CN202425163U - Input voltage adaptive circuit for LED (Light Emitting Diode) light source - Google Patents
Input voltage adaptive circuit for LED (Light Emitting Diode) light source Download PDFInfo
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- CN202425163U CN202425163U CN2012200473228U CN201220047322U CN202425163U CN 202425163 U CN202425163 U CN 202425163U CN 2012200473228 U CN2012200473228 U CN 2012200473228U CN 201220047322 U CN201220047322 U CN 201220047322U CN 202425163 U CN202425163 U CN 202425163U
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- led light
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Abstract
The utility model provides an input voltage adaptive circuit for an LED (Light Emitting Diode) light source. The input voltage adaptive circuit is connected with an LED driving module so as to drive an LED light emitter. The input voltage adaptive circuit comprises a reverse connection prevention module, a step-up module, a power input indication module and a step-down module; after an input voltage is stabilized, the input voltage is connected into the LED driving module, and the LED driving module drives the LED light emitter in a certain manner; the reverse connection prevention module is arranged at the input end of the step-up module; and the output end of the step-up module is connected with the power input indication module and the step-down module. With the adoption of the input voltage adaptive circuit, the LED driving module can have a wide voltage input range of 5-26 V, and the circuit is controlled to stably work, so that the input voltage adaptive circuit is applicable to most conventional low-voltage LED light sources.
Description
Technical field
The utility model belongs to the intelligent lighting field, is specifically related to a kind of led light source input voltage adapting circuit.
Background technology
A series of distinct advantages such as energy-saving and environmental protection, long-life, response are fast because of having for led light source, rich color, controllability are good, safe have a good application prospect in fields such as general illumination, Landscape Lighting, automotive lighting, interior decoration, information demonstration and portable electric appts are backlight.
Present stage, common led light source adopted 12V, 24V power supply mostly; Power supply can be provided by civil power conversion or battery; The fluctuation of line voltage or the decline of battery electric quantity make the output of LED driver module produce certain variation usually, and then influence the illuminating effect and the working life of LED luminous element.
The utility model content
In view of this, the utility model provides a kind of led light source input voltage adapting circuit, and this circuit can be so that the LED driver module has the wide range input voltage of 5V～26V, and the control circuit working stability is applicable to most conventional low-voltage LED light source.
To achieve these goals, the technical scheme of the utility model is following:
A kind of led light source input voltage adapting circuit; Connect the LED driver module with the driving LED luminous element; Especially; Said led light source input voltage adapting circuit comprises anti-reverse module, boost module, power supply input indicating module and step-down module, and said anti-reverse module places the input of said boost module, and the output of said boost module connects power supply input indicating module and step-down module.
Preferably, in above-mentioned led light source input voltage adapting circuit, said anti-reverse module is a diode.
Preferably, in above-mentioned led light source input voltage adapting circuit, said diode is a Schottky diode.
Preferably, in above-mentioned led light source input voltage adapting circuit, said power supply input indicating module is made up of light-emitting diode and current-limiting resistance series connection.
Compared with prior art; The led light source input voltage adapting circuit of the utility model; Earlier input voltage is risen to a certain fixed value that is provided with through boost module; And then the output voltage of boost module is reduced to a certain magnitude of voltage that is provided with by the step-down module, and can be so that the LED driver module obtains stable voltage under the situation that the power supply input changes supply with, the control circuit working stability is reliable.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can obtain other accompanying drawing according to these accompanying drawings.
Shown in Figure 1 is the block diagram of led light source input voltage adapting circuit in the utility model specific embodiment;
Shown in Figure 2 is the physical circuit figure of led light source input voltage adapting circuit among Fig. 1.
Embodiment
Carry out clear, intactly description in the face of the technical scheme among the utility model embodiment down, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Shown in Figure 1 is the block diagram of led light source input voltage adapting circuit in the utility model specific embodiment.
Among Fig. 1, the output of led light source input voltage adapting circuit 10 is connected to the input of LED driver module 15, and the output of LED driver module 15 is connected to the input of LED luminous element 16.
The voltage of 10 pairs of inputs of led light source input voltage adapting circuit successively boost with step-down after voltage stabilizing output, LED driver module 15 receives said burning voltages and in a certain way LED luminous element 16 is driven.
Led light source input voltage adapting circuit 10 comprises anti-reverse module 11, boost module 12, power supply input indicating module 14 and step-down module 13; Said anti-reverse module 11 places the input of said boost module 12, and the output of said boost module 12 connects power supply input indicating module 14 and step-down module 13.The anti-reverse module 11 preferred Schottky diodes that adopt.
Shown in Figure 2 is the physical circuit figure of led light source input voltage adapting circuit among Fig. 1.
Step-down module 13 mainly is made up of integrated chip 132, the integrated chip 132 preferred LM2596 that adopt of step-down module 13, and step-down module 13 can be reduced to a certain set point with the output voltage of boost module 12.
The output of boost module 12 connects the input of step-down module 13; The input of boost module 12 is connected with diode; Diode has constituted anti-reverse module 11; The output of boost module 12 also is connected with by the light-emitting diode 141 luminous branch road that 142 series connection constitute with current-limiting resistance, and this illuminating circuit has constituted power supply input indicating module 14; The feedback end of step-down module 13 is an adjustable resistance 131, and an end of said adjustable resistance 131 is through resistance 132 ground connection, and the other end is through electric capacity 133 ground connection.Through changing the resistance of adjustable resistance 131, the output voltage of scalable step-down module 13 is to satisfy the practical application needs of different size LED luminous element.
The led light source input voltage adapting circuit of the utility model; Earlier input voltage is risen to a certain fixed value that is provided with through boost module; And then the output voltage of boost module is reduced to a certain magnitude of voltage that is provided with by the step-down module; Can be so that the LED driver module obtains stable voltage at the power supply input range of 5V～26V to be supplied with, thus the control circuit working stability guaranteed, be applicable to most conventional low-voltage LED light source.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. led light source input voltage adapting circuit; Connect the LED driver module with the driving LED luminous element; It is characterized in that: said led light source input voltage adapting circuit comprises anti-reverse module, boost module, power supply input indicating module and step-down module; Said anti-reverse module places the input of said boost module, and the output of said boost module connects power supply input indicating module and step-down module.
2. led light source input voltage adapting circuit according to claim 1 is characterized in that: said anti-reverse module is a diode.
3. led light source input voltage adapting circuit according to claim 2 is characterized in that: said diode is a Schottky diode.
4. led light source input voltage adapting circuit according to claim 1 is characterized in that: said power supply input indicating module is made up of light-emitting diode and current-limiting resistance series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200473228U CN202425163U (en) | 2012-02-14 | 2012-02-14 | Input voltage adaptive circuit for LED (Light Emitting Diode) light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200473228U CN202425163U (en) | 2012-02-14 | 2012-02-14 | Input voltage adaptive circuit for LED (Light Emitting Diode) light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202425163U true CN202425163U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200473228U Expired - Fee Related CN202425163U (en) | 2012-02-14 | 2012-02-14 | Input voltage adaptive circuit for LED (Light Emitting Diode) light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202425163U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103889103A (en) * | 2013-02-05 | 2014-06-25 | 洛阳频瑞电子有限公司 | Unit continuous lighting system |
| CN104010407A (en) * | 2013-02-27 | 2014-08-27 | 深圳市海洋王照明工程有限公司 | Non-isolation type switch power source and illumination lamp fixture |
| CN104184204A (en) * | 2014-08-18 | 2014-12-03 | 无锡中科智联科技研发中心有限公司 | Solar two-way power supply system for wireless sensor network (WSN) gateway |
| CN104661402A (en) * | 2013-01-31 | 2015-05-27 | 四川新力光源股份有限公司 | LED module serving as light source of lighting device |
-
2012
- 2012-02-14 CN CN2012200473228U patent/CN202425163U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104661402A (en) * | 2013-01-31 | 2015-05-27 | 四川新力光源股份有限公司 | LED module serving as light source of lighting device |
| CN104661402B (en) * | 2013-01-31 | 2017-03-29 | 四川新力光源股份有限公司 | A kind of LED module as light source of illumination device |
| CN103889103A (en) * | 2013-02-05 | 2014-06-25 | 洛阳频瑞电子有限公司 | Unit continuous lighting system |
| CN104010407A (en) * | 2013-02-27 | 2014-08-27 | 深圳市海洋王照明工程有限公司 | Non-isolation type switch power source and illumination lamp fixture |
| CN104184204A (en) * | 2014-08-18 | 2014-12-03 | 无锡中科智联科技研发中心有限公司 | Solar two-way power supply system for wireless sensor network (WSN) gateway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20180214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |