CN103079317A - LED (Light Emitting Diode) driver capable of suppressing interference with car radio frequency bands - Google Patents
LED (Light Emitting Diode) driver capable of suppressing interference with car radio frequency bands Download PDFInfo
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- CN103079317A CN103079317A CN2013100123702A CN201310012370A CN103079317A CN 103079317 A CN103079317 A CN 103079317A CN 2013100123702 A CN2013100123702 A CN 2013100123702A CN 201310012370 A CN201310012370 A CN 201310012370A CN 103079317 A CN103079317 A CN 103079317A
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- control circuit
- frequency noise
- noise control
- led driver
- constant current
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Abstract
The invention discloses an LED (Light Emitting Diode) driver capable of suppressing interference with car radio frequency bands, which comprises a first high-frequency noise control circuit, an LED driver constant voltage/constant current control circuit and a second high-frequency noise control circuit, wherein the first high-frequency noise control circuit and the second high-frequency noise control circuit are respectively arranged on an input end and an output end of the LED driver constant voltage/constant current control circuit. By adopting the LED driver, high-frequency noise generated when the LED driver is operated can be effectively filtered, so that a radio can be normally heard at any frequency band from 88 to 108 MHz, and the using effect of the car radio can be effectively improved.
Description
Technical field
The present invention relates to a kind of led driver, in particular a kind of led driver that can suppress the auto radio band interference.
Background technology
The LED lighting technology more and more has been widely used the automotive lighting field, but because led driver can produce high-frequency noise when work, after LED is lit, the high frequency noise of its generation will interfere with broadcast receiver (especially broadcast receiver is in the situation of FM 88 ~ 108MHZ) to the reception of signal, wireless certain band frequency can't normally be received, and then have influence on the occupant to wireless use.
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 led driver that can suppress the auto radio band interference, produce high frequency noise to the technical problem of the reception of auto radio band frequency signal to solve the led driver that exists in the above-mentioned prior art.
Technical scheme of the present invention is as follows:
A kind of led driver that can suppress the auto radio band interference, wherein, comprise the first high-frequency noise control circuit, led driver constant voltage/constant current control circuit and the second high-frequency noise control circuit, described the first high-frequency noise control circuit and the second high-frequency noise control circuit are separately positioned on input and the output of led driver constant voltage/constant current control circuit.
The described led driver that can suppress the auto radio band interference, wherein, described the first high-frequency noise control circuit and the second high-frequency noise control circuit comprise respectively a common mode inductance and a ceramic disc capacitor, the common mode inductance of described the first high-frequency noise control circuit and the second high-frequency noise control circuit and ceramic disc capacitor are connected in parallel on respectively between the positive and negative electrode of the input of described led driver constant voltage/constant current control circuit and output, and described ceramic disc capacitor is arranged on nearly led driver constant voltage/constant current control circuit side.
The described led driver that can suppress the auto radio band interference, wherein, the inductance value of the common mode inductance of described the first high-frequency noise control circuit and the second high-frequency noise control circuit is set to 100uH ~ 800 uH; The capacity setting of the ceramic disc capacitor of described the first high-frequency noise control circuit and the second high-frequency noise control circuit is 0.001uF ~ 1uF.
The present invention is by setting up the high frequency noise control circuit at the two ends of led driver constant voltage/constant current control circuit, the high-frequency noise that can effectively led driver be produced when working filters out, so that broadcast receiver can both normally be listened under any frequency range of FM 88 ~ 108MHZ.Can effectively improve the result of use of vehicle-mounted radio.
Description of drawings
Fig. 1 is the circuit structure diagram that can suppress among the present invention the led driver of auto radio band interference.
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.
Shown in the circuit structure diagram of Fig. 1 led driver provided by the invention, this circuit specifically comprises three circuit: the first high-frequency noise control circuit, led driver constant voltage/constant current control circuit, the second high-frequency noise control circuit.The first high-frequency noise control circuit is arranged on the input of led driver constant voltage/constant current control circuit, and the second high-frequency noise control circuit is arranged on the output of led driver constant voltage/constant current control circuit.The first high-frequency noise control circuit comprises the first common mode inductance LF2 and the first ceramic disc capacitor C3, the first common mode inductance LF2 and the first ceramic disc capacitor C3 are connected in parallel between the both positive and negative polarity of input of led driver constant voltage/constant current control circuit, and wherein the first ceramic disc capacitor C3 is arranged on by led driver constant voltage/constant current control circuit side; The second high-frequency noise control circuit comprises the second common mode inductance LF1 and the second ceramic disc capacitor C2, the second common mode inductance LF1 and the second ceramic disc capacitor C2 are connected in parallel between the positive and negative electrode of output of led driver constant voltage/constant current control circuit, and the second ceramic disc capacitor C2 is arranged on by led driver constant voltage/constant current control circuit side.
The first high-frequency noise control circuit and the second high-frequency noise control circuit can effectively suppress by connecing the high-frequency noise of LED load end through rational parameter cooperation.Design parameter is configured to: the second common mode inductance LF1 and the first common mode inductance LF2 adopt the high magnetic conductivity ferrite magnetic core by Double-wire parallel wound 6 ~ 10 circle modes, inductance value is controlled at 100uH ~ 800 uH, and the capacity of the second ceramic disc capacitor C2 and the first ceramic disc capacitor C3 should be controlled between 0.001uF ~ 1uF simultaneously.
Technical scheme provided by the invention can effectively produce led driver when working high-frequency noise filters out, so that broadcast receiver can both normally be listened under any frequency range of FM 88 ~ 108MHZ.Can effectively improve the result of use of vehicle-mounted radio.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion, for example: can increase a ceramic disc capacitor by the ac/dc voltage input end at LF2 according to the actual requirements, capacity should be controlled between 0. 001uF ~ 1uF, to promote the inhibition to noise.All these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (3)
1. the led driver that can suppress the auto radio band interference is characterized in that, comprises the first high-frequency noise control circuit, led driver constant voltage/constant current control circuit and the second high-frequency noise control circuit; Described the first high-frequency noise control circuit and the second high-frequency noise control circuit are separately positioned on input and the output of led driver constant voltage/constant current control circuit.
2. energy according to claim 1 suppresses the led driver to the auto radio band interference, it is characterized in that, described the first high-frequency noise control circuit and the second high-frequency noise control circuit comprise respectively a common mode inductance and a ceramic disc capacitor, the common mode inductance of described the first high-frequency noise control circuit and the second high-frequency noise control circuit and ceramic disc capacitor are connected in parallel on respectively between the positive and negative electrode of the input of described led driver constant voltage/constant current control circuit and output, and described ceramic disc capacitor is arranged on nearly led driver constant voltage/constant current control circuit side.
3. the led driver that can suppress the auto radio band interference according to claim 2 is characterized in that the inductance value of the common mode inductance of described the first high-frequency noise control circuit and the second high-frequency noise control circuit is set to 100uH ~ 800 uH; The capacity setting of the ceramic disc capacitor of described the first high-frequency noise control circuit and the second high-frequency noise control circuit is 0.001uF ~ 1uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310012370.2A CN103079317B (en) | 2013-01-14 | 2013-01-14 | A kind of LED driver that can suppress auto radio band interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310012370.2A CN103079317B (en) | 2013-01-14 | 2013-01-14 | A kind of LED driver that can suppress auto radio band interference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103079317A true CN103079317A (en) | 2013-05-01 |
| CN103079317B CN103079317B (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310012370.2A Active CN103079317B (en) | 2013-01-14 | 2013-01-14 | A kind of LED driver that can suppress auto radio band interference |
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| CN (1) | CN103079317B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364524A (en) * | 2008-08-14 | 2009-02-11 | 伍拓山 | Straight tube type energy saving tube |
| CN101534596A (en) * | 2009-04-20 | 2009-09-16 | 永磁电子（东莞）有限公司 | Filter circuit, electrodeless lamp ballast and electrodeless lamp provided with filter circuit |
| CN101636021A (en) * | 2008-07-25 | 2010-01-27 | 深圳市海洋王照明科技股份有限公司 | LED constant current driving circuit |
| CN101707435A (en) * | 2009-05-13 | 2010-05-12 | 海洋王照明科技股份有限公司 | EMI filter circuit and LED power supply driving circuit using same |
| CN102088812A (en) * | 2011-03-11 | 2011-06-08 | 苏州卓能微电子技术有限公司 | Power supply drive module device for LED (light-emitting diode) general illumination |
| KR101052905B1 (en) * | 2009-05-22 | 2011-07-29 | 주식회사 세종엔진 | Power supply |
| CN203072215U (en) * | 2013-01-14 | 2013-07-17 | 广东新昇电业科技股份有限公司 | LED driver capable of inhibiting interference on car radio frequency ranges |
-
2013
- 2013-01-14 CN CN201310012370.2A patent/CN103079317B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101636021A (en) * | 2008-07-25 | 2010-01-27 | 深圳市海洋王照明科技股份有限公司 | LED constant current driving circuit |
| CN101364524A (en) * | 2008-08-14 | 2009-02-11 | 伍拓山 | Straight tube type energy saving tube |
| CN101534596A (en) * | 2009-04-20 | 2009-09-16 | 永磁电子（东莞）有限公司 | Filter circuit, electrodeless lamp ballast and electrodeless lamp provided with filter circuit |
| CN101707435A (en) * | 2009-05-13 | 2010-05-12 | 海洋王照明科技股份有限公司 | EMI filter circuit and LED power supply driving circuit using same |
| KR101052905B1 (en) * | 2009-05-22 | 2011-07-29 | 주식회사 세종엔진 | Power supply |
| CN102088812A (en) * | 2011-03-11 | 2011-06-08 | 苏州卓能微电子技术有限公司 | Power supply drive module device for LED (light-emitting diode) general illumination |
| CN203072215U (en) * | 2013-01-14 | 2013-07-17 | 广东新昇电业科技股份有限公司 | LED driver capable of inhibiting interference on car radio frequency ranges |
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| Publication number | Publication date |
|---|---|
| CN103079317B (en) | 2016-07-06 |
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