CN103096603A - Actuator of light-emitting diode (LED) for lighting - Google Patents
Actuator of light-emitting diode (LED) for lighting Download PDFInfo
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- CN103096603A CN103096603A CN2013100356543A CN201310035654A CN103096603A CN 103096603 A CN103096603 A CN 103096603A CN 2013100356543 A CN2013100356543 A CN 2013100356543A CN 201310035654 A CN201310035654 A CN 201310035654A CN 103096603 A CN103096603 A CN 103096603A
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- resistance
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- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses an actuator of a light-emitting diode (LED) for lighting. A resistor is arranged on a cathode of an output circuit of a main circuit of the actuator of the LED, a field-effect tube is arranged at each of two ends of the resistor, when surge currents exist, switching characteristic of the field-effect tube is utilized, the field-effect tube is in a disconnected state, the resistor can restrain the surge currents, and after the surge currents are gone, combined action of a plurality of electric components is utilized to enable the field-effect tube to be connected, and therefore the technical problem that power consumption is large due to the fact that the resistor works with electricity in a long time can be avoided.
Description
Technical field
The present invention relates to field of semiconductor illumination, in particular a kind of illuminating LED driver.
Background technology
Control to surge current in existing illuminating LED driver is all to adopt additional thermistor in drive circuit, but because the resistance of thermistor is generally all larger, the long-term work meeting produces higher heat and larger power loss under "on" position, cause the LED driver conversion efficiency to reduce, can't reach energy-conservation purpose.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of illuminating LED driver, the technical problem that heat is high and power loss is large that exists when controlling surge current with thermistor to solve in prior art.
Technical scheme of the present invention is as follows:
A kind of illuminating LED driver wherein, comprises that LED driver main circuit and surge electric power suppress circuit, and described surge current suppression circuit comprises field effect transistor, the first resistance, the 3rd resistance, the 4th resistance, the second diode, the first electric capacity and the second electric capacity;
Described the first resistance string is associated on the negative pole of output circuit of LED driver main circuit;
The drain electrode of described field effect transistor and source electrode are connected to input and the output of the first resistance;
Described the second diode, the 4th resistance series connection, the input of the second diode are connected on the negative pole of output circuit of LED driver main circuit, the output head grounding of the 4th resistance;
The input of described the 3rd resistance is connected to the grid of field effect transistor, and the output of the 3rd resistance is connected between the second diode and the 4th resistance;
The positive pole of described the first electric capacity is connected to the output of the 3rd resistance, and the negative pole of the first electric capacity connects the output of the 4th resistance;
The two ends of described the second electric capacity are connected to the positive pole of output circuit of LED driver main circuit and the input of the second diode.
Described illuminating LED driver wherein, also comprises the second resistance, and the input of described the second resistance is connected to the grid of field effect transistor, and output is connected on the negative pole of output circuit of LED driver main circuit.
Described illuminating LED driver wherein, also comprises the first diode and the 5th resistance between the input of the negative pole of the output circuit that is connected on the LED driver main circuit and the second diode.
The present invention is by arranging a resistance on the negative pole of the output circuit of the main circuit of LED driver, the two ends of this resistance arrange a field effect transistor, when having surge current, utilize the switching characteristic of field effect transistor under the support of peripheral circuit, field effect transistor is in off-state, this resistance can play the effect of surge current suppression, after surge current is decorporated, utilize the acting in conjunction of a plurality of electrical components to make the field effect transistor conducting, from and avoided the large technical problem of long-term energising operating power consumption of above-mentioned resistance.
Description of drawings
Fig. 1 is the circuit diagram of illuminating LED driver in the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, clear and definite, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.
As shown in the circuit diagram of illuminating LED driver in Fig. 1 the present invention, comprise LED driver main circuit and surge current control circuit, surge control circuit comprises field effect transistor Q1, the first resistance R 8, the second resistance R 9, the 3rd resistance R 10, the 4th resistance R 11, the 5th resistance R 12, the first diode D4, the second diode D5, the first capacitor C 8, the second capacitor C 9.The first resistance R 8 is connected on the negative pole of output circuit of LED driver main circuit; The drain electrode of field effect transistor Q1 and source electrode are connected to input and the output of the first resistance R 8; The first diode D4, the 5th resistance R 12, the second diode D5, the 4th resistance R 11 are connected successively, and the input of the first diode D4 is connected on the negative pole of output circuit of LED driver main circuit, the output head grounding of the 4th resistance R 11; The input of the second resistance R 9 and the 3rd resistance R 10 is connected in parallel on the grid of field effect transistor Q1, the output of the second resistance R 9 is connected on the negative pole of output circuit of LED driver main circuit, and the output of the 3rd resistance R 10 is connected between the second diode D5 and the 4th resistance R 11; The positive pole of the first capacitor C 8 is connected to the output of the 3rd resistance R 10, and the negative pole of the first capacitor C 8 connects the output of the 4th resistance R 11; The two ends of the second capacitor C 9 are connected to the positive pole of output circuit of LED driver main circuit and the output of the 5th resistance R 12.
In the invention described above, the operation principle of the circuit of illuminating LED driver is: by opening or output produces one when hot-swappable during than high surge current when LED driver, utilize the resistance of the first resistance R 8 that it is absorbed, make surge current control within the acceptable range (but the size of surge current suppression depends on the resistance size of the first resistance R 8), the span of the first resistance R 8 is 1 ~ 100 Ω.By the amount of capacity of the first capacitor C 8 is set, control the operating time of the first resistance R 8, the capacity span of the first capacitor C 8 is 1 ~ 100uF, the operating time length of the first resistance R 8 and the amount of capacity of the first capacitor C 8 are inversely proportional to.Voltage of the second capacitor C 9 couplings, through the second diode D5 rectification, the first capacitor C 8 is charged, after being full of electricity, the first capacitor C 8 produces a potential difference between R10 and R11, make field effect transistor Q1 conducting enter normal operating conditions, because internal resistance after the Q1 conducting makes little (being almost 0 Europe), make most electric currents flow through from Q1, and resistance R 8 only have Weak current to flow through.In circuit provided by the invention, the second resistance R 9 is protective resistance, and the first diode D4 and the 5th resistance R 12 also are the protection components and parts.Because the resistance of Q1 is minimum, so the power loss of its generation is also very little.Can be not influential to the LED driver conversion efficiency.And avoided because the R8 resistance is larger, the work meeting of switching on for a long time produces the problem of larger loss.
Can find out from above-described embodiment, the present invention is by arranging a resistance on the negative pole of the output circuit of the main circuit of LED driver, the two ends of this resistance arrange a field effect transistor, when having surge current, utilize the switching characteristic of field effect transistor, field effect transistor is in off-state, this resistance can play the effect of surge current suppression, after surge current is decorporated, utilize the acting in conjunction of a plurality of electrical components to make the field effect transistor conducting, from and avoided the large technical problem of long-term energising operating power consumption of above-mentioned resistance.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or conversion, and all these improve and conversion all should belong to the protection range of claims of the present invention.
Claims (3)
1. illuminating LED driver, it is characterized in that, comprise that LED driver main circuit and surge electric power suppress circuit, described surge current suppression circuit comprises field effect transistor, the first resistance, the 3rd resistance, the 4th resistance, the second diode, the first electric capacity and the second electric capacity;
Described the first resistance string is associated on the negative pole of output circuit of LED driver main circuit;
The drain electrode of described field effect transistor and source electrode are connected to input and the output of the first resistance;
Described the second diode, the 4th resistance series connection, the input of the second diode are connected on the negative pole of output circuit of LED driver main circuit, the output head grounding of the 4th resistance;
The input of described the 3rd resistance is connected to the grid of field effect transistor, and the output of the 3rd resistance is connected between the second diode and the 4th resistance;
The positive pole of described the first electric capacity is connected to the output of the 3rd resistance, and the negative pole of the first electric capacity connects the output of the 4th resistance;
The two ends of described the second electric capacity are connected to the positive pole of output circuit of LED driver main circuit and the input of the second diode.
2. illuminating LED driver according to claim 1, is characterized in that, also comprises the second resistance, and the input of described the second resistance is connected to the grid of field effect transistor, and output is connected on the negative pole of output circuit of LED driver main circuit.
3. illuminating LED driver according to claim 1, is characterized in that, also comprises the first diode and the 5th resistance between the input of the negative pole of the output circuit that is connected on the LED driver main circuit and the second diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310035654.3A CN103096603B (en) | 2013-01-30 | 2013-01-30 | A kind of illuminating LED driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310035654.3A CN103096603B (en) | 2013-01-30 | 2013-01-30 | A kind of illuminating LED driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103096603A true CN103096603A (en) | 2013-05-08 |
| CN103096603B CN103096603B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310035654.3A Active CN103096603B (en) | 2013-01-30 | 2013-01-30 | A kind of illuminating LED driver |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079546A (en) * | 2006-05-26 | 2007-11-28 | 鸿富锦精密工业（深圳）有限公司 | Surge restraint circuit |
| KR20070119207A (en) * | 2006-06-14 | 2007-12-20 | 엘지이노텍 주식회사 | Power supply |
| CN102723703A (en) * | 2011-03-29 | 2012-10-10 | 海洋王照明科技股份有限公司 | Surge current suppression circuit and lighting fixture |
| CN102791054A (en) * | 2011-04-22 | 2012-11-21 | 昂宝电子（上海）有限公司 | System and method for dimming control with capacitive load |
-
2013
- 2013-01-30 CN CN201310035654.3A patent/CN103096603B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079546A (en) * | 2006-05-26 | 2007-11-28 | 鸿富锦精密工业（深圳）有限公司 | Surge restraint circuit |
| KR20070119207A (en) * | 2006-06-14 | 2007-12-20 | 엘지이노텍 주식회사 | Power supply |
| CN102723703A (en) * | 2011-03-29 | 2012-10-10 | 海洋王照明科技股份有限公司 | Surge current suppression circuit and lighting fixture |
| CN102791054A (en) * | 2011-04-22 | 2012-11-21 | 昂宝电子（上海）有限公司 | System and method for dimming control with capacitive load |
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| CN103096603B (en) | 2015-10-21 |
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