CN217902273U - Two-wire integrated control circuit - Google Patents
Two-wire integrated control circuit Download PDFInfo
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- CN217902273U CN217902273U CN202220740473.5U CN202220740473U CN217902273U CN 217902273 U CN217902273 U CN 217902273U CN 202220740473 U CN202220740473 U CN 202220740473U CN 217902273 U CN217902273 U CN 217902273U
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Abstract
The utility model discloses a two-wire integrated control circuit, which comprises a main control chip, a PWM signal unit, a LED light source module and a power supply unit; adopt the main control chip and the single power supply unit of integrated form, main control chip can make main control chip's first output and second output high-low level in turn through the control signal of input PWM signal unit to drive LED light source module work, do not need two half-bridge chips and need not step down the power supply or supply power alone for two half-bridge chips, also need not 4 independent power output MOS pipes, simple structure, easy to carry out.
Description
Technical Field
The utility model relates to a LED drive control field, especially a two line integrated control circuit.
Background
At present, the existing household lighting lamp generally adopts an energy-saving LED lamp, a drive control circuit of the LED lamp generally adopts two special half-bridge drive chips to carry a peripheral circuit or adopts 4 independent MOS tubes to form a full-bridge control circuit, and the half-bridge drive chips generally need to step down the voltage of a power supply unit to 12V or independently supply power to the power supply unit, so that the circuit is complex, the elements are dense, and the implementation is not easy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a simple structure's two line integrated control circuit.
According to the utility model discloses two line integrated control circuit, include: the main control chip comprises a first input end, a second input end, a first output end and a second output end; the PWM signal unit is used for generating a PWM control signal and comprises a first signal end and a second signal end, the first signal end of the PWM signal unit is electrically connected with the first input end of the main control chip, the second signal end of the PWM signal unit is electrically connected with the second input end of the main control chip, the level of the first signal end of the PWM signal unit is opposite to the level of the second signal end of the PWM signal unit, so that the level of the first output end of the main control chip is opposite to the level of the second output end of the main control chip and changes alternately along with the change of the level of the first signal end of the PWM signal unit and the level of the second signal end of the PWM signal unit; the LED light source module comprises a first driving end and a second driving end, the first output end of the main control chip is electrically connected with the first driving end of the LED light source module, and the second output end of the main control chip is electrically connected with the second driving end of the LED light source module; and the power supply unit is electrically connected with the main control chip and the PWM signal unit respectively.
According to the utility model discloses two line integrated control circuit has following beneficial effect at least: adopt the main control chip and the single power supply unit of integrated form, main control chip can make main control chip's first output and second output high-low level in turn through the control signal of input PWM signal unit to drive LED light source module work, do not need two half-bridge chips and need not step down the power supply or supply power alone for two half-bridge chips, also need not 4 independent power output MOS pipes, simple structure, easy to carry out.
According to the utility model discloses two line integrated control circuits, including the filtering unit, the filtering unit's input with the power supply unit electricity is connected, the filtering unit's output with the main control chip electricity is connected, and to the power supply unit filtering, the stability and the reliability of assurance circuit.
According to the utility model discloses two line integrated control circuit, the filtering unit includes electric capacity C1 and electric capacity C2, and electric capacity C1 and electric capacity C2 are parallelly connected, and simple structure is convenient for implement.
According to the utility model discloses two line integrated control circuit, including the high frequency absorption unit, the high frequency absorption unit includes electric capacity C3, electric capacity C4, resistance R1 and diode D1, and resistance R1 establishes ties with electric capacity C3 and forms RC high frequency absorption circuit, RC high frequency absorption circuit is parallelly connected with diode D1 and diode D1's negative pole is connected with electric capacity C4 electricity, and diode D1 carries out half-wave rectification filtering with electric capacity C4, further absorbs the high frequency spike voltage among the circuit, and simple structure is convenient for implement.
According to the utility model discloses two line integrated control circuit, LED light source module includes polarity opposite and parallelly connected first LED banks and second LED banks, and two banks twinkle in turn according to input signal's change.
According to the utility model discloses two line integrated control circuit, first LED banks is white light source, second LED banks is warm white light source, through adjusting input signal's the adjustable whole LED light source module's of duty cycle luminous luminance and colour temperature for warm white light source.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a block circuit diagram of a two-wire integrated control circuit according to an embodiment of the present invention;
fig. 2 is a circuit structure diagram of a two-wire integrated control circuit according to an embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, the preferred embodiments of which are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can visually and vividly understand each technical feature and the whole technical solution of the present invention, but it cannot be understood as a limitation to the scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of meanings are one or more, a plurality of meanings are two or more, and the terms greater than, smaller than, exceeding, etc. are understood as excluding the number, and the terms greater than, lower than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Referring to fig. 1 and 2, a two-wire integrated control circuit according to an embodiment of the present invention includes a main control chip 100, a PWM signal unit 200, an LED light source module 300, and a power supply unit, wherein the main control chip 100 includes a first input end, a second input end, a first output end, and a second output end; the PWM signal unit 200 is configured to generate a PWM control signal, and includes a first signal terminal and a second signal terminal, the first signal terminal of the PWM signal unit 200 is electrically connected to the first input terminal of the main control chip 100, and the second signal terminal of the PWM signal unit 200 is electrically connected to the second input terminal of the main control chip 100, wherein a level of the first signal terminal of the PWM signal unit 200 is opposite to a level of the second signal terminal of the PWM signal unit 200, such that a level of the first output terminal of the main control chip 100 is opposite to a level of the second output terminal of the main control chip 100 and is alternately changed along with a change of the level of the first signal terminal of the PWM signal unit 200 and the level of the second signal terminal of the PWM signal unit 200; the LED light source module 300 includes a first driving end and a second driving end, the first output end of the main control chip 100 is electrically connected to the first driving end of the LED light source module 300, and the second output end of the main control chip 100 is electrically connected to the second driving end of the LED light source module 300; the power supply unit is electrically connected to the main control chip 100 and the PWM signal unit 200, respectively. IN some embodiments, the main control chip is a DRV8872 chip, a first input terminal of the DRV8872 chip is an IN1 pin, a second input terminal is an IN2 pin, a first output terminal is an OUT1 pin, and a second output terminal is an OUT2 pin, the PWM signal unit 200 may be a PWM chip capable of generating a PWM signal, when the IN1 pin detects a high level, the OUT1 pin outputs a high level, and the OUT2 pin outputs a low level; when the pin IN2 detects a high level, the pin OUT1 outputs a low level, and the pin OUT2 outputs a high level, which are sequentially and cyclically turned on alternately to drive the LED light source module 300 to work. In some embodiments, the power supply unit is supplied with 36V dc power. Adopt the main control chip 100 and the single power supply unit of integrated form in this circuit, main control chip 100 can make the first output and the second output of main control chip 100 export high-low level in turn through the control signal of input PWM signal unit to drive LED light source module work, do not need two half-bridge chips and need not for two half-bridge chips step-down power supply or independent power supply, also need not 4 independent power output MOS pipes, simple structure, easy implementation.
In some embodiments, the power supply circuit further includes a filtering unit 400, an input end of the filtering unit 400 is electrically connected to the power supply unit, and an output end of the filtering unit is electrically connected to the main control chip 100, so as to filter the power supply unit, thereby ensuring stability and reliability of the circuit.
In some embodiments, the filtering unit 400 includes a capacitor C1 and a capacitor C2, and the capacitor C1 and the capacitor C2 are connected in parallel, so that the structure is simple and the implementation is convenient.
In some embodiments, the high-frequency absorption unit 500 is included, the high-frequency absorption unit 500 includes a capacitor C3, a capacitor C4, a resistor R1 and a diode D1, the resistor R1 is connected in series with the capacitor C3 to form an RC high-frequency absorption circuit, the RC high-frequency absorption circuit is connected in parallel with the diode D1, a cathode of the diode D1 is electrically connected with the capacitor C4, the diode D1 and the capacitor C4 perform half-wave rectification filtering, and further high-frequency spike voltage in the circuit is absorbed, the structure is simple, and the implementation is convenient. In some embodiments, the device further includes a resistor R2 connected in parallel with the capacitor C4, and the resistor R2 and the capacitor C4 form a discharge loop, so that the voltage across the capacitor C4 is prevented from being too high.
In some embodiments, the LED light source module 300 includes a first LED lamp set and a second LED lamp set that have opposite polarities and are connected in parallel, and the two lamp sets alternately flash according to a change of an input signal, as shown in fig. 2, in some embodiments, the first LED lamp set includes LED1 and LED2 connected in series, the second LED lamp set includes LED3 and LED4 connected in series, a first output terminal of the main control chip 100 is electrically connected to an anode of LED1 and a cathode of LED4, respectively, and a second output terminal of the main control chip 100 is electrically connected to a cathode of LED2 and an anode of LED3, respectively.
In some embodiments, the first LED lamp set is a white light source, the second LED lamp set is a warm white light source, and the brightness and color temperature of the whole LED light source module can be adjusted by adjusting the duty ratio of the input signal; in some embodiments, the first LED lamp group and the second LED lamp group are different color light sources, and the color of the whole LED light source module can be adjusted by adjusting the duty ratio of the input signal.
It is readily understood by those skilled in the art that the above-described preferred modes can be freely combined and superimposed without conflict.
The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct or indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (6)
1. A two-wire integrated control circuit, comprising:
the main control chip (100) comprises a first input end, a second input end, a first output end and a second output end;
the PWM signal unit (200) is used for generating a PWM control signal and comprises a first signal terminal and a second signal terminal, the first signal terminal of the PWM signal unit (200) is electrically connected with a first input terminal of the main control chip (100), the second signal terminal of the PWM signal unit (200) is electrically connected with a second input terminal of the main control chip (100), wherein the level of the first signal terminal of the PWM signal unit (200) is opposite to the level of the second signal terminal of the PWM signal unit (200), so that the level of the first output terminal of the main control chip is opposite to the level of the second output terminal of the main control chip and is alternatively changed along with the change of the level of the first signal terminal of the PWM signal unit (200) and the level of the second signal terminal of the PWM signal unit (200);
the LED light source module (300) comprises a first driving end and a second driving end, the first output end of the main control chip (100) is electrically connected with the first driving end of the LED light source module (300), and the second output end of the main control chip (100) is electrically connected with the second driving end of the LED light source module (300);
and the power supply unit is respectively and electrically connected with the main control chip (100) and the PWM signal unit (200).
2. The two-wire integrated control circuit of claim 1, wherein: the intelligent power supply device comprises a filtering unit (400), wherein the input end of the filtering unit (400) is electrically connected with a power supply unit, and the output end of the filtering unit (400) is electrically connected with a main control chip (100).
3. The two-wire integrated control circuit of claim 2, wherein: the filtering unit (400) comprises a capacitor C1 and a capacitor C2, and the capacitor C1 is connected with the capacitor C2 in parallel.
4. The two-wire integrated control circuit of claim 1, wherein: the high-frequency absorption circuit comprises a high-frequency absorption unit (500), wherein the high-frequency absorption unit (500) comprises a capacitor C3, a capacitor C4, a resistor R1 and a diode D1, the resistor R1 is connected with the capacitor C3 in series to form an RC high-frequency absorption circuit, the RC high-frequency absorption circuit is connected with the diode D1 in parallel, and the negative electrode of the diode D1 is electrically connected with the capacitor C4.
5. The two-wire integrated control circuit of claim 1, wherein: the LED light source module comprises a first LED lamp group and a second LED lamp group which are opposite in polarity and connected in parallel.
6. The two-wire integrated control circuit of claim 5, wherein: the first LED lamp group is a white light source, and the second LED lamp group is a warm white light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220740473.5U CN217902273U (en) | 2022-03-31 | 2022-03-31 | Two-wire integrated control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220740473.5U CN217902273U (en) | 2022-03-31 | 2022-03-31 | Two-wire integrated control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217902273U true CN217902273U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220740473.5U Active CN217902273U (en) | 2022-03-31 | 2022-03-31 | Two-wire integrated control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217902273U (en) |
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2022
- 2022-03-31 CN CN202220740473.5U patent/CN217902273U/en active Active
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Address after: 528400 One of the third floor, No.37 Haiwei Road, Liexiyi Community, Xiaolan, Zhongshan City, Guangdong Province Patentee after: ZHONGSHAN ZHONGAI ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 528400 one of the third floor, No. 13, Fuxi Haiwei Road, Xiaolan Town, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN ZHONGAI ELECTRONIC TECHNOLOGY Co.,Ltd. |
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