CN215773653U - Single-wire three-channel high-power LED drive control module - Google Patents
Single-wire three-channel high-power LED drive control module Download PDFInfo
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- CN215773653U CN215773653U CN202122230291.1U CN202122230291U CN215773653U CN 215773653 U CN215773653 U CN 215773653U CN 202122230291 U CN202122230291 U CN 202122230291U CN 215773653 U CN215773653 U CN 215773653U
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Abstract
The utility model discloses a single-wire three-channel high-power LED driving control module which comprises a control circuit, a driving circuit, an input interface, an output interface, an R-LED interface, a G-LED interface and a B-LED interface. The module uses a single-wire serial chip WS2811 as a control chip and utilizes an MOS tube to expand current, thereby realizing the function of single-wire cascade control and driving a three-channel high-power LED and solving the problem that the WS2811 can not directly drive the high-power LED.
Description
Technical Field
The utility model relates to the technical field of LED drive control, in particular to a single-wire three-channel high-power LED drive control module.
Background
The serial full-color LED is widely applied to light-emitting character lamp strings, full-color lamp bars, full-color guardrail tubes, full-color point light sources, LED pixel screens, LED special-shaped screens, LED horse race lamps and various LED decorative lamps.
At present, a full-color LED is generally directly driven by a serial chip WS2811, but the WS2811 single-channel driving current is only 17.5mA at most, and the driving current is small, so that the high-power LED cannot be directly driven.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a single-wire three-channel high-power LED driving control module, which aims to provide an LED driving control module to realize the functions of single-wire cascade control and driving a three-channel high-power LED.
In order to achieve the purpose, the utility model adopts the following technical scheme: a single-wire three-channel high-power LED driving control module comprises a control circuit, a driving circuit, an input interface, an output interface, an R-LED interface, a G-LED interface and a B-LED interface; the input interface is connected with the control circuit and used for receiving a serial control signal of the previous stage; the output interface is connected with the control circuit and used for sending a serial control signal to the next stage; the driving circuit is connected with the control circuit and used for increasing the LED driving current; the R-LED interface, the G-LED interface and the B-LED interface are connected with the driving circuit and used for outputting three paths of driving currents to the LEDs.
The input interface uses a KF128-3P direct-insert type wiring terminal, a first pin of the terminal is connected to VCC, a second pin of the terminal is connected to the input end of the control circuit, and a third pin of the terminal is connected to GND.
The output interface uses a KF128-3P direct-insert type wiring terminal, a first pin of the terminal is connected to VCC, a second pin of the terminal is connected to the output end of the control circuit, and a third pin of the terminal is connected to GND.
The R-LED interface, the G-LED interface and the B-LED interface all use KF128-2P direct plug-in type wiring terminals which are respectively an R terminal, a G terminal and a B terminal. The first pin of the R terminal is connected to VCC, the second pin of the R terminal is connected to the output end of the R driving unit, the first pin of the G terminal is connected to VCC, the second pin of the G terminal is connected to the output end of the G driving unit, the first pin of the B terminal is connected to VCC, and the second pin of the B terminal is connected to the output end of the B driving unit.
The driving circuit consists of three identical driving units, namely an R driving unit, a G driving unit and a B driving unit. Each driving unit comprises two MOS tubes, three resistors, a light emitting diode and a Schottky diode, wherein a grid electrode of the first MOS tube is connected to a drain electrode of the second MOS tube, a source electrode of the first MOS tube is connected to GND, a drain electrode of the first MOS tube is connected to a cathode of the light emitting diode, an anode of the light emitting diode is connected to one end of the first resistor, the other end of the first resistor is connected to VCC, a grid electrode of the second MOS tube is connected to an RGB control pin of WS2811, a source electrode of the second MOS tube is connected to GND, a drain electrode of the second MOS tube is connected to one end of the second resistor, the other end of the second resistor is connected to VCC, one end of the third resistor is connected to VCC, the other end of the third resistor is connected to a grid electrode of the second MOS tube, the Schottky diode is connected to a source electrode of the first MOS tube and the drain electrode of the first MOS tube in parallel, and the drain electrode of the first MOS tube is connected to a second pin of the LED interface terminal.
The control circuit comprises a single-wire serial control chip WS2811, a capacitor and three resistors, wherein one end of the first resistor is connected to VCC, the other end of the first resistor is connected to a VDD pin of the WS2811, one end of the second resistor is connected to a second pin of the input interface terminal, the other end of the second resistor is connected to a DI pin of the WS2811, one end of the third resistor is connected to a second pin of the output interface terminal, the other end of the third resistor is connected to a DO pin of the WS2811, an R pin of the WS2811 is connected to an input end of an R driving unit, a G pin of the WS2811 is connected to an input end of a G driving unit, a B pin of the WS2811 is connected to an input end of the B driving unit, a GND pin of the WS2811 is connected to GND, and the capacitor is connected to the VDD and GND pins of the WS2811 in parallel.
Compared with the prior art, the utility model has the following beneficial effects: according to the single-wire three-channel high-power LED driving control module, the single-wire serial chip WS2811 is used as a control chip, and the MOS tube is used for current expansion, so that the functions of single-wire cascade control and driving of the three-channel high-power LED are realized, and the problem that the WS2811 cannot directly drive the high-power LED is solved.
Drawings
Fig. 1 is a schematic diagram of a module structure according to the present invention.
Fig. 2 is a driving unit circuit of the present invention.
Fig. 3 is a control circuit of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a single-wire three-channel high-power LED driving control module, which comprises a control circuit 7, a driving circuit 4, an input interface 5, an output interface 6, an R-LED interface 1, a G-LED interface 2, and a B-LED interface 3; the input interface 5 is connected with the control circuit 7 and used for receiving a serial control signal of the previous stage; the output interface 6 is connected with the control circuit 7 and used for sending a serial control signal to the next stage; the driving circuit 4 is connected with the control circuit 7 and is used for increasing the LED driving current; the R-LED interface 1, the G-LED interface 2 and the B-LED interface 3 are connected with the driving circuit 4 and used for outputting three paths of driving currents to the LEDs.
The input interface 5 uses a KF128-3P in-line terminal, a first pin of which is connected to VCC, a second pin of which is connected to the input of the control circuit 7, and a third pin of which is connected to GND.
The output interface 6 uses a KF128-3P direct-insert type wiring terminal, a first pin of the terminal is connected to VCC, a second pin of the terminal is connected to the output end of the control circuit 7, and a third pin of the terminal is connected to GND.
The R-LED interface 1, the G-LED interface 2 and the B-LED interface 3 all use KF128-2P direct-insertion type wiring terminals which are respectively an R terminal, a G terminal and a B terminal. The first pin of the R terminal is connected to VCC, the second pin of the R terminal is connected to the output of the R driving unit 8, the first pin of the G terminal is connected to VCC, the second pin of the G terminal is connected to the output of the G driving unit 9, the first pin of the B terminal is connected to VCC, and the second pin of the B terminal is connected to the output of the B driving unit 10.
The driving circuit 4 is composed of three identical driving units, namely an R driving unit 8, a G driving unit 9 and a B driving unit 10.
As shown in fig. 2, the driving unit is composed of two MOS transistors, three resistors, the LED comprises a light emitting diode and a Schottky diode, wherein a grid electrode of a first MOS tube Q1 is connected to a drain electrode of a second MOS tube Q2, a source electrode of the first MOS tube Q1 is connected to GND, a drain electrode of the first MOS tube Q1 is connected to a cathode electrode of the light emitting diode LED1, an anode electrode of the light emitting diode LED1 is connected to one end of a first resistor R4, the other end of the first resistor R4 is connected to VCC, a grid electrode of the second MOS tube Q2 is connected to an RGB control pin of WS2811, a source electrode of a second MOS tube Q2 is connected to GND, a drain electrode of the second MOS tube Q2 is connected to one end of a second resistor R5, the other end of the second resistor R5 is connected to VCC, one end of a third resistor R6 is connected to VCC, the other end of the third resistor R6 is connected to a grid electrode of the second MOS tube Q2, the Schottky diode D1 is connected in parallel to the source electrode of the first MOS tube Q1 and the drain electrode of the first MOS tube Q1, and a drain electrode of the first MOS tube Q1 is connected to a second pin of an LED interface terminal P1.
As shown in fig. 3, the control circuit is composed of a serial control chip WS2811, a capacitor and three resistors, one end of a first resistor R1 is connected to VCC, the other end of the first resistor R1 is connected to the VDD pin of WS 2811U 1, one end of a second resistor R2 is connected to the second pin of the input interface terminal P2, the other end of a second resistor R2 is connected to the DI pin of WS2811, one end of a third resistor R3 is connected to the second pin of the output interface terminal P3, the other end of the third resistor R3 is connected to the DO pin of WS 2811U 1, the R pin of WS 2811U 1 is connected to the input terminal of the R driving unit, the G pin of WS 2811U 1 is connected to the input terminal of the G driving unit, the B pin of WS2811 is connected to the input terminal of the B driving unit, the GND pin of WS 2811U 1 is connected to, and a capacitor C1 is connected in parallel to GND and the VDD pin of WS 2811U 1.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and are intended to be within the scope of the utility model.
Claims (8)
1. A single-wire three-channel high-power LED driving control module is characterized by comprising a control circuit, a driving circuit, an input interface, an output interface, an R-LED interface, a G-LED interface and a B-LED interface; the input interface is connected with the control circuit and used for receiving a serial control signal of the previous stage; the output interface is connected with the control circuit and used for sending a serial control signal to the next stage; the driving circuit is connected with the control circuit and used for increasing the LED driving current; the R-LED interface, the G-LED interface and the B-LED interface are connected with the driving circuit and used for outputting three paths of driving currents to the LEDs.
2. The single-wire three-channel high-power LED driving control module according to claim 1, wherein the input interface uses a KF128-3P in-line terminal, a first pin of the terminal is connected to VCC, a second pin of the terminal is connected to the input end of the control circuit, and a third pin of the terminal is connected to GND.
3. The single-wire three-channel high-power LED driving control module according to claim 1, wherein the output interface uses a KF128-3P in-line terminal, a first pin of the terminal is connected to VCC, a second pin of the terminal is connected to the output end of the control circuit, and a third pin of the terminal is connected to GND.
4. The single-wire three-channel high-power LED driving control module according to claim 1, wherein KF128-2P direct-insert type wiring terminals are used for the R-LED interface, the G-LED interface and the B-LED interface and are respectively an R terminal, a G terminal and a B terminal.
5. The single-wire three-channel high-power LED driving control module according to claim 4, wherein a first pin of the R terminal is connected to VCC, and a second pin of the R terminal is connected to the output end of the R driving unit; a first pin of the G terminal is connected to VCC, and a second pin of the G terminal is connected to the output end of the G driving unit; and a first pin of the B terminal is connected to VCC, and a second pin of the B terminal is connected to the output end of the B driving unit.
6. The single-wire three-channel high-power LED driving control module according to claim 1, wherein the driving circuit is composed of three identical driving units, namely an R driving unit, a G driving unit and a B driving unit.
7. The single-wire three-channel high-power LED driving control module as claimed in claim 6, the driving unit is characterized by comprising two MOS tubes, three resistors, a light emitting diode and a Schottky diode, wherein the grid electrode of the first MOS tube is connected to the drain electrode of the second MOS tube, the source electrode of the first MOS tube is connected to GND, the drain electrode of the first MOS tube is connected to the cathode of the light emitting diode, the anode of the light emitting diode is connected to one end of the first resistor, the other end of the first resistor is connected to VCC, the grid electrode of the second MOS tube is connected to the RGB control pin of WS2811, the source electrode of the second MOS tube is connected to GND, the drain electrode of the second MOS tube is connected to one end of the second resistor, the other end of the second resistor is connected to VCC, one end of the third resistor is connected to VCC, the other end of the third resistor is connected to the grid electrode of the second MOS tube, the Schottky diode is connected to the source electrode of the first MOS tube and the drain electrode of the first MOS tube in parallel, and the drain electrode of the first MOS tube is connected to the second pin of the LED interface terminal.
8. The single-wire three-channel high-power LED driving control module according to claim 1, wherein the control circuit comprises a single-wire serial control chip WS2811, a capacitor and three resistors, one end of the first resistor is connected to VCC, the other end of the first resistor is connected to the VDD pin of WS2811, one end of the second resistor is connected to the second pin of the input interface terminal, the other end of the second resistor is connected to the DI pin of WS2811, one end of the third resistor is connected to the second pin of the output interface terminal, the other end of the third resistor is connected to the DO pin of WS2811, the R pin of WS2811 is connected to the input end of the R driving unit, the G pin of WS2811 is connected to the input end of the G driving unit, the B pin of WS2811 is connected to the input end of the B driving unit, the GND pin of WS2811 is connected to GND, and the capacitor is connected to the VDD and GND pins of WS2811 in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122230291.1U CN215773653U (en) | 2021-09-15 | 2021-09-15 | Single-wire three-channel high-power LED drive control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122230291.1U CN215773653U (en) | 2021-09-15 | 2021-09-15 | Single-wire three-channel high-power LED drive control module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215773653U true CN215773653U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122230291.1U Active CN215773653U (en) | 2021-09-15 | 2021-09-15 | Single-wire three-channel high-power LED drive control module |
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| Country | Link |
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| CN (1) | CN215773653U (en) |
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2021
- 2021-09-15 CN CN202122230291.1U patent/CN215773653U/en active Active
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