CN219351944U - Dimming and toning control circuit and LED lamp - Google Patents
Dimming and toning control circuit and LED lamp Download PDFInfo
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- CN219351944U CN219351944U CN202222932552.9U CN202222932552U CN219351944U CN 219351944 U CN219351944 U CN 219351944U CN 202222932552 U CN202222932552 U CN 202222932552U CN 219351944 U CN219351944 U CN 219351944U
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Abstract
The utility model relates to the technical field of electric modules, and discloses a dimming and toning control circuit and an LED lamp. The circuit comprises a driving circuit, an adjusting circuit, a dimming circuit and at least two groups of output circuits, wherein the adjusting circuit is connected with the driving circuit; the dimming circuit controls the current value of the load power supply formed by the driving circuit according to the duty ratio of the first dimming signal, and adjusts the conduction duty ratio of the adjusting circuit according to the duty ratio of the second dimming signal, so that the current value of the load power supply output by the driving circuit is adjusted through the adjusting circuit; the output circuit is connected with the driving circuit, is connected with the load power supply output by the driving circuit and outputs the load power supply, and adjusts the current value of the load power supply according to the duty ratio of the first color mixing signal or the duty ratio of the second color mixing signal. The embodiment of the utility model can realize flexible and changeable dimming and toning operation and diversified dimming and toning effects.
Description
Technical Field
The utility model relates to the technical field of electric modules, in particular to a dimming and color-mixing control circuit and an LED lamp.
Background
At present, the LED light source gradually replaces incandescent light sources and fluorescent light sources with the characteristics of long service life, no pollution, high light efficiency and the like, so that an LED lamp using LEDs as the light source appears.
Color temperature is a value used to measure the light color of a light source, and can be interpreted as: the color of light emitted by a light source is the same as the color of light radiated by a black body at a certain temperature, the temperature of the black body being referred to as the color temperature of the light source. The color temperature of the light source is different, the light color is different, and the color temperature has a stable atmosphere and a warm feeling at 3300K; the color temperature is 3000-5000K, which is the middle color temperature, and has a refreshing feeling; the color temperature is above 5000K, and the color temperature is cold. The light sources with different color temperatures can bring different experiences to users, the preference of the color temperatures is also determined by people, and the lamp is required to have the color temperature adjusting function. Moreover, users are used for lamps with different brightness in different time periods, so that the lamp is required to have a brightness adjusting function according to different use requirements of clients.
Therefore, how to combine the color temperature adjusting function and the brightness adjusting function of the lamp is a technical problem to be solved by the utility model.
Disclosure of Invention
The utility model aims to provide a dimming and toning control circuit and an LED lamp, which aim to combine the color temperature adjusting function and the brightness adjusting function of a lamp.
In a first aspect, there is provided a dimming and toning control circuit, comprising:
a driving circuit;
the adjusting circuit is connected with the driving circuit;
the dimming circuit is connected with the driving circuit and the adjusting circuit, is connected with the first dimming signal and the second dimming signal, controls the current value of the load power supply formed by the driving circuit according to the duty ratio of the first dimming signal, and adjusts the conduction duty ratio of the adjusting circuit according to the duty ratio of the second dimming signal, so that the current value of the load power supply output by the driving circuit is adjusted through the adjusting circuit;
at least two groups of output circuits, at least one group of output circuits is connected with the first toning signal, and at least one group of output circuits is connected with the second toning signal; the output circuit is connected with the driving circuit, is connected with the load power supply output by the driving circuit and outputs the load power supply, and adjusts the current value of the load power supply according to the duty ratio of the first color mixing signal or the duty ratio of the second color mixing signal.
In some embodiments, the dimming circuit controls the driving circuit to output a load power supply, so that the driving circuit, the output circuit and an LED load connected to the output circuit to output the load power supply form a power supply loop;
the adjusting circuit is connected with the power supply end and the return end of the driving circuit, and the dimming circuit is connected with the adjusting circuit, so that the adjusting circuit and the driving circuit outputting the load power supply form a power-dividing circuit, and the current value of the load power supply output by the driving circuit is adjusted.
In some embodiments, the drive circuit includes a freewheel module, an energy storage inductor, a current sampling module, and a first power switching module;
the first power switch module, the energy storage inductor and the output circuit are sequentially connected, and the output circuit, the current sampling module, the follow current module and the energy storage inductor are sequentially connected;
the first power switch module is connected with a driving power supply, the dimming circuit controls the on duty ratio of the first power switch module according to the duty ratio of the first dimming signal, and the energy storage inductor is connected with the driving power supply output by the first power switch module, so that the energy storage inductor, the output circuit, the LED load, the current sampling module and the follow current module form a power supply loop.
In some embodiments, the regulation circuit includes a second power switch module and a voltage divider module;
the first end of the second power switch module is connected with the power supply end of the driving circuit, the second end of the second power switch module is connected with the power return end of the driving circuit, and the control end of the second power switch module is connected with the dimming circuit through the voltage division module.
In some embodiments, the output circuit includes a common mode filter module and a third power switch module;
the common mode filter module is connected with the driving circuit and the third power switch module, is connected with a load power supply output by the driving circuit and outputs the load power supply, and is connected with a load power supply output by an LED load connected with the load power supply from the output circuit and outputs the load power supply to the third power switch module;
the first end of the third power switch module is connected with the common mode filter module, the second end of the third power switch module is connected with the driving circuit, the third end of the third power switch module is connected with the dimming circuit, and the third power switch module which is controlled by the dimming circuit to be conducted transmits the common mode filter to the driving module from a load power supply obtained by the LED load.
In some embodiments, the dimming palette control circuit further comprises:
and the peak detection circuit is provided with a rectifying device, is connected with the driving circuit and the output circuit, and detects the load power supply connected with the output circuit so as to detect the peak value of the load power supply.
In some embodiments, the dimming palette control circuit further comprises:
and the effective value detection circuit is connected with the driving circuit and the output circuit and is used for detecting the load power supply connected with the output circuit so as to detect the effective value of the load power supply.
In some embodiments, the color or color temperature of the LED loads to which the output circuit is connected is different.
In some embodiments, the dimming circuit includes an IW380 series constant current control chip.
In a second aspect, an LED lamp is provided that includes the dimming and toning control circuit of the first aspect.
The utility model has the beneficial effects that: the control of the current of the load power supply is realized based on at least two dimming signals, and the control of the current value of the load power supply of the single-group LED load is respectively realized based on at least two toning signals, so that the current value of the load power supply of the single-group LED load can be influenced by the dimming signals and the toning signals together, and flexible dimming toning operation and diversified dimming toning effects can be realized.
Drawings
Fig. 1 is a schematic diagram of a structure of a dimming and toning control circuit according to an embodiment.
Fig. 2 is a schematic diagram of a peak detection circuit and an effective value detection circuit according to an embodiment.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the present utility model will be further described with reference to the embodiments and the accompanying drawings.
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
According to a first aspect of the present utility model, there is provided a dimming and toning control circuit.
As shown in fig. 1, the dimming and toning control circuit includes a driving circuit 10, a regulating circuit 20, a dimming circuit 30, and at least two sets of output circuits 40.
The adjusting circuit 20 is connected with the driving circuit 10, the dimming circuit 30 is respectively connected with the driving circuit 10 and the adjusting circuit 20, the output circuit 40 is connected with the driving circuit 10, the dimming circuit 30 is connected with the first dimming signal and the second dimming signal, at least one group of output circuits 40 is connected with the first toning signal, and at least one group of output circuits 40 is connected with the second toning signal.
The dimming circuit 30 controls the current value of the load power supply formed by the driving circuit 10 according to the duty ratio of the first dimming signal, and adjusts the on duty ratio of the adjusting circuit 20 according to the duty ratio of the second dimming signal, thereby adjusting the current value of the load power supply output by the driving circuit 10 through the adjusting circuit 20. The output circuit 40 is connected to the load power supply output from the driving circuit 10 and outputs the load power supply, and adjusts the current value of the load power supply according to the duty ratio of the first color matching signal or the duty ratio of the second color matching signal.
The driving circuit 10 outputs a load power supply to the output circuit 40, the output circuit 40 outputs the load power supply obtained from the driving circuit 10 to the LED load, the LED load is electrified to emit light, the dimming circuit 30 receives the first dimming signal and the second dimming signal and adjusts the current value of the load power supply output by the driving circuit 10, so that the brightness of the LED load is adjusted, the output circuit 40 correspondingly adjusts the current value of the load power supply output to the LED load after receiving the first toning signal or the second toning signal, and the light-emitting brightness of the LED load connected with different output circuits 40 correspondingly changes, so that different color mixing effects are generated.
The dimming step is as follows: the dimming circuit 30 receives the first dimming signal and the second dimming signal, sends a corresponding control instruction to the driving circuit 10 according to the duty ratio of the first dimming signal, adjusts the conduction duty ratio of the driving circuit 10, changes the current value of the load power supply formed by the driving circuit 10 along with the change of the duty ratio of the first dimming signal, sends a corresponding control instruction to the adjusting circuit 20 according to the duty ratio of the second dimming signal, adjusts the conduction duty ratio of the adjusting circuit 20, changes the conduction duty ratio of the adjusting circuit 20 along with the change of the duty ratio of the second dimming signal, limits the current value of the load power supply to be output by the driving circuit 10 by the adjusting circuit 20, and adjusts the conduction duty ratio of the adjusting circuit 20 to change the degree of limiting the output of the load power supply by the driving circuit 10, thereby adjusting the current value of the load power supply output by the driving circuit 10.
The color mixing step is as follows: at least one group of output circuits 40 is connected with the first color matching signal, at least one group of output circuits 40 is connected with the second color matching signal, the output circuits 40 are connected with the load power supply output by the driving circuit 10 and adjust the load power supply output to the LED load according to the first color matching signal or the second color matching signal, the load power supply connected with at least two groups of LED loads is changed along with the change of the duty ratio of the first color matching signal or the duty ratio of the second color matching signal by changing the duty ratio of the first color matching signal and/or the duty ratio of the second color matching signal, and the luminous brightness of at least two groups of LED loads is respectively changed, so that different color mixing effects are generated and different color light effects are generated.
It is understood that the first dimming signal, the second dimming signal, the first color mixing signal and the second color mixing signal are signals generated by an external signal source, and may be PWM signals, PPG signals and/or analog level signals, which are not limited in this application.
In an embodiment, the duty cycle of the first dimming signal is dynamically changed and the duty cycle of the second dimming signal is unchanged or the duty cycle of the first dimming signal is unchanged and the duty cycle of the second dimming signal is dynamically changed, thereby setting the dimming boundary. Illustratively, when a load power supply having a current value of 12.5% or more is obtained, the duty ratio of the first dimming signal is set to be dynamically changed while the duty ratio of the second dimming signal is maintained constant (high level is maintained), and when a load power supply having a current value of less than 12.5% is obtained, the duty ratio of the first dimming signal is set to be maintained constant (12.5% duty ratio) while the duty ratio of the second dimming signal is set to be dynamically changed.
In some embodiments, the color or color temperature of the LED loads to which the output circuit 40 is connected is different. Illustratively, the output circuits 40 are provided with two groups, one group of the output circuits 40 is connected with the first color matching signal and is connected with an LED load with a color temperature of 6500K, the other group of the output circuits 40 is connected with the second color matching signal and is connected with an LED load with a color temperature of 2700K, when the current of a load power supply output by the output circuits 40 is unchanged, the duty ratio of the first color matching signal is connected with 0 and the duty ratio of the first color matching signal is 100% when the output color temperature value is 2700K, and when the output color temperature value is 6500K, the duty ratio of the first color matching signal is connected with 100% and the duty ratio of the first color matching signal is 0, and when the output color temperature value is 3800K, the duty ratio of the first color matching signal is connected with 50% and the duty ratio of the first color matching signal is 50%.
In one embodiment, the regulator circuit 20 limits the current value of the load power supply to be output by the driver circuit 10 by shunting the load power supply formed by the driver circuit 10.
The dimming circuit 30 controls the driving circuit 10 to output the load power, so that the driving circuit 10, the output circuit 40 and the LED load connected to the output circuit 40 to output the load power form a power supply loop.
The power supply end of the driving circuit 10 outputs a load power supply to the output circuit 40, the output circuit 40 is connected with the load power supply output by the driving circuit 10 and outputs the load power supply to the anode of the LED load, the cathode of the LED load is connected with the output circuit 40 and outputs the load power supply connected with the driving circuit 10 from new output to the driving circuit 10, and the driving circuit 10 outputs the load power supply output by the LED load to the return end of the driving circuit 10 again, so that the driving circuit 10, the output circuit 40 and the LED load form a power supply loop.
The adjusting circuit 20 is connected to the power supply end and the power return end of the driving circuit 10, and the dimming circuit 30 turns on the adjusting circuit 20 to form a circuit loop with the driving circuit 10 outputting the load power supply, so as to adjust the current value of the load power supply output by the driving circuit 10.
The regulating circuit 20 is connected with the power supply end and the return end of the driving circuit 10, the power supply end and the return end of the driving circuit 10 are communicated through the regulating driving circuit 10 when the regulating circuit 20 is conducted, the regulating circuit 20 and the driving circuit 10 form a power distribution loop, a load power supply formed by the driving circuit 10 is output from the power supply end and then is output to the return end of the driving circuit 10 through the regulating circuit 20, at the moment, the driving circuit 10 does not output the load power supply to the output circuit 40, and when the regulating circuit 20 is turned off, the driving circuit 10 resumes outputting the load power supply to the output circuit 40.
The dimming circuit 30 adjusts the on duty ratio of the adjusting circuit 20, and changes the on duration of the adjusting circuit 20 and the shunt duration of the adjusting circuit 20, thereby adjusting the current value of the load power supply output by the driving circuit 10.
The present utility model will be described in further detail with reference to specific examples.
As shown in fig. 1, in an embodiment, the driving circuit 10 includes a freewheel module 11, an energy storage inductor 12, a current sampling module 13, and a first power switching module 14.
The first power switch module 14, the energy storage inductor 12 and the output circuit 40 are sequentially connected, and the output circuit 40, the current sampling module 13, the freewheel module 11 and the energy storage inductor 12 are sequentially connected. The first power switch module 14 is connected to a driving power supply, the dimming circuit 30 controls the on duty ratio of the first power switch module 14 according to the duty ratio of the first dimming signal, and the energy storage inductor 12 is connected to the driving power supply output by the first power switch module 14, so that the energy storage inductor 12, the output circuit 40, the LED load, the current sampling module 13 and the follow current module 11 form a power supply loop.
The energy storage inductor 12 is connected with one end of the output circuit 40 to serve as a power supply end of the driving circuit 10, and the current sampling module 13 is connected with one end of the driving circuit 10 to serve as a power return end of the driving circuit 10. The dimming circuit 30 adjusts the on duty ratio of the first power switch module 14 according to the duty ratio of the first dimming signal, when the first power switch module 14 is turned on, the driving power flows to the energy storage inductor 12 through the first power module, the driving power flowing out of the energy storage inductor 12 is output to the output circuit 40 as a load power, when the first power switch module 14 is turned off, the first power module does not output the driving power, but the induced electromotive force formed by the energy storage inductor 12 is output to the output circuit 40 as the load power, the power supply is kept stable, the load power output by the energy storage inductor 12 flows to the output circuit 40, the LED load, the current sampling module 13 and the freewheel module 11 in sequence, then reaches the energy storage inductor 12 again, the LED load is electrified to emit light, and the light emitting brightness depends on the on duty ratio of the first power switch module 14 controlled by the dimming circuit 30.
More specifically, the freewheel module 11 includes at least a freewheel diode D1, the current sampling module 13 includes at least a sampling resistor RS, and the first power switching module 14 includes at least a first MOS transistor Q1. The drain electrode of the first MOS tube Q1 is connected with a driving power supply, the source electrode of the first MOS tube Q1 is connected with one end of the energy storage inductor 12 and the cathode of the follow current diode D1, the grid electrode of the first MOS tube Q1 receives a control instruction of the dimming circuit 30, the anode of the follow current diode D1 is connected with one end of the sampling resistor RS, the other end of the energy storage inductor 12 is used as a power supply end of the driving circuit 10, and the other end of the sampling resistor RS is used as a return end of the driving circuit 10.
As shown in fig. 1, in one embodiment, the regulating circuit 20 includes a second power switch module 21 and a voltage dividing module 22.
The first end of the second power switch module 21 is connected with the power supply end of the driving circuit 10, the second end of the second power switch module 21 is connected with the power return end of the driving circuit 10, and the control end of the second power switch module 21 is connected with the dimming circuit 30 through the voltage division module 22.
The dimming circuit 30 adjusts the on duty ratio of the second power switch module 21 according to the duty ratio of the second dimming signal, when the second power switch module 21 is turned on, the load power outputted by the driving circuit 10 flows from the power supply end of the driving circuit 10 to the return end of the driving circuit 10 through the second power module, and when the second power switch module 21 is turned off, the load power outputted by the driving circuit 10 is outputted to the output circuit 40, and finally flows from the LED load to the return end of the driving circuit 10 through the output circuit 40.
Specifically, the second power switch module 21 includes at least a second MOS transistor Q2. The drain electrode of the second MOS tube Q2 is connected with the power supply end of the driving circuit 10, the source electrode of the second MOS tube Q2 is connected with the power return end of the driving circuit 10, the grid electrode of the first MOS tube Q1 is connected with the dimming circuit 30 through the voltage division module 22, and the control instruction of the dimming circuit 30 is received.
As shown in fig. 1, in an embodiment, the output circuit 40 includes a common mode filter module 41 and a third power switch module 42.
The common mode filter module 41 is connected to the drive circuit 10 and the third power switch module 42, and is connected to the load power supply output from the drive circuit 10, and is connected to the load power supply output from the LED load to which the load power supply is connected from the output circuit 40, and is output to the third power switch module 42. The first end of the third power switch module 42 is connected with the common mode filter module 41, the second end of the third power switch module 42 is connected with the driving circuit 10, the third end of the third power switch module 42 is connected with the dimming circuit 30, and the third power switch module 42 which is controlled by the dimming circuit 30 to be conducted transmits a load power supply obtained by the common mode filter module 41 from the LED load to the driving circuit 10.
Specifically, the common-mode filtering module 41 includes at least a common-mode inductor L1, and the third power switch includes at least a third MOS transistor Q3. The second end of the common-mode inductor L1 is connected with the power supply end of the driving circuit 10, the first end of the common-mode inductor L1 is connected with the anode of the LED load, the third end of the common-mode inductor L1 is connected with the drain electrode of the third MOS tube Q3, the fourth end of the common-mode inductor L1 is connected with the cathode of the LED load, the source electrode of the third MOS tube Q3 is connected with the power return end of the driving circuit 10, and the grid electrode of the third MOS tube Q3 receives the control instruction of the dimming circuit 30. The common-mode inductor L1 is connected to a load power supply output by the driving circuit 10 and outputs the load power supply to the LED load, the load power supply reflowed by the LED load is output to the driving circuit 10 through the third MOS tube Q3 after passing through the common-mode inductor L1, and the on-duty ratio of the third MOS tube Q3 is regulated according to the first color mixing signal or the second color mixing signal, so that the current value of the load power supply flowing through the LED load is controlled, and the light-emitting brightness of the LED load with the corresponding color temperature or color is regulated.
As shown in fig. 1, in an embodiment, the dimming circuit 30 at least includes an IW380 series constant current control chip.
As shown in fig. 2, in an embodiment, the dimming and toning control circuit further includes a peak detection circuit 50 and an effective value detection circuit 60.
The peak detection circuit 50 is provided with a rectifying device. The peak detection circuit 50 is connected to the drive circuit 10 and the output circuit 40, and detects a peak value of the load power source connected to the output circuit 40.
The effective value detection circuit 60 is connected to the driving circuit 10 and the output circuit 40, and detects the load power to which the output circuit 40 is connected to detect the effective value of the load power.
The peak detection circuit 50 includes a rectifier diode D2, a first resistor R1, a second resistor R2, a third resistor R3, and a first capacitor C1. The power supply end of the driving circuit 10 is connected to the positive pole of rectifier diode D2, the one end of first resistance R1 is connected to the negative pole of rectifier diode D2, output circuit 40 is connected respectively to the other end of first resistance R1 and one end of second resistance R2 respectively, the one end of third resistance R3 and one end of first electric capacity C1 are connected respectively to the other end of second resistance R2, the other end of third resistance R3 and the other end ground connection of first electric capacity C1, the peak value detected signal that the peak value that detects the load power was obtained is output to the intermediate node of second resistance R2 and third resistance R3.
The effective value detection circuit 60 includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a second capacitor C2. One end of the fourth resistor R4 is connected to the power supply end of the driving circuit 10, the other end of the fourth resistor R4 and one end of the fifth resistor R5 are respectively connected to the output circuit 40, the other end of the fifth resistor R5 is respectively connected to one end of the sixth resistor R6 and one end of the second capacitor C2, the other end of the sixth resistor R6 and the other end of the second capacitor C2 are grounded, and an intermediate node between the fifth resistor R5 and the sixth resistor R6 outputs an effective value detection signal obtained by detecting an effective value of the load power supply.
According to a second aspect of the present utility model, there is provided an LED lamp including the dimming and toning control circuit of the first aspect.
The specific structure of the dimming and color-mixing control circuit refers to the above embodiments, and since the LED lamp provided by the present utility model adopts all the technical solutions of all the embodiments, at least the technical solutions of the embodiments have all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
In summary, the dimming and toning control circuit and the LED lamp provided by the utility model realize the control of the current of the load power supply based on at least two dimming signals and the control of the current value of the load power supply of the single-group LED load based on at least two toning signals respectively, the dimming signals and the toning signals can jointly influence the current value of the load power supply of the single-group LED load, and flexible dimming and toning operation and diversified dimming and toning effects can be realized.
In the present utility model, unless explicitly specified and limited otherwise, the terms "first," "second," "third," "fourth," and the like (if any) are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present utility model, unless explicitly specified and limited otherwise, the term "at least one" means one or more and the term "plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of the following" or its similar expressions means any combination of these items, including any combination of single item(s) or multiple 12 items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural. In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. A dimming and toning control circuit, comprising:
a drive circuit (10);
an adjusting circuit (20) connected to the driving circuit (10);
the dimming circuit (30) is connected with the driving circuit (10) and the regulating circuit (20), is connected with the first dimming signal and the second dimming signal, controls the current value of the load power supply formed by the driving circuit (10) according to the duty ratio of the first dimming signal, and regulates the conduction duty ratio of the regulating circuit (20) according to the duty ratio of the second dimming signal, so that the current value of the load power supply output by the driving circuit (10) is regulated by the regulating circuit (20);
at least two groups of output circuits (40), at least one group of output circuits (40) is connected with a first toning signal, and at least one group of output circuits (40) is connected with a second toning signal; the output circuit (40) is connected with the driving circuit (10), connected with the load power supply output by the driving circuit (10) and used for outputting, and the current value of the load power supply is adjusted according to the duty ratio of the first color matching signal or the duty ratio of the second color matching signal.
2. The dimming and toning control circuit according to claim 1, wherein the dimming circuit (30) controls the driving circuit (10) to output a load power supply, so that the driving circuit (10), the output circuit (40) and an LED load connected to the load power supply from the output circuit (40) form a power supply loop;
the dimming circuit (30) is connected with the power supply end and the power return end of the driving circuit (10), so that the dimming circuit (30) conducts the dimming circuit (20) to enable the dimming circuit (20) and the driving circuit (10) outputting the load power supply to form a circuit loop, and the current value of the load power supply output by the driving circuit (10) is adjusted.
3. The dimming and toning control circuit according to claim 2, wherein the driving circuit (10) comprises a freewheel module (11), an energy storage inductor (12), a current sampling module (13) and a first power switching module (14);
the first power switch module (14), the energy storage inductor (12) and the output circuit (40) are sequentially connected, and the output circuit (40), the current sampling module (13), the follow current module (11) and the energy storage inductor (12) are sequentially connected;
the first power switch module (14) is connected to a driving power supply, the dimming circuit (30) controls the on duty ratio of the first power switch module (14) according to the duty ratio of a first dimming signal, and the energy storage inductor (12) is connected to the driving power supply output by the first power switch module (14), so that the energy storage inductor (12), the output circuit (40), the LED load, the current sampling module (13) and the follow current module (11) form a power supply loop.
4. The dimming and toning control circuit according to claim 2, wherein the regulating circuit (20) comprises a second power switch module (21) and a voltage dividing module (22);
the first end of the second power switch module (21) is connected with the power supply end of the driving circuit (10), the second end of the second power switch module (21) is connected with the power return end of the driving circuit (10), and the control end of the second power switch module (21) is connected with the dimming circuit (30) through the voltage division module (22).
5. The dimming and toning control circuit according to claim 1, wherein the output circuit (40) comprises a common mode filter module (41) and a third power switch module (42);
the common mode filter module (41) is connected with the driving circuit (10) and the third power switch module (42), is connected with a load power supply output by the driving circuit (10) and outputs the load power supply, and is connected with a load power supply output by an LED load connected with the load power supply from the output circuit (40) and outputs the load power supply to the third power switch module (42);
the first end of the third power switch module (42) is connected with the common mode filter module (41), the second end of the third power switch module (42) is connected with the driving circuit (10), the third end of the third power switch module (42) is connected with the dimming circuit (30), and the third power switch module (42) which is controlled by the dimming circuit (30) to be conducted transmits a load power supply obtained by common mode filtering from an LED load to the driving circuit (10).
6. The dimming and toning control circuit according to claim 1, further comprising:
and a peak detection circuit (50) provided with a rectifying device, connected to the drive circuit (10) and the output circuit (40), for detecting a peak value of the load power supply by detecting the load power supply to which the output circuit (40) is connected.
7. The dimming and toning control circuit according to claim 1, further comprising:
and an effective value detection circuit (60) which is connected with the driving circuit (10) and the output circuit (40) and detects the load power supply connected with the output circuit (40) so as to detect the effective value of the load power supply.
8. The dimming and toning control circuit according to claim 1, wherein the LED loads to which the output circuit (40) is connected are different in color or color temperature.
9. The dimming and toning control circuit according to any one of claims 1 to 8, wherein the dimming circuit (30) includes an IW380 series constant current control chip.
10. An LED lamp comprising the dimming and toning control circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222932552.9U CN219351944U (en) | 2022-11-03 | 2022-11-03 | Dimming and toning control circuit and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222932552.9U CN219351944U (en) | 2022-11-03 | 2022-11-03 | Dimming and toning control circuit and LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219351944U true CN219351944U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222932552.9U Active CN219351944U (en) | 2022-11-03 | 2022-11-03 | Dimming and toning control circuit and LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219351944U (en) |
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2022
- 2022-11-03 CN CN202222932552.9U patent/CN219351944U/en active Active
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