CN220402001U - LED drive control circuit capable of adjusting color temperature and sharing 2 lines and 3 lines - Google Patents
LED drive control circuit capable of adjusting color temperature and sharing 2 lines and 3 lines Download PDFInfo
- Publication number
- CN220402001U CN220402001U CN202321643569.0U CN202321643569U CN220402001U CN 220402001 U CN220402001 U CN 220402001U CN 202321643569 U CN202321643569 U CN 202321643569U CN 220402001 U CN220402001 U CN 220402001U
- Authority
- CN
- China
- Prior art keywords
- resistor
- control circuit
- mos tube
- signal output
- output end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001960 triggered effect Effects 0.000 claims abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to the technical field of LED driving, and discloses an LED driving control circuit which is convenient to assemble and can be used for sharing 2 wires and 3 wires, and comprises a main control circuit (101), a first switch circuit (102), a second switch circuit (103) and an LED lamp strip (104), wherein the main control circuit is used for outputting pulse signals, and the first switch circuit (102) and the second switch circuit (103) are used for receiving the pulse signals; the positive electrode of the LED lamp strip (104) is connected with the power end, one negative electrode of the LED lamp strip is connected with the output end of the first switch circuit (102), and the other negative electrode of the LED lamp strip (104) is connected with the output end of the second switch circuit (103); when any pulse signal output by the main control circuit (101) is at a high level, the first switch circuit (102) or the second switch circuit (103) is triggered to drive any LED lamp strip (104).
Description
Technical Field
The utility model relates to the technical field of LED driving, in particular to a color temperature adjustable 2-wire and 3-wire shared LED driving control circuit.
Background
Along with the improvement of the life quality of modern people, the requirements on the light in places such as families, exhibition halls and the like are higher, for example, the color temperature and the brightness can be adjusted, and in order to achieve the effect, LEDs with the color temperatures of 2700K and 6500K are built in the lamp, so that the color temperature and the brightness can be adjusted by a control circuit. However, LEDs of two color temperatures have two connection modes: 1.3 lines (common anode and common cathode); 2.2 wires (LEDs of two color temperatures are antiparallel); this requires two controllers to match the two connection modes of the LEDs, which complicates both installation and use.
Therefore, how to simplify the connection and driving manner of the controller and the LED is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to solve the technical problems that two connection modes exist for the LEDs with the two color temperatures in the prior art: 1.3 lines (common anode and common cathode); 2.2 wires (LEDs of two color temperatures are antiparallel); therefore, two controllers are needed to match LEDs in two connection modes, so that the defects of complex installation and use are overcome, and the LED driving control circuit which is convenient to assemble and can be used for 2 wires and 3 wires of color temperature can be provided.
The technical scheme adopted for solving the technical problems is as follows: an LED drive control circuit for 2-line and 3-line sharing of adjustable temperature is constructed, comprising:
a main control circuit configured within the LED drive control circuit for outputting a pulse signal;
the input end of the first switch circuit is connected with a group of output ends of the main control circuit and is used for receiving the pulse signals;
the input end of the second switch circuit is connected with the other group of output ends of the main control circuit and is used for receiving the pulse signals;
the anode of the LED lamp strip is connected with the power supply end, one path of the cathode of the LED lamp strip is connected with the output end of the first switch circuit,
the other negative electrode of the LED lamp strip is connected with the output end of the second switch circuit;
when any pulse signal output by the main control circuit is at a high level, the first switch circuit or the second switch circuit is triggered to drive any path of LED lamp strip.
In some embodiments, the first switching circuit comprises at least a first divider, a first MOS transistor and a second MOS transistor,
the first signal input end of the first distributor is connected with the first signal output end of the main control circuit,
the second signal input end of the first distributor is connected with the third signal output end of the main control circuit,
the grid electrode of the first MOS tube is connected with a signal output end of the first distributor,
the grid electrode of the second MOS tube is connected with the other signal output end of the first distributor,
the source electrode of the first MOS tube and the drain electrode of the second MOS tube are connected with one negative electrode of the LED lamp strip,
the drain electrode of the first MOS tube is connected with the power supply end,
the source electrode of the second MOS tube is connected with the public end,
when the output of the first signal output end and the third signal output end of the main control circuit is high level, the first MOS tube or the second MOS tube is controlled to be conducted, and one path of the LED lamp strip is lighted;
when the output of the first signal output end and the third signal output end of the main control circuit is low level, the first MOS tube and the second MOS tube are controlled to be cut off.
In some implementations, the first switching circuit further includes a third resistor, a seventh resistor, and a first diode, wherein,
the third resistor is connected in series with the seventh resistor and then connected in parallel with the first diode,
one end of the third resistor and the anode of the first diode are connected with the grid electrode of the first MOS tube, the cathode of the first diode is connected with one end of the seventh resistor,
the other end of the seventh resistor is connected with a signal output end of the first distributor.
In some embodiments, the first switching circuit further comprises a fourth resistor, an eighth resistor, and a second diode, wherein,
the fourth resistor is connected in series with the eighth resistor and then connected in parallel with the second diode,
one end of the fourth resistor and the anode of the second diode are connected with the gate of the second MOS tube, the cathode of the first diode is connected with one end of the eighth resistor,
the other end of the eighth resistor is connected with the other signal output end of the first distributor.
In some embodiments, the second switching circuit includes at least a second distributor, a third MOS transistor, and a fourth MOS transistor,
the first signal input end of the second distributor is connected with the second signal output end of the main control circuit,
the second signal input end of the second distributor is connected with the fourth signal output end of the main control circuit,
the grid electrode of the third MOS tube is connected with a signal output end of the second distributor,
the grid electrode of the fourth MOS tube is connected with the other signal output end of the second distributor,
the source electrode of the third MOS tube and the drain electrode of the fourth MOS tube are connected with the other path of negative electrode of the LED lamp strip,
the drain electrode of the third MOS tube is connected with the power supply end,
the source electrode of the fourth MOS tube is connected with the public end,
when the output of the second signal output end and the fourth signal output end of the main control circuit is at a high level, the third MOS tube or the fourth MOS tube is controlled to be conducted, and the other path of the LED lamp strip is lighted;
when the output of the second signal output end and the fourth signal output end of the main control circuit is at a low level, the third MOS tube and the fourth MOS tube are controlled to be cut off.
In some implementations, the second switching circuit further includes a fifth resistor, a ninth resistor, and a third diode, wherein,
the fifth resistor is connected in series with the ninth resistor and then connected in parallel with the third diode,
one end of the fifth resistor and the anode of the third diode are connected with the grid electrode of the third MOS tube, the cathode of the third diode is connected with one end of the ninth resistor,
the other end of the ninth resistor is connected with a signal output end of the second distributor.
In some embodiments, the second switching circuit further comprises a sixth resistor, a tenth resistor, and a fourth diode, wherein,
the sixth resistor is connected in series with the tenth resistor and then connected in parallel with the fourth diode,
one end of the sixth resistor and the anode of the fourth diode are connected with the grid electrode of the fourth MOS tube, the cathode of the third diode is connected with one end of the tenth resistor,
the other end of the tenth resistor is connected with the other signal output end of the second distributor.
In some embodiments, the LED strip comprises at least a series-connected LED strip and a parallel-connected LED strip.
The utility model discloses an LED drive control circuit shared by 2 wires and 3 wires with adjustable temperature, which comprises a main control circuit, a first switch circuit, a second switch circuit and an LED lamp strip, wherein the main control circuit is used for outputting pulse signals; the anode of the LED lamp strip is connected with the power end, one negative electrode of the LED lamp strip is connected with the output end of the first switch circuit, and the other negative electrode of the LED lamp strip is connected with the output end of the second switch circuit; when any pulse signal output by the main control circuit is at a high level, the first switch circuit or the second switch circuit is triggered to drive any LED lamp strip. Compared with the prior art, the main control circuit capable of triggering two connection modes is arranged, the output of the main control circuit can be used for adjusting the pulse signals of color temperature and brightness, and the LED capable of effectively solving the two color temperature has two connection modes: 1.3 lines (common anode and common cathode); 2.2 wires (LEDs of two color temperatures are antiparallel); two controllers are needed to match the two connection modes of LEDs, so that the mounting and the use become complicated.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic circuit diagram of one embodiment of an LED drive control circuit for providing 2-wire and 3-wire common temperature adjustable control in accordance with the present utility model;
FIG. 2 is a schematic circuit diagram of another embodiment of an LED light strip provided by the present utility model;
FIG. 3 is a timing diagram of an embodiment of an LED drive control circuit for 2-wire and 3-wire common temperature adjustable circuits according to the present utility model.
Description of the embodiments
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.
As shown in fig. 1, in a first embodiment of the LED driving control circuit shared by 2 wires and 3 wires, the LED driving control circuit 10 shared by 2 wires and 3 wires includes a main control circuit 101, a first switch circuit 102, a second switch circuit 103, and an LED light strip 104.
The main control circuit 101 has the functions of operation, signal processing and pulse signal output;
the first switch circuit 102 is configured to receive the pulse signal output by the main control circuit 101, and control the MOS transistor therein to be turned on or off according to the input pulse signal;
the second switch circuit 103 is configured to receive the pulse signal output by the main control circuit 101, and control the MOS transistor therein to be turned on or off according to the input pulse signal;
the LED strip 104 is used to form a ground loop with the first switch circuit 102 or the second switch circuit 103 that is turned on.
Specifically, the main control circuit 101 is configured within the LED drive control circuit for outputting a pulse signal (corresponding to a high level or a low level);
further, an input end of the first switch circuit 102 is connected with a group of output ends of the main control circuit 101, and is used for receiving pulse signals;
further, an input end of the second switch circuit 103 is connected with another set of output ends of the main control circuit 101, and is used for receiving pulse signals;
the anode of the LED strip 104 is connected to a power terminal (corresponding to Vbus terminal), for receiving an input power signal,
one negative electrode of the LED strip 104 is connected to the output terminal of the first switch circuit 102,
the other negative electrode of the LED lamp strip 104 is connected with the output end of the second switch circuit 103;
when any pulse signal output by the main control circuit 101 is at a low level, the first switch circuit 102 or the second switch circuit 103 is controlled to be turned off, and no loop is formed between the first switch circuit and the LED lamp strip 104;
when any pulse signal output by the main control circuit 101 is at a high level, the first switch circuit 102 or the second switch circuit 103 is triggered to drive any LED light strip 104.
By using the technical scheme, the main control circuit 101 capable of triggering two connection modes is arranged, and outputs pulse signals capable of adjusting color temperature and brightness by using the control circuit, so that the problem that two connection modes exist in an LED with two color temperatures can be effectively solved: 1.3 lines (common anode and common cathode); 2.2 wires (LEDs of two color temperatures are antiparallel); two controllers are needed to match the two connection modes of LEDs, so that the mounting and the use become complicated.
In some embodiments, in order to improve the driving performance of the control circuit, as shown in fig. 1, a main controller MCU may be provided in the main control circuit 101, which has the functions of operation and pulse signal output.
Specifically, the output end of the main controller MCU is connected to the input ends of the first switch circuit 102 and the second switch circuit 103, respectively, and is used for outputting pulse signals for triggering or closing the first switch circuit 102 and the second switch circuit 103.
In some embodiments, as shown in fig. 1, to improve the switching performance of the control circuit, a first distributor U1, a first MOS transistor Q1 and a second MOS transistor Q2 may be disposed in the first switching circuit 102,
the first distributor U1 is configured to receive the pulse signal output by the main control circuit 101, and perform operation and distribution processing on the input pulse signal;
the first MOS transistor Q1 and the second MOS transistor Q2 have the function of a switch and are N-channel MOS transistors.
Specifically, a first signal input end (corresponding to pin 2) of the first distributor U1 is connected to a first signal output end (corresponding to end P1) of the main controller MCU (belonging to the main control circuit 101) and is configured to receive a pulse signal output by the main control circuit 101;
the second signal input end (corresponding to 3 pins) of the first distributor U1 is connected with the third signal output end (corresponding to P3 end) of the main controller MCU (belonging to the main control circuit 101) and is used for receiving the pulse signal output by the main control circuit 101;
the grid electrode of the first MOS tube Q1 is connected with one signal output end (corresponding to 7 pins) of the first distributor U1, the grid electrode of the second MOS tube Q2 is connected with the other signal output end (corresponding to 5 pins) of the first distributor U1,
the source electrode of the first MOS tube Q1 and the drain electrode of the second MOS tube Q2 are connected with one negative electrode of the LED lamp strip 104,
the drain of the first MOS transistor Q1 is connected to a power supply terminal (corresponding to Vbus terminal),
the source electrode of the second MOS transistor Q2 is connected with the common end (corresponding to the GND end),
as shown in fig. 2 and 3, when the output of the first signal output end (corresponding to the P1 end) and the third signal output end (corresponding to the P3 end) of the main controller MCU (belonging to the main control circuit 101) is at a high level, the first MOS transistor Q1 or the second MOS transistor Q2 is controlled to be turned on, and one path of the LED light strip 104 and the drain-source electrode of the second MOS transistor Q2 are connected to the common end (corresponding to the GND end), so that one path of the LED light strip 104 is lighted;
when the output of the first signal output end (corresponding to the P1 end) and the third signal output end (corresponding to the P3 end) of the main controller MCU (belonging to the main control circuit 101) is at the low level, the first MOS transistor Q1 and the second MOS transistor Q2 are controlled to be turned off.
In some embodiments, in order to improve the switching performance of the first switching circuit 102, as shown in fig. 1, a third resistor R3, a seventh resistor R7 and a first diode D1 may be disposed in the first switching circuit 102, where the third resistor R3 and the seventh resistor R7 connected in series are driving resistors of the first MOS transistor Q1,
the first diode D1 is configured to pass the current signal through the first diode D1 when the first MOS transistor Q1 is turned off, so as to avoid impact of the current signal on the first MOS transistor Q1;
specifically, the third resistor R3 is connected in series with the seventh resistor R7 and then connected in parallel with the first diode D1,
one end of the third resistor R3 and the anode of the first diode D1 are connected with the grid electrode of the first MOS tube Q1, the cathode of the first diode D1 is connected with one end of the seventh resistor R7,
the other end of the seventh resistor R7 is connected to a signal output end (corresponding to pin 7) of the first distributor U1, that is, a pulse signal output by a signal output end (corresponding to pin 7) of the first distributor U1 is input to the gate of the first MOS transistor Q1 through the third resistor R3 and the seventh resistor R7, so as to control the switching state thereof.
In some embodiments, in order to improve the switching performance of the first switching circuit 102, as shown in fig. 1, a fourth resistor R4, an eighth resistor R8 and a second diode D2 may be disposed in the first switching circuit 102, where the fourth resistor R4 and the eighth resistor R8 connected in series are driving resistors of the second MOS transistor Q2,
the second diode D2 is configured to pass the current signal through the second diode D2 when the second MOS transistor Q2 is turned off, so as to avoid impact of the current signal on the second MOS transistor Q2;
specifically, the fourth resistor R4 is connected in series with the eighth resistor R8 and then connected in parallel with the second diode D2,
one end of the fourth resistor R4 and the anode of the second diode D2 are connected with the gate of the second MOS transistor Q2, the cathode of the first diode D1 is connected with one end of the eighth resistor R8,
the other end of the eighth resistor R8 is connected to the other signal output end (corresponding to the 5 pins) of the first distributor U1, that is, the pulse signal output by the other signal output end (corresponding to the 5 pins) of the first distributor U1 is input to the gate of the second MOS transistor Q2 through the fourth resistor R4 and the eighth resistor R8, so as to control the switching state thereof.
In some embodiments, in order to improve the switching performance of the control circuit, as shown in fig. 1, a second distributor U2, a third MOS transistor Q3 and a fourth MOS transistor Q4 may be disposed in the second switching circuit 103,
the second distributor U2 is configured to receive the pulse signal output by the main control circuit 101, and perform operation and distribution processing on the input pulse signal;
the third MOS transistor Q3 and the fourth MOS transistor Q4 have the function of a switch and are N-channel MOS transistors.
Specifically, the first signal input end of the second distributor U2 is connected with the second signal output end (corresponding to the P2 end) of the main controller MCU (belonging to the main control circuit 101),
the second signal input end of the second distributor U2 is connected with the fourth signal output end (corresponding to the P4 end) of the main controller MCU (belonging to the main control circuit 101),
the grid electrode of the third MOS tube Q3 is connected with a signal output end (corresponding to 7 pins) of the second distributor U2,
the grid electrode of the fourth MOS tube Q4 is connected with the other signal output end (corresponding to 5 pins) of the second distributor U2,
the source electrode of the third MOS tube Q3 and the drain electrode of the fourth MOS tube Q4 are connected with the other path of negative electrode of the LED lamp strip 104,
the drain electrode of the third MOS transistor Q3 is connected with the power supply end,
the source electrode of the fourth MOS transistor Q4 is connected with the common end,
when the output of the second signal output end (corresponding to the P2 end) and the fourth signal output end (corresponding to the P4 end) of the main controller MCU (belonging to the main control circuit 101) is at a high level, the third MOS transistor Q3 or the fourth MOS transistor Q4 is controlled to be turned on, and the other path of the LED light strip 104 and the drain-source electrode of the fourth MOS transistor Q4 are connected to the common end (corresponding to the GND end), so that the other path of the LED light strip 104 is turned on;
when the output of the second signal output end (corresponding to the P2 end) and the output of the fourth signal output end (corresponding to the P4 end) of the main controller MCU (belonging to the main control circuit 101) are at the low level, the third MOS transistor Q3 and the fourth MOS transistor Q4 are controlled to be turned off.
In some embodiments, in order to improve the switching performance of the second switching circuit 103, as shown in fig. 1, a fifth resistor R5, a ninth resistor R9, and a third diode D3 may be disposed in the second switching circuit 103, where the fifth resistor R5 and the ninth resistor R9 connected in series are driving resistors of the third MOS transistor Q3,
the third diode D3 is configured to pass the current signal through the third diode D3 when the third MOS transistor Q3 is turned off, so as to avoid impact of the current signal on the third MOS transistor Q3;
specifically, the fifth resistor R5 is connected in series with the ninth resistor R9 and then connected in parallel with the third diode D3,
one end of the fifth resistor R5 and the anode of the third diode D3 are connected with the grid electrode of the third MOS tube Q3, the cathode of the third diode D3 is connected with one end of the ninth resistor R9,
the other end of the ninth resistor R9 is connected to a signal output end (corresponding to pin 7) of the second distributor U2, that is, a pulse signal output by a signal output end (corresponding to pin 7) of the second distributor U2 is input to the gate of the third MOS transistor Q3 through the fifth resistor R5 and the ninth resistor R9, so as to control the switching state thereof.
In some embodiments, in order to improve the switching performance of the second switching circuit 103, as shown in fig. 1, a sixth resistor R6, a tenth resistor R10, and a fourth diode D4 may be disposed in the second switching circuit 103, where the sixth resistor R6 and the tenth resistor R10 connected in series are driving resistors of the fourth MOS transistor Q4,
the fourth diode D4 is configured to pass the current signal through the fourth diode D4 when the fourth MOS transistor Q4 is turned off, so as to avoid impact of the current signal on the fourth MOS transistor Q4;
specifically, the sixth resistor R6 is connected in series with the tenth resistor R10 and then connected in parallel with the fourth diode D4,
one end of a sixth resistor R6 and the anode of a fourth diode D4 are connected with the grid electrode of a fourth MOS tube Q4, the cathode of a third diode D3 is connected with one end of a tenth resistor R10,
the other end of the tenth resistor R10 is connected to the other signal output end (corresponding to pin 5) of the second distributor U2, that is, the pulse signal output by the other signal output end (corresponding to pin 5) of the second distributor U2 is input to the gate of the fourth MOS transistor Q4 through the sixth resistor R6 and the tenth resistor R10 to control the switching state thereof.
In some embodiments, as shown in fig. 1 and 2, the LED light strips 104 may be configured as series-connected LED light strips and parallel-connected LED light strips.
The negative electrode of the LED lamp strip connected in series or in parallel is connected with the drain electrode of the second MOS tube Q2 through the first resistor R1, when the second MOS tube Q2 is controlled to be conducted, a current signal of the Vbus end is connected to the common end through the LED lamp in the LED lamp strip connected in series or in parallel, the drain electrode-source electrode of the first resistor R1 and the drain electrode-source electrode of the second MOS tube Q2 to form a current loop;
the negative electrode of the LED lamp strip connected in series or in parallel is connected with the drain electrode of the fourth MOS tube Q4 through the second resistor R2, when the fourth MOS tube Q4 is controlled to be conducted, a current signal of the Vbus end is connected to the public end through the LED lamp in the LED lamp strip connected in series or in parallel, the second resistor R2 and the drain electrode-source electrode of the fourth MOS tube Q4, and a current loop is formed.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.
Claims (8)
1. An LED drive control circuit for 2-wire and 3-wire color temperature adjustable common use, comprising:
a main control circuit configured within the LED drive control circuit for outputting a pulse signal;
the input end of the first switch circuit is connected with a group of output ends of the main control circuit and is used for receiving the pulse signals;
the input end of the second switch circuit is connected with the other group of output ends of the main control circuit and is used for receiving the pulse signals;
the anode of the LED lamp strip is connected with the power supply end, one path of the cathode of the LED lamp strip is connected with the output end of the first switch circuit,
the other negative electrode of the LED lamp strip is connected with the output end of the second switch circuit;
when any pulse signal output by the main control circuit is at a high level, the first switch circuit or the second switch circuit is triggered to drive any path of LED lamp strip.
2. The LED drive control circuit for color temperature adjustable 2-wire and 3-wire sharing according to claim 1, wherein,
the first switch circuit at least comprises a first distributor, a first MOS tube and a second MOS tube,
the first signal input end of the first distributor is connected with the first signal output end of the main control circuit,
the second signal input end of the first distributor is connected with the third signal output end of the main control circuit,
the grid electrode of the first MOS tube is connected with a signal output end of the first distributor,
the grid electrode of the second MOS tube is connected with the other signal output end of the first distributor,
the source electrode of the first MOS tube and the drain electrode of the second MOS tube are connected with one negative electrode of the LED lamp strip,
the drain electrode of the first MOS tube is connected with the power supply end,
the source electrode of the second MOS tube is connected with the public end,
when the output of the first signal output end and the third signal output end of the main control circuit is high level, the first MOS tube or the second MOS tube is controlled to be conducted, and one path of the LED lamp strip is lighted;
when the output of the first signal output end and the third signal output end of the main control circuit is low level, the first MOS tube and the second MOS tube are controlled to be cut off.
3. The LED driving control circuit for 2-wire and 3-wire common for adjustable temperature according to claim 2, wherein,
the first switch circuit also comprises a third resistor, a seventh resistor and a first diode, wherein,
the third resistor is connected in series with the seventh resistor and then connected in parallel with the first diode,
one end of the third resistor and the anode of the first diode are connected with the grid electrode of the first MOS tube, the cathode of the first diode is connected with one end of the seventh resistor,
the other end of the seventh resistor is connected with a signal output end of the first distributor.
4. The LED drive control circuit for color temperature adjustable 2-wire and 3-wire sharing according to claim 3,
the first switch circuit further comprises a fourth resistor, an eighth resistor and a second diode, wherein,
the fourth resistor is connected in series with the eighth resistor and then connected in parallel with the second diode,
one end of the fourth resistor and the anode of the second diode are connected with the gate of the second MOS tube, the cathode of the first diode is connected with one end of the eighth resistor,
the other end of the eighth resistor is connected with the other signal output end of the first distributor.
5. The LED drive control circuit for color temperature adjustable 2-wire and 3-wire sharing according to claim 1, wherein,
the second switch circuit at least comprises a second distributor, a third MOS tube and a fourth MOS tube,
the first signal input end of the second distributor is connected with the second signal output end of the main control circuit,
the second signal input end of the second distributor is connected with the fourth signal output end of the main control circuit,
the grid electrode of the third MOS tube is connected with a signal output end of the second distributor,
the grid electrode of the fourth MOS tube is connected with the other signal output end of the second distributor,
the source electrode of the third MOS tube and the drain electrode of the fourth MOS tube are connected with the other path of negative electrode of the LED lamp strip,
the drain electrode of the third MOS tube is connected with the power supply end,
the source electrode of the fourth MOS tube is connected with the public end,
when the output of the second signal output end and the fourth signal output end of the main control circuit is at a high level, the third MOS tube or the fourth MOS tube is controlled to be conducted, and the other path of the LED lamp strip is lighted;
when the output of the second signal output end and the fourth signal output end of the main control circuit is at a low level, the third MOS tube and the fourth MOS tube are controlled to be cut off.
6. The LED drive control circuit for 2-wire and 3-wire common for adjustable temperature according to claim 5, wherein,
the second switch circuit also comprises a fifth resistor, a ninth resistor and a third diode, wherein,
the fifth resistor is connected in series with the ninth resistor and then connected in parallel with the third diode,
one end of the fifth resistor and the anode of the third diode are connected with the grid electrode of the third MOS tube, the cathode of the third diode is connected with one end of the ninth resistor,
the other end of the ninth resistor is connected with a signal output end of the second distributor.
7. The LED drive control circuit for color temperature adjustable 2-wire and 3-wire sharing according to claim 6, wherein,
the second switching circuit further comprises a sixth resistor, a tenth resistor and a fourth diode, wherein,
the sixth resistor is connected in series with the tenth resistor and then connected in parallel with the fourth diode,
one end of the sixth resistor and the anode of the fourth diode are connected with the grid electrode of the fourth MOS tube, the cathode of the third diode is connected with one end of the tenth resistor,
the other end of the tenth resistor is connected with the other signal output end of the second distributor.
8. The LED drive control circuit for color temperature adjustable 2-wire and 3-wire sharing according to any one of claims 1-7,
the LED lamp strip at least comprises an LED lamp strip connected in series and an LED lamp strip connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321643569.0U CN220402001U (en) | 2023-06-27 | 2023-06-27 | LED drive control circuit capable of adjusting color temperature and sharing 2 lines and 3 lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321643569.0U CN220402001U (en) | 2023-06-27 | 2023-06-27 | LED drive control circuit capable of adjusting color temperature and sharing 2 lines and 3 lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220402001U true CN220402001U (en) | 2024-01-26 |
Family
ID=89609660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321643569.0U Active CN220402001U (en) | 2023-06-27 | 2023-06-27 | LED drive control circuit capable of adjusting color temperature and sharing 2 lines and 3 lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220402001U (en) |
-
2023
- 2023-06-27 CN CN202321643569.0U patent/CN220402001U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10264631B1 (en) | Light set circuit with time control function | |
| TWI400986B (en) | Light emitting diode driving circuit | |
| CN211181600U (en) | L ED display screen constant current driving device and its pre-charging circuit | |
| US8461765B2 (en) | LED driving device | |
| WO2015058423A1 (en) | Backlight driving circuit and liquid crystal display apparatus | |
| CN102708802B (en) | Light emitting diode (LED) display system | |
| WO2019080549A1 (en) | Led constant-current driving circuit and lamp | |
| CN219802629U (en) | Constant-voltage lamp strip multipath dimming circuit and lighting lamp | |
| CN220402001U (en) | LED drive control circuit capable of adjusting color temperature and sharing 2 lines and 3 lines | |
| CN111083826B (en) | LED drive circuit capable of adjusting brightness and color | |
| CN103052201A (en) | LED control circuit, LED illuminating device and short circuit protection method | |
| CN116647955A (en) | LED drive control circuit capable of adjusting color temperature and sharing 2 lines and 3 lines | |
| TWM493128U (en) | Pixel units and driving circuits | |
| CN108650755B (en) | Linear constant-current driving chip and multi-chip parallel LED lighting driving circuit | |
| CN103826347A (en) | Control apparatus and light source apparatus | |
| CN210042297U (en) | Lighting circuit | |
| US10455673B1 (en) | Light string with a non-extinguishing function and an independent LED blinking function | |
| CN103068127A (en) | Light-emitting diode (LED) lamp and bicolor LED adjustable light circuit | |
| CN208241944U (en) | A kind of double-colored temperature of digital-control type is without stroboscopic eye-protecting desk lamp | |
| CN203147684U (en) | LED lamp regulating control system | |
| CN221264015U (en) | Double-circuit LED adjusts luminance mixing of colors controlling means | |
| CN217307917U (en) | Double-wire double-color temperature control circuit | |
| CN220123106U (en) | Constant current control circuit for double light sources | |
| CN109245751A (en) | A kind of PNP or NPN input signal independence switch type power amplification plate | |
| CN215818685U (en) | LED lamp control circuit and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |