CN214507424U - Multi-path dimming control circuit and LED lamp - Google Patents
Multi-path dimming control circuit and LED lamp Download PDFInfo
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- CN214507424U CN214507424U CN202022748212.1U CN202022748212U CN214507424U CN 214507424 U CN214507424 U CN 214507424U CN 202022748212 U CN202022748212 U CN 202022748212U CN 214507424 U CN214507424 U CN 214507424U
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Abstract
The utility model discloses a multi-path dimming control circuit, which comprises a main drive circuit, an intelligent module, a constant current circuit and a LED circuit; the main driving circuit is connected with the constant current circuit and used for outputting a constant voltage power supply to the constant current circuit; the constant current circuit is connected with the LED circuit and is used for outputting constant current to the LED circuit; the intelligent module is connected with the constant current circuit and used for adjusting the constant current output by the constant current circuit to the LED circuit so as to control the brightness of the LED circuit. The utility model also discloses a LED lamp. Adopt the utility model discloses, can realize the adjustting of the lighteness of LED circuit, the flexibility is strong.
Description
Technical Field
The utility model relates to a LED technical field especially relates to a multichannel dimming control circuit and LED lamp.
Background
In the lighting industry, LED lamps are replacing traditional incandescent lamps and energy saving lamps in large quantities due to their characteristics of high light efficiency and long life.
For the illuminating lamp, the user needs different light intensities in different environments so that the eyes of the user can continuously work under certain working intensity without getting bored, and therefore, the LED lamp with the dimming function is produced accordingly.
However, the existing LED lamp with dimming function is often complex in structure and high in cost, so that the development of a dimming LED lamp with simple structure and low cost has become a problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a multichannel dimming control circuit that simple structure, flexibility are strong is provided, the adjustting of the lighteness of LED circuit can be realized.
The utility model aims to solve the technical problem still in, provide a multichannel dimming control circuit, can realize the colour temperature regulation of LED circuit.
In order to solve the technical problem, the utility model provides a multi-path dimming control circuit, which comprises a main driving circuit, an intelligent module, a constant current circuit and a LED circuit; the main driving circuit is connected with the constant current circuit and used for outputting a constant voltage power supply to the constant current circuit; the constant current circuit is connected with the LED circuit and is used for outputting constant current to the LED circuit; the intelligent module is connected with the constant current circuit and used for adjusting the constant current output by the constant current circuit to the LED circuit so as to control the brightness of the LED circuit.
As an improvement of the above scheme, the intelligent module is provided with at least two signal output ends, the constant current circuit comprises at least two groups of constant current modules, and the intelligent module outputs PWM signals through the signal output ends to respectively control constant current output by the constant current modules;
the LED circuit comprises at least two groups of LED modules, the LED modules correspond to the constant current modules one to one, and the LED modules adjust the brightness according to the constant current output by the corresponding constant current modules.
As an improvement of the above scheme, each group of constant current modules comprises a constant current chip, a first resistor, a second resistor, a third resistor, a regulating resistor group and a polarity capacitor; the constant current chip is provided with a constant current output port, a power input port, a grounding port, a signal input port and a current setting port, the constant current output port is connected with the LED circuit, the power input port is connected with the main driving circuit through the first resistor and is grounded through the polar capacitor, the grounding port is grounded, the signal input port is connected with the intelligent module through the second resistor and is grounded through the third resistor, and the current setting port is grounded through the adjusting resistor group.
As an improvement of the scheme, the constant current chip is an SM15106 chip.
As an improvement of the above scheme, the main driving circuit comprises a driving chip, a rectifying module, a voltage transformation module, a compensation module, an adjusting module and a field effect transistor; the driving chip is provided with a power supply port, a driving port, a compensation port, a current limiting port and a voltage control port, the power supply port is connected with an external power supply through the rectification module, the driving port and the current limiting port are connected with the input end of the voltage transformation module through the field effect tube, the output end of the voltage transformation module is connected with the input end of the constant current circuit, the compensation port is grounded through the compensation module, and the voltage control port is grounded through the regulation module.
As an improvement of the scheme, the driving chip is a SY5018 chip.
As an improvement of the scheme, the color temperatures of each group of LED modules are different.
As an improvement of the scheme, the color temperatures of at least two groups of LED modules are the same.
As an improvement of the scheme, the intelligent module is a 2.4G module, a Bluetooth module or a WIFI module.
Correspondingly, the utility model also provides a LED lamp, including lamp body and above-mentioned multichannel dimming control circuit, multichannel dimming control circuit locates in the lamp body.
Implement the utility model has the advantages that:
the utility model combines the main drive circuit, the intelligent module, the constant current circuit and the LED circuit to form a multi-path light modulation control circuit, and the intelligent module can adjust the constant current output by the constant current circuit in real time, thereby realizing the brightness adjustment of the LED circuit and having strong flexibility;
furthermore, the utility model discloses a through setting up the LED module that multiple colour temperatures are different, and through the luminance of controlling each group of LED module accurately, mix out different colour temperatures, especially be fit for being used for the colour mixture scene, the performance is superior, the reliability is high;
correspondingly, main drive circuit in the utility model adopts the isolation scheme to locate constant current circuit, intelligent object and LED circuit in main drive circuit's secondary circuit, reduced the impact of high voltage electric network surge, noise to the circuit widely, it is lower to the electron device stress requirement of circuit, make system's work more stable more reliable.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the multi-path dimming control circuit of the present invention;
fig. 2 is a schematic structural diagram of another embodiment of the multi-path dimming control circuit of the present invention;
fig. 3 is a circuit diagram of an intelligent module in the multi-path dimming control circuit of the present invention;
fig. 4 is a circuit diagram of the main driving circuit in the multi-path dimming control circuit of the present invention;
fig. 5 is a circuit diagram of the constant current module in the multi-path dimming control circuit of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 shows a schematic structural diagram of the multi-way dimming control circuit of the present invention, which includes a main driving circuit 1, an intelligent module 2, a constant current circuit 3 and an LED circuit 4. Specifically, the main driving circuit 1 is connected to a constant current circuit 3, and is configured to output a constant voltage power supply to the constant current circuit 3; the constant current circuit 3 is connected with the LED circuit 4 and is used for outputting a constant current to the LED circuit 4; the intelligent module 2 is connected with the constant current circuit 3 and used for adjusting the constant current output by the constant current circuit 3 to the LED circuit 4 so as to control the brightness of the LED circuit 4.
When the LED driving circuit works, the main driving circuit 1 outputs a constant voltage power supply to the constant current circuit 3, and then the constant current circuit 3 outputs a constant current to the LED circuit 4. In the working process, a user can adjust the constant current output by the constant current circuit 3 in real time through the intelligent module 2, so that the brightness of the LED circuit 4 is adjusted, and the flexibility is strong.
As shown in fig. 2, the intelligent module is provided with at least two signal output ends, the constant current circuit 3 includes at least two groups of constant current modules, and the intelligent module outputs PWM signals through the signal output ends to respectively control constant current output by the constant current modules; the LED circuit 4 comprises at least two groups of LED modules, the LED modules correspond to the constant current modules one by one, and the LED modules adjust the brightness according to the constant current output by the corresponding constant current modules.
As shown in fig. 3, the intelligent module 2 can output three sets of PWM (CW/WW/NL) signals to control the output currents of the three sets of constant current modules respectively, so as to adjust the brightness of the three sets of LED modules respectively, and the operation is convenient and the adjustment is accurate. Preferably, the smart module 2 is a 2.4G module, a bluetooth module or a WIFI module, but not limited thereto.
Furthermore, the color temperature of each group of LED modules is different, or the color temperatures of at least two groups of LED modules are the same.
It should be noted that, by using the LED modules with different color temperatures, different brightness adjustments can be realized and different color temperatures can be mixed by controlling the current of each LED module. Therefore, through the utility model discloses can control the luminance of every group LED module accurately, be particularly suitable for being used for the colour mixture scene, the superior performance, the reliability is high.
As shown in fig. 4, the main driving circuit 1 includes a driving chip U1, a rectifying module M, a transforming module N, a compensating module Q, a regulating module P, and a fet Q1. The driving chip U1 is provided with a power supply port VIN, a driving port DRV, a compensation port COMP, a current limiting port ISEN and a voltage control port VSEN; the driving chip U1 is preferably, but not limited to, a SY5018 chip. Specifically, the method comprises the following steps:
the power supply port VIN is connected with an external power supply through the rectification module M; the rectifying module M comprises a rectifying bridge DB1, a first capacitor C1 and a resistor R2, the output end of the rectifying bridge DB1 is connected with the first capacitor C1 in parallel, and the forward direct-current output end of the rectifying bridge DB1 is connected with a power supply port VIN through the resistor R2.
The driving port DRV and the current limiting port ISEN are connected with the voltage transformation module N through the field effect transistor Q1; the transformer module N comprises an RC parallel circuit, a second diode D2, a transformer T1, a first diode D1 and a third capacitor C3, the RC parallel circuit is connected with the second diode D2 in series and then is connected to the primary coil of the transformer T1, the secondary coil of the transformer T1 is connected with the third capacitor C3 in parallel, and the first diode D1 is arranged between the secondary coil of the transformer T1 and the third capacitor C3; the drain electrode of the field effect transistor Q1 is connected with the primary coil of the transformer T1, the grid electrode of the field effect transistor Q1 is connected with the driving port DRV through a resistor R3, and the source electrode of the field effect transistor Q1 is connected with the current limiting port ISEN and is grounded through a resistor R4;
the compensation port COMP is grounded through the compensation module Q, wherein the PF value can be effectively adjusted through the compensation module Q; specifically, the compensation module Q includes an RC series circuit and a sixth capacitor C6 connected in parallel with the RC series circuit.
The voltage control port VSEN is grounded through the regulating module P; wherein the adjusting module P comprises a fourth capacitor C4, a third diode D3, a resistor R5, a resistor R6 and an inductor NAUXThe power supply port VIN is grounded through a fourth capacitor C4, and is grounded through a third diode D3, a resistor R5 and a resistor R6 in sequence, the voltage control port VSEN is grounded through a resistor R6, and the inductor N is connected to the groundAUXOne end of which is connected to the anode of the third diode D3 and the other end of which is grounded.
Therefore, the main driving circuit U1 of the utility model adopts the SY5018 scheme to provide constant voltage output, thereby realizing the constant voltage supply of the constant current circuit 3 and ensuring the stable operation of the constant current circuit 3; and simultaneously, the utility model provides a main drive circuit 1 adopts the isolation scheme, provides 36V's direct current output for constant current circuit 3 to with constant current circuit 3, intelligent module 2 and LED circuit 4 in main drive circuit 1's secondary circuit, reduced high-voltage electric network surge widely, the noise is to constant current circuit 3, intelligent module 2 and LED circuit 4's impact, convection current constant current circuit 3, intelligent module 2 and LED circuit 4's electron device stress requirement is lower, make system work more stable more reliable.
As shown in fig. 5, each group of constant current modules includes a constant current chip U5, a first resistor R15, a second resistor R17, a third resistor R16, a group of adjusting resistors (RS4, RS5), and a polar capacitor E7; the constant current chip U5 is provided with a constant current output port OUT, a power input port VIN, a ground port GND, a signal input port DIM and a current setting port REXT, the constant current output port OUT is connected with the LED circuit 4, the power input port VIN is connected with the main drive circuit 1 through the first resistor R15 and is grounded through the polar capacitor E7, the ground port GND is grounded, the signal input port DIM is connected with the intelligent module 2 through the second resistor R17 and is grounded through the third resistor R16, and the current setting port REXT is grounded through the adjusting resistor group (RS4, RS 5). Preferably, the constant current chip U5 is an SM15106 chip, but is not limited thereto.
Therefore, the utility model provides a constant current module adopts the SM15106 scheme to provide constant current output, has realized LED circuit 4's constant current supply, guarantees LED circuit 4's steady operation.
To sum up, the utility model combines the main driving circuit 1, the intelligent module 2, the constant current circuit 3 and the LED circuit 4 to form a multi-path dimming control circuit, and can adjust the constant current output by the constant current circuit 3 in real time through the intelligent module 2, thereby realizing the brightness adjustment of the LED circuit 4 and having strong flexibility; and simultaneously, the utility model discloses a set up the different LED module of multiple colour temperature, through the luminance of accurately controlling every group LED module, mix out different colour temperatures, especially be fit for being used for the colour mixture scene, the superior performance, the reliability is high.
Additionally, the utility model also discloses a LED lamp, it includes lamp body and the above multichannel dimming control circuit, multichannel dimming control circuit locates in the lamp body.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and decorations can be made without departing from the principle of the invention, and these modifications and decorations are also regarded as the protection scope of the present invention.
Claims (10)
1. A multi-path dimming control circuit is characterized by comprising a main driving circuit, an intelligent module, a constant current circuit and an LED circuit;
the main driving circuit is connected with the constant current circuit and used for outputting a constant voltage power supply to the constant current circuit;
the constant current circuit is connected with the LED circuit and is used for outputting constant current to the LED circuit;
the intelligent module is connected with the constant current circuit and used for adjusting the constant current output by the constant current circuit to the LED circuit so as to control the brightness of the LED circuit.
2. The multi-channel dimming control circuit according to claim 1, wherein the intelligent module is provided with at least two signal output terminals, the constant current circuit comprises at least two groups of constant current modules, and the intelligent module outputs PWM signals through the signal output terminals to respectively control the constant current output by the constant current modules;
the LED circuit comprises at least two groups of LED modules, the LED modules correspond to the constant current modules one to one, and the LED modules adjust the brightness according to the constant current output by the corresponding constant current modules.
3. The multi-channel dimming control circuit of claim 2, wherein each group of constant current modules comprises a constant current chip, a first resistor, a second resistor, a third resistor, a group of adjusting resistors and a polar capacitor;
the constant current chip is provided with a constant current output port, a power input port, a grounding port, a signal input port and a current setting port, the constant current output port is connected with the LED circuit, the power input port is connected with the main driving circuit through the first resistor and is grounded through the polar capacitor, the grounding port is grounded, the signal input port is connected with the intelligent module through the second resistor and is grounded through the third resistor, and the current setting port is grounded through the adjusting resistor group.
4. The multi-channel dimming control circuit of claim 3, wherein the constant current chip is an SM15106 chip.
5. The multi-channel dimming control circuit of claim 1, wherein the main driving circuit comprises a driving chip, a rectifying module, a transforming module, a compensating module, a regulating module and a field effect transistor;
the driving chip is provided with a power supply port, a driving port, a compensation port, a current limiting port and a voltage control port, the power supply port is connected with an external power supply through the rectification module, the driving port and the current limiting port are connected with the input end of the voltage transformation module through the field effect tube, the output end of the voltage transformation module is connected with the input end of the constant current circuit, the compensation port is grounded through the compensation module, and the voltage control port is grounded through the regulation module.
6. The multi-channel dimming control circuit of claim 5, wherein the driving chip is a SY5018 chip.
7. The multi-channel dimming control circuit of claim 2, wherein the color temperature of each group of LED modules is different.
8. The multi-channel dimming control circuit of claim 2, wherein the color temperatures of at least two sets of LED modules are the same.
9. The multi-channel dimming control circuit of claim 1, wherein the smart module is a 2.4G module, a bluetooth module, or a WIFI module.
10. An LED lamp, comprising a lamp body and the multi-channel dimming control circuit according to any one of claims 1 to 9, wherein the multi-channel dimming control circuit is disposed in the lamp body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022748212.1U CN214507424U (en) | 2020-11-24 | 2020-11-24 | Multi-path dimming control circuit and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022748212.1U CN214507424U (en) | 2020-11-24 | 2020-11-24 | Multi-path dimming control circuit and LED lamp |
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| Publication Number | Publication Date |
|---|---|
| CN214507424U true CN214507424U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022748212.1U Active CN214507424U (en) | 2020-11-24 | 2020-11-24 | Multi-path dimming control circuit and LED lamp |
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| Country | Link |
|---|---|
| CN (1) | CN214507424U (en) |
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- 2020-11-24 CN CN202022748212.1U patent/CN214507424U/en active Active
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