CN202663608U - Driving system for semiconductor light source and semiconductor illuminating device - Google Patents
Driving system for semiconductor light source and semiconductor illuminating device Download PDFInfo
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- CN202663608U CN202663608U CN 201220260704 CN201220260704U CN202663608U CN 202663608 U CN202663608 U CN 202663608U CN 201220260704 CN201220260704 CN 201220260704 CN 201220260704 U CN201220260704 U CN 201220260704U CN 202663608 U CN202663608 U CN 202663608U
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Abstract
The utility model relates to a driving system for a semiconductor light source and a semiconductor illuminating device. The driving system comprises a potential device, a switching device and an output device, wherein the potential device comprises a first coil and a second coil which are coupled with each other; the second coil is used for receiving input voltage; the switching device is connected in series with the second coil of the potential device and is used for controlling energy storage and energy release of the second coil; the output device is connected in parallel with the second coil of the potential device and is used for supplying electricity to the semiconductor light source; and the first coil of the potential device is subjected to the induction of the second coil so as to generate an induction signal which is used for controlling the conduction and the cut-off of the switching device.
Description
Technical field
The utility model relates to a kind of drive system of semiconductor light sources, and more particularly, relates to a kind of drive system of buck semiconductor light sources.
Background technology
Semiconductor light sources (LED) is light source and the display device of third generation semi-conducting material manufacturing, has that power consumption is few, the life-span long, characteristics such as pollution-free, rich color, controllability are strong, is the revolution of lighting source and light industry.Along with the development of LED, increasing LED illuminating product floods the market.The electric drive of LED partly is indispensable part in the LED illuminating product.
Stand in LED market angle, LED lamp terminal price still is higher than conventional bulb and electricity-saving lamp, and price reduction has become the key that enlarges the market acceptance.
Along with the continuous decline of LED particle price, the price ratio of electric drive part is more aobvious important, popularizes in the market the LED driver circuit that uses and mostly adopts IC control, and its major defect is exactly that Costco Wholesale is higher.If without IC control, generally can adopt inverse-excitation type self-excitation concussion circuit (Fly-back), the efficient of this circuit is low, poor stability, applicable output voltage range is narrow.
The utility model content
The purpose of this utility model provides a kind of simple in structure, and the non-constant width of range of application is with low cost mainly for the electric drive circuit in the LED illuminating product.The utility model uses a small amount of components and parts to be combined to form the self-oscillation circuit, in conjunction with the buck circuit, consists of the LED electronic driver.The utility model uses less components and parts to realize the electric drive part of LED, component number and cost have been greatly reduced, the ratio that electric drive is partly accounted in the LED illuminator is significantly dwindled, and it is high to have efficient, the applicable wide characteristics of output voltage range.
The utility model embodiment provides a kind of drive system of semiconductor light sources, and described drive system comprises: potential device, this potential device comprise the first coil and second coil of mutual coupling, and described the second coil is used for receiving input voltage; Switching device is connected in series with the second coil of described potential device, and is used for the energy storage of this second coil of control and releases energy; Output device, be connected with the second coils from parallel connection of coils of described potential device, and be used for to described semiconductor light sources power supply, wherein, the first coil of described potential device is subjected to the induction of the second coil to produce induced signal, is used for controlling conducting and the cut-off of described switching device.
According to the utility model embodiment, described drive system also comprises: starting drive is used for starting described switching device when initially applying input voltage.
According to the utility model embodiment, described switching device comprises switch and at least one discrete component, described at least one discrete component is connected between the control end of described the first coil and described switch, and described induced signal by described at least one discrete component to control described switch.One of ordinary skill in the art should be appreciated that, discrete component is the discrete resistance corresponding with integrated circuit, electric capacity, the components and parts such as inductance.According to the utility model embodiment, described at least one discrete component comprises capacitive element.
According to the utility model embodiment, described at least one discrete component also comprises resistance element, and described resistance element and the series connection of described capacitive element.
According to the utility model embodiment, described starting drive comprises resistance element and the one-way conduction element that is cascaded, and the tie point between described resistance element and the described one-way conduction element is connected with the control end of described switching device.
According to another embodiment of the present utility model, a kind of semiconductor illumination device also is provided, comprising: the semiconductor light sources load; Potential device, this potential device comprise the first coil and second coil of mutual coupling, and described the second coil is used for receiving input voltage; Switching device is connected in series with the second coil of described potential device, and is used for the energy storage of this second coil of control and releases energy; Output device, be connected with the second coils from parallel connection of coils of described potential device, and be used for to described semiconductor light sources load supplying, wherein, the first coil of described potential device is subjected to the induction of the second coil to produce induced signal, is used for controlling conducting and the cut-off of described switching device.
According to below with reference to accompanying drawing to description of the present utility model, other targets of the present utility model and effectiveness will become apparent, and the reader can fully understand the utility model.
Description of drawings
Fig. 1 is the drive system schematic diagram of semiconductor light sources.
Fig. 2 is the semiconductor light sources driving system circuit figure according to the utility model embodiment.
Fig. 3 A is schematic diagram according to the optical semiconductor source driving system of the utility model embodiment the startup stage.
Fig. 3 B is the first energy storage stage of the optical semiconductor source driving system schematic diagram according to the utility model embodiment.
Fig. 3 C is the schematic diagram of releasing the energy stage according to the optical semiconductor source driving system of the utility model embodiment.
Fig. 3 D is the schematic diagram according to the second energy storage stage of optical semiconductor source driving system of the utility model embodiment.
The oscillogram of the voltage and current when Fig. 4 shows according to the optical semiconductor source driving system operation of the utility model embodiment.
In above-mentioned accompanying drawing, same reference numerals identical, the similar or corresponding element of indication or function.
Embodiment
Hereinafter describe specific embodiment of the utility model with reference to graphic in detail by embodiment.
Fig. 1 is the schematic diagram of the drive system of semiconductor light sources described in the utility model.
Among Fig. 1, Vin represents input voltage.This input voltage is DC input voitage, can be the direct voltage behind over commutation, perhaps rectification and filtered direct voltage.I represents starting drive, and II represents potential device, III representation switch device, and IV represents output device, and V represents the semiconductor light sources load.
Described starting drive I is used for when starting (, when input voltage vin initially applies) makes switching device be in conducting state.Described potential device II comprises the first coil and second coil of mutual coupling, and described the second coil is used for receiving input voltage and carrying out energy storage and release energy under the control of described switching device III.Described the first coil is subjected to the induction of described the second coil to produce induced signal, is used for controlling conducting and the cut-off of described switching device III.Described output device is used for according to the energy storage of described the second coil and releases and can differently power to described semiconductor light sources.
Fig. 2 is the driving system circuit figure according to the detailed semiconductor light sources of an embodiment of the present utility model.
Among Fig. 2, starting drive I comprises the first resistance 101 and the first diode 102 that is cascaded.The first end of the first resistance 101 is connected with the first voltage input end, and the second end of the first resistance 101 is connected with the second end of the first diode 102, and the second end of the first diode 102 is connected with the second voltage input.The second voltage input is ground connection directly.One of ordinary skill in the art should be known, and resistance can be substituted by other resistance elements, and diode also can be substituted by other one-way conduction elements (such as triode).
Potential device II comprises the first coil 201 and second coil 202 of mutual coupling.The first coil 201 and the first electric capacity 203 and 204 series connection of the second resistance.The first end of the first coil 201 is connected with the first end of the first electric capacity 203, and the second end of the first electric capacity 203 is connected with the first end of the second resistance 204.The second end ground connection of the first coil 201.The first end of the second coil 202 is connected with the first voltage input end.The first end of the first end of the first coil 201 and the second coil 202 is Same Name of Ends.Described the second coil 202 is connected in series with described switching device, carries out thus energy storage and release energy under the control of described switching device.One of ordinary skill in the art should be known, and electric capacity can be replaced by other elements with capacitive function, and resistance can be replaced by other elements with resistive function.
Switching device III among Fig. 2 comprises triode 300, and it comprises base stage 301, collector electrode 302, and emitter 303.In the present embodiment, emitter 303 is connected with the second voltage input.
Switching device III also can be metal-oxide-semiconductor, and in this case, the grid of metal-oxide-semiconductor is equivalent to the base stage of triode, and source electrode is equivalent to the collector electrode of triode, and drain electrode is equivalent to the emitter of triode.
The second end of the second resistance 204 links to each other with the base stage 301 of triode 300, and links to each other with the second end of the first resistance 101.The second end of the second coil 202 links to each other with the collector electrode 302 of triode 300.
Output device IV comprises the second diode 401 and the second electric capacity 402 that is cascaded, being connected in series and 202 parallel connections of the second coil of described the second diode 401 and the second electric capacity 402.The first end of the second diode 401 is connected with the second end of the second coil 202, and the second end of the second diode 401 is connected with the second end of the second electric capacity 402, and the first end of the second electric capacity 402 is connected with the first voltage input end.In addition, the first end of the second electric capacity 402 is connected with the first end of semiconductor light sources supported V, and the second end of the second electric capacity 402 is connected with the second end of semiconductor light sources supported V.
The semiconductor light sources supported V comprises the semiconductor light sources that one or more links together in many ways, illuminating sources such as LED or OLED.
In conjunction with Fig. 3 A-D, optical semiconductor source driving system operation principle described in the utility model is described as follows:
The startup stage, as shown in Figure 3A, after optical semiconductor source driving system described in the utility model is connected to DC input voitage Vin, Vin carries out discharge generation electric current I 1 by base stage 301 and the emitter 303 of the first resistance 101 and triode 300, makes collector electrode 302 and emitter 303 conductings of triode 300.Vin carries out discharge generation electric current I 2 by collector electrode 302 and the emitter 303 of the second coil 202 and triode 300.After this, optical semiconductor source driving system described in the utility model entered for the first energy storage stage.
The first energy storage stage, shown in Fig. 3 B, I2 is by the second coil 202,202 energy storage of the second coil also produce voltage V2 at its two ends, the first coil 201 is subjected to 202 inductions of the second coil to produce induced electromotive force V1 simultaneously, and V1 carries out discharge generation electric current I 3 by base stage 301 and the emitter 303 of the first electric capacity 203, the second resistance 204 and triode 300.I3 charges to the first electric capacity 203.The first electric capacity 203 two ends produce direction as shown voltage V3.Along with the rising of V3, I3 descends, and thereupon so that triode 300 cut-offs.Yet because the electric current that flows through the second coil 202 can not suddenly change, so this electric current flow to the semiconductor light sources load by the second diode 401, and makes the second coil 202 both end voltage V2 reverse.After this, optical semiconductor source driving system described in the utility model enters releases the energy stage, and the semiconductor light sources supported V begins luminous.
Release the energy stage, shown in Fig. 3 C, the induced electromotive force V1 that the first coil 201 is produced by 202 inductions of the second coil is reverse equally.V1 carries out discharge generation electric current I 4 by the first diode 102, the second resistance 204, the first electric capacity 203.Triode 300 cut-offs.The second coil 202 both end voltage V2 discharge with the semiconductor light sources supported V by the second diode 401, and the second coil 202 is released energy, are that 402 chargings of the second electric capacity produce voltage V5 simultaneously.203 reverse chargings of 4 pairs of the first electric capacity of electric current I produce reverse voltage V4.Drop to when being lower than the second electric capacity 402 both end voltage V5 at the second coil 202 both end voltage V2, stop to release energy.After this, optical semiconductor source driving system described in the utility model entered for the second energy storage stage.This second energy storage stage and described the first energy storage stage are different, and in this second energy storage stage, described semiconductor light sources supported V is luminous.
The second energy storage stage, shown in Fig. 3 D, the second electric capacity 402 both end voltage V5 are by the semiconductor light sources load discharge, base stage 301 and emitter 303 and first coil 201 of the first electric capacity 203 both end voltage V4 by resistance 204, triode 300 discharges, generation current I5 makes collector electrode 302 and emitter 303 conductings of triode 300.Vin carries out discharge generation electric current I 2 by collector electrode 302 and the emitter 303 of the second coil 202 and triode 300.202 energy storage of the second coil produce voltage V2 at its two ends.Next, continue to describe with reference to the potential device II among the figure 3B and switching device III.The first coil 201 is subjected to 202 inductions of the second coil to produce induced electromotive force V1, and V1 carries out discharge generation electric current I 3 by base stage 301 and the emitter 303 of the first electric capacity 203, the second resistance 204 and triode 300.I3 charges to the first electric capacity 203.The first electric capacity 203 two ends produce direction as shown voltage V3.Along with the rising of V3, I3 descends, and thereupon so that triode 300 cut-offs.Yet because the electric current that flows through the second coil 202 can not suddenly change, so this electric current flow to the semiconductor light sources load by the second diode 401, and makes the second coil 202 both end voltage V2 reverse.After this, optical semiconductor source driving system described in the utility model again enters and releases the energy stage.
Then, optical semiconductor source driving system described in the utility model can enter for the second energy storage stage from releasing in the stage again, so circulation.
The below further specifies the working condition of triode 300 in each stage.
As shown in Figure 3A, the startup stage, Vin makes triode 300 conductings and is operated in the amplification region by base stage 301 and the emitter 303 generation current I1 of the first resistance R 1 and triode 300.
Then, shown in Fig. 3 B, in the first energy storage stage, the induced electromotive force V1 on the first coil 201 makes triode 300 enter the saturation region by base stage 301 and the emitter 303 generation current I3 of the first electric capacity 203, the second resistance 204 and triode 300; Along with electric current I 3 is given 203 chargings of the first electric capacity so that the first electric capacity 203 both end voltage V3 raise, electric current I 3 descends, and makes again diode 300 withdraw from the saturation region and enters cut-off region.Yet because the electric current I 2 that flows through the second coil 202 can not suddenly change, so this electric current I 2 flow to the semiconductor light sources load by the second diode 401, and makes the second coil 202 both end voltage V2 reverse.
Next, shown in Fig. 3 C, releasing in the energy stage diode 300 cut-offs, the first coil 201 both end voltage along with the second coil 202 both end voltage oppositely and oppositely, and carry out reverse charging by the second resistance 204 and 102 pairs of the first electric capacity 203 of the first diode.
Then, shown in Fig. 3 D, in the second energy storage stage, the induced electromotive force V1 on the first coil 201 is by base stage 301 and the emitter 303 generation current I3 of the first electric capacity 203, the second resistance 204 and triode 300, make triode 300 again enter the saturation region, the 202 beginning energy storage of the second coil; Then, along with electric current I 3 is given 203 chargings of the first electric capacity so that the first electric capacity 203 both end voltage V3 raise, electric current I 3 descends, and makes again diode 300 withdraw from the saturation region and enters cut-off region.
Next, be circulated again into that release can the stage, the second energy storage stage and release can the stage of so circulating.
The oscillogram of the voltage and current when as shown in Figure 4, showing according to the operation of the optical semiconductor source driving system of the utility model embodiment.It should be noted that the oscillogram the startup stage of in Fig. 4, not illustrating.
At moment t0, Vin carries out the 202 beginning energy storage of discharge generation electric current I 2, the second coils by collector electrode 302 and the emitter 303 of the second coil 202 and triode 300; And 201 inductions of the first coil produce induced electromotive force V1, and V1 carries out discharge generation electric current I 3 by base stage 301 and the emitter 303 of the first electric capacity 203, the second resistance 204 and triode 300, and I3 charges to the first electric capacity 203.
At moment t1, the first electric capacity 203 both end voltage V3 are approximately equal to the induced electromotive force V1 that the first coil 201 produces, I3 reduces to make triode 300 cut-offs, yet can not suddenly change owing to flowing through the electric current I 2 of the second coil 202, therefore the second coil 202 generation current Io, Io flow through the second diode 401 that the semiconductor light sources supported V is begun are luminous, and electric current I o descends gradually, 202 both end voltage V2 are reverse for the second coil, and the second coil 202 begins to release energy.
Next, at moment t2, the second electric capacity 402 both end voltage equal the second coil 202 both end voltage V2, and the second coil 202 stops to release energy and powered to the semiconductor light sources supported V by the second electric capacity 402.On the other hand, base stage 301 and emitter 303 and first coil 201 of the first electric capacity 203 both end voltage V4 by resistance 204, triode 300 discharges, and generation current I5 makes collector electrode 302 and emitter 303 conductings of triode 300; Vin carries out the 202 beginning energy storage of discharge generation electric current I 2, the second coils by collector electrode 302 and the emitter 303 of the second coil 202 and triode 300.
Then, at moment t3, the first electric capacity 203 both end voltage V3 are approximately equal to the induced electromotive force V1 that the first coil 201 produces, I3 reduces to make triode 300 cut-offs, yet owing to the electric current I 2 that flows through the second coil 202 can not be suddenlyd change, so the second coil 202 generation current Io, flowing through the second diode 401, that the semiconductor light sources supported V is begun is luminous, and electric current I o descends gradually, and 202 both end voltage V2 are reverse for the second coil, and the second coil 202 begins to release energy.
Next, since the work sequence of moment t4 repetition t2-t4, namely t4-t6, t6-t8 etc. repeat the work sequence of t2-t4.
Although in the utility model embodiment, adopt NPN type triode to consist of switching device III, yet the utility model is not limited to this, those skilled in the art are easy to expect the syndeton that adopts the positive-negative-positive triode to consist of switching device III and correspondingly change starting drive I, potential device II, switching device III, output device IV, and this variation should be included within the utility model scope.
In addition, those skilled in the art also are easy to expect the syndeton that adopts N-type or P type metal-oxide-semiconductor to consist of switching device and correspondingly change starting drive I, potential device II, switching device III, output device IV, and this variation also should be included within the utility model scope.
Above-described embodiment is exemplary, and does not wish that they limit technical method of the present utility model.Although describe the utility model in detail with reference to preferred embodiment; but be understood by those skilled in the art that; can in the situation of the spirit that does not depart from the utility model technical method and category, revise or be equal to and replace technical method of the present utility model, these modifications and be equal to the protection category that replacement also belongs to the utility model claims.
Claims (10)
1. the drive system of a semiconductor light sources comprises:
Potential device, this potential device comprise the first coil and second coil of mutual coupling, and described the second coil is used for receiving input voltage;
Switching device is connected in series with the second coil of described potential device, and is used for the energy storage of this second coil of control and releases energy;
Output device is connected with the second coils from parallel connection of coils of described potential device, and is used for to described semiconductor light sources power supply,
Wherein, the first coil of described potential device is subjected to the induction of the second coil to produce induced signal, is used for controlling conducting and the cut-off of described switching device.
2. drive system as claimed in claim 1, wherein, when described the second coil is released energy, charged to described output device to described semiconductor light sources power supply and by described the second coil by described the second coil, and when described the second coil energy storage, powered to described semiconductor light sources by this output device.
3. drive system as claimed in claim 1 also comprises: starting drive is used for starting described switching device when initially applying input voltage.
4. drive system as claimed in claim 1, wherein, described switching device comprises switch and at least one discrete component, described at least one discrete component is connected between the control end of described the first coil and described switch, and described induced signal by described at least one discrete component to control described switch.
5. drive system as claimed in claim 4, wherein, described at least one discrete component comprises capacitive element.
6. drive system as claimed in claim 5, described at least one discrete component also comprises resistance element, this resistance element and the series connection of described capacitive element.
7. drive system as claimed in claim 3, described starting drive comprises resistance element and the one-way conduction element that is cascaded, the tie point between described resistance element and the described one-way conduction element is connected with the control end of described switching device.
8. semiconductor illumination device comprises:
The semiconductor light sources load;
Potential device, this potential device comprise the first coil and second coil of mutual coupling, and described the second coil is used for receiving input voltage;
Switching device is connected in series with the second coil of described potential device, and is used for the energy storage of this second coil of control and releases energy;
Output device is connected with the second coils from parallel connection of coils of described potential device, and is used for to described semiconductor light sources load supplying;
Wherein, the first coil of described potential device is subjected to the induction of the second coil to produce induced signal, is used for controlling conducting and the cut-off of described switching device.
9. semiconductor illumination device as claimed in claim 8, wherein, described switching device comprises switch and at least one discrete component, described at least one discrete component is connected between the control end of described the first coil and described switch, and described induced signal by described at least one discrete component to control described switch.
10. semiconductor illumination device as claimed in claim 8 also comprises: starting drive is used for starting described switching device when initially applying input voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220260704 CN202663608U (en) | 2012-06-04 | 2012-06-04 | Driving system for semiconductor light source and semiconductor illuminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220260704 CN202663608U (en) | 2012-06-04 | 2012-06-04 | Driving system for semiconductor light source and semiconductor illuminating device |
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| Publication Number | Publication Date |
|---|---|
| CN202663608U true CN202663608U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220260704 Withdrawn - After Issue CN202663608U (en) | 2012-06-04 | 2012-06-04 | Driving system for semiconductor light source and semiconductor illuminating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103458559A (en) * | 2012-06-04 | 2013-12-18 | 欧普照明股份有限公司 | Drive system of semiconductor light source and semiconductor illumination device |
| CN105359050A (en) * | 2013-04-19 | 2016-02-24 | 皇家飞利浦有限公司 | Self-oscillating resonant converter-based light emitting diode (led) driver |
-
2012
- 2012-06-04 CN CN 201220260704 patent/CN202663608U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103458559A (en) * | 2012-06-04 | 2013-12-18 | 欧普照明股份有限公司 | Drive system of semiconductor light source and semiconductor illumination device |
| CN103458559B (en) * | 2012-06-04 | 2015-04-15 | 欧普照明股份有限公司 | Drive system of semiconductor light source and semiconductor illumination device |
| US9967930B2 (en) | 2012-06-04 | 2018-05-08 | Opple Lighting Co., Ltd. | Drive system of semiconductor light source, and semiconductor lighting device |
| CN105359050A (en) * | 2013-04-19 | 2016-02-24 | 皇家飞利浦有限公司 | Self-oscillating resonant converter-based light emitting diode (led) driver |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20150415 |
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| RGAV | Abandon patent right to avoid regrant |