed the pulsewidth of this pulse-width modulation signal, increased this control signal voltage quasi position, to reduce output current, avoid light-emitting diode 4 overheated.
In addition, the present invention is except the foregoing circuit structure, and the control device 58 that Figure 18 discloses can reach the effect of above-mentioned control device 56 equally.Wherein, this control device 58 includes a detecting unit 581 and a simulation output unit 582.This detecting unit 581 is same in order to detect the input voltage of this DC-DC converter 312, and the output voltage of monitoring this DC-DC converter 312, this simulation output unit 582 is electrically connected the base stage of this detecting unit 581 and this transistor Q4, in order to directly to export corresponding control signal to the base stage of transistor Q4 according to the measured input voltage of this detecting unit 312 with output voltage, thus, just can not need to convert this pulse-width modulation signal to purpose that this control signal reaches control by this integrating circuit 57 again.
Moreover, see also Figure 19, the present invention also can by with the direct current of this rectification circuit 311 supplies via resistance R 6, resistance R 7 dividing potential drops, and be electrically connected to the mode of the first input end 561a of this detecting unit 561, can reach equally the purpose of these DC-DC converter 312 input voltages of detecting.And in addition to the above methods, see also Figure 20, also can increase at the primary side of this DC-DC converter 312 another auxiliary winding N4, and be electrically connected to the second input 561b of this detecting unit 561, and can reach equally the purpose of monitoring DC-DC converter 312 output voltages.
It is worth mentioning that, the 5th preferred embodiment of the present invention also has the effect of the stabilizing output current of aforementioned the second preferred embodiment to the four better enforcements except having the effect of the power factor that increases this switching power unit 14.In addition, the above only is the better possible embodiments of the present invention, and the equivalent structure that every application specification of the present invention and claim are done changes, and ought to be included in claim scope of the present invention.
Claims (21)
1. light source supply module includes:
At least one light-emitting diode;
One switching power unit includes an input port, an output port, a power-switching circuit, a switching circuit, wherein:
This input port is in order to be electrically connected with a power supply;
This output port is in order to be electrically connected with this light-emitting diode;
This power-switching circuit and this input port and this output port are electrically connected, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to; And
This switching circuit is consisted of in the mode of concussion coil converter circuit, and be electrically connected with this power-switching circuit, in order to conducting or block the electric energy of this power-switching circuit output, give the electric current of this light-emitting diode in a predetermined current value and limit this power-switching circuit output.
2. light source supply module as claimed in claim 1, also comprise a voltage compensating circuit, be electrically connected with this switching circuit, in order to control this switching circuit, when making the voltage change of this power supply supply, still can limit this power-switching circuit output and give the electric current of this light-emitting diode in this predetermined current value.
3. light source supply module as claimed in claim 2, wherein, this voltage compensating circuit is in series by a diode and electric capacity and resistance parallel circuits.
4. light source supply module as claimed in claim 2, also comprise a temperature-compensation circuit, be electrically connected with this voltage compensating circuit, in order to control this switching circuit, when making the working temperature change of this switching power unit, still can limit this power-switching circuit output and give the electric current of this light-emitting diode in this predetermined current value.
5. light source supply module as claimed in claim 1, also comprise a temperature-compensation circuit, be electrically connected with this switching circuit, in order to control this switching circuit, when making the working temperature change of this switching power unit, still can limit this power-switching circuit output and give the electric current of this light-emitting diode in this predetermined current value.
6. light source supply module as described in claim 4 or 5, wherein, this temperature-compensation circuit is made of thermistor.
7. light source supply module as claimed in claim 1, wherein, this power-switching circuit includes a DC-DC converter, convert the electric energy of a predetermined voltage or electric current in order to the electric energy that will receive after output give this light-emitting diode.
8. light source supply module as claimed in claim 7, wherein, this power-switching circuit also includes a rectification circuit, is electrically connected with this input port, and in order to receiving the electric energy of this power supply, and after converting thereof into direct current, this DC-DC converter is given in output.
9. light source supply module as claimed in claim 1, also comprise a dimmer, and between this power supply and this switching power unit, the electric energy of this power supply is exported after by this dimmer adjustment for giving this switching power unit.
10. light source supply module as claimed in claim 1, wherein, this switching circuit includes two transistors that are of coupled connections, and this switching circuit gives the electric current of this load in this predetermined current value by making the mutual conducting of this two-transistor and limit this power-switching circuit output.
11. light source supply module as claimed in claim 1, wherein, this switching circuit includes transistor AND gate one metal oxide semiconductcor field effect transistor that is coupled and connects, this switching circuit gives the electric current of this load in this predetermined current value by making the mutual conducting of this metal oxide semiconductcor field effect transistor of this transistor AND gate and limit this power-switching circuit output.
12. a light source supply module includes:
At least one light-emitting diode;
One switching power unit includes an input port, an output port, a power-switching circuit, a switching circuit, wherein:
This input port is in order to be electrically connected with a power supply;
This output port is in order to be electrically connected with this light-emitting diode;
This power-switching circuit and this input port and this output port are electrically connected, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to; And
This switching circuit is that the mode with the auto-excitation type circuit is consisted of, and be electrically connected with this power-switching circuit, in order to conducting or block the electric energy of this power-switching circuit output, give the electric current of this light-emitting diode in a predetermined current value and limit this power-switching circuit output.
13. a light source supply module includes:
At least one light-emitting diode;
One switching power unit includes an input port, an output port, a power-switching circuit, a switching circuit, wherein:
This input port is in order to be electrically connected with a power supply;
This output port is in order to be electrically connected with this light-emitting diode;
This power-switching circuit and this input port and this output port are electrically connected, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to;
This switching circuit is that the mode of shaking the coil converter circuit consists of, and be electrically connected with this power-switching circuit, in order to conducting or block the electric energy of this power-switching circuit output, give the electric current of this light-emitting diode in a predetermined current value and limit this power-switching circuit output; And
One control device is electrically connected this switching circuit, in order to controlling this switching circuit, and changes the power factor of this power-switching circuit.
14. light source supply module as claimed in claim 13, wherein this power-switching circuit includes a rectification circuit and a DC-DC converter; This rectification circuit is electrically connected this input port and this DC-DC converter, this DC-DC converter is electrically connected this switching circuit and this output port, this rectification circuit receives the electric energy of this power supply, and converts thereof into after direct current and to export after converting the electric energy of this predetermined voltage or electric current to by this DC-DC converter.
15. light source supply module as claimed in claim 14, wherein this control device includes a detecting unit and is electrically connected this switching circuit, this control device is detected the input voltage of this DC-DC converter by this detecting unit, and export one and control signal to this switching circuit, control the waveform of input current of this DC-DC converter in a scheduled current waveform.
16. light source supply module as claimed in claim 15 also comprises a voltage compensating circuit, is electrically connected with this switching circuit, this detecting unit is electrically connected this switching circuit by this voltage compensating circuit.
17. light source supply module as claimed in claim 15, wherein this control device also includes a pulse-width modulation unit, be electrically connected an integrating circuit and this detecting unit, and this integrating circuit is electrically connected this switching circuit, the waveform output one pulse-width modulation signal of this pulse-width modulation unit to input voltage that should DC-DC converter, and convert this control signal to via this integrating circuit.
18. light source supply module as claimed in claim 15, wherein this control device also includes a simulation output unit, be electrically connected this switching circuit and this detecting unit, this simulation output unit is according to this control signal corresponding to waveform output of the input voltage of this DC-DC converter.
19. light source supply module as claimed in claim 15, when wherein the voltage of this power supply supply changed, this control device changed the voltage quasi position of this control signal, gave the electric current of this light-emitting diode in this predetermined current value and limit this power-switching circuit output.
20. light source supply module as claimed in claim 15, wherein this control device is monitored the output voltage of this DC-DC converter by this detecting unit, when this output voltage changes, this control device changes the voltage quasi position of this control signal, and adjusts the current value that this light-emitting diode is given in this power-switching circuit output.
21. light source supply module as claimed in claim 20, wherein this DC-DC converter has an output feedback end and is electrically connected this detecting unit, and this detecting unit is monitored the output voltage of this DC-DC converter by this output feedback end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185422.1A CN103108438B (en) | 2011-11-15 | 2012-06-07 | Light source supplying module |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110361114.5 | 2011-11-15 | ||
| CN201110361114 | 2011-11-15 | ||
| CN201210185422.1A CN103108438B (en) | 2011-11-15 | 2012-06-07 | Light source supplying module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103108438A true CN103108438A (en) | 2013-05-15 |
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| CN201210185422.1A Expired - Fee Related CN103108438B (en) | 2011-11-15 | 2012-06-07 | Light source supplying module |
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| CN103889116A (en) * | 2014-03-14 | 2014-06-25 | 浙江生辉照明有限公司 | LED driving circuit composed of discrete devices |
| CN105101523A (en) * | 2014-05-14 | 2015-11-25 | 北京圣兆科技开发有限公司 | Photovoltaic wind power led illumination intelligent control system |
| CN105376899A (en) * | 2014-09-02 | 2016-03-02 | 无锡华润华晶微电子有限公司 | BUCK-type light emitting diode circuit |
| CN105451408A (en) * | 2014-09-02 | 2016-03-30 | 无锡华润华晶微电子有限公司 | BUCK type light-emitting diode circuit |
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| CN105101523A (en) * | 2014-05-14 | 2015-11-25 | 北京圣兆科技开发有限公司 | Photovoltaic wind power led illumination intelligent control system |
| CN105376899A (en) * | 2014-09-02 | 2016-03-02 | 无锡华润华晶微电子有限公司 | BUCK-type light emitting diode circuit |
| CN105451408A (en) * | 2014-09-02 | 2016-03-30 | 无锡华润华晶微电子有限公司 | BUCK type light-emitting diode circuit |
| CN105451408B (en) * | 2014-09-02 | 2018-10-09 | 无锡华润华晶微电子有限公司 | A kind of BUCK types circuit of LED |
| CN105376899B (en) * | 2014-09-02 | 2019-01-08 | 无锡华润华晶微电子有限公司 | A kind of BUCK type circuit of LED |
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| CN103108438B (en) | 2015-02-04 |
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