Circuit for RGBCW control of LED lamp

Abstract

The utility model discloses a circuit for RGBCW control of an LED lamp, which is characterized by comprising five paths of RGBCW control circuits for RGBCW control of the LED lamp, and a power supply circuit for providing 3.3 V voltage to a WIFI or Bluetooth module, the circuit has the characteristic of being externally connected with a controller to control the LED lamp, and also has the function of directly controlling the LED lamp through a mobile phone APP, so that the effects of smart home and smart remote control are realized. Meanwhile, the system also has the following characteristics and advantages: cooperation driving and lamp finished product authentication are simple, connection is convenient, intelligent control is realized, low-voltage design is realized, and safety and reliability are realized; a traditional lamp is upgraded to an intelligent control lamp, remote control can be achieved, and wireless on / off, brightness adjustment, color temperature adjustment and lamp group control of the lamp are achieved. The market use of the product is accelerated, the cost is reduced, and the research and development period is shortened.

Description

Technical Field

[0001] This utility model relates to the technical field of LED lights, and in particular to a circuit for RGBCW control of LED lights. Background Technology

[0002] LEDs are light-emitting semiconductor components that emit light in colors such as red, yellow, blue, green, and white. Their basic structure consists of a piece of electroluminescent semiconductor material placed on a lead frame, and then sealed with epoxy resin to protect the internal core wires. Therefore, LEDs have good shock resistance.

[0003] Against the backdrop of renewed concerns about global energy shortages, energy conservation is a crucial issue we face in the future. In the lighting field, the application of LED lighting products is attracting worldwide attention. As a new type of green light source, LED is bound to be the trend of future development.

[0004] Currently, most LED lights are controlled by various ordinary switches to turn them on and off. The brightness of the light cannot be adjusted according to the environment, and the switch wiring is cumbersome and not suitable for people to control the lights from a distance. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a circuit for remote intelligent control of LED lights using an external controller.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] A circuit for controlling RGBCW of LED lights includes five RGBCW control lines for controlling RGBCW of LED lights, and a power supply line that provides 3.3V voltage to a WIFI or Bluetooth module.

[0008] The RGBCW control circuit includes: control chip U2, inductor L5, transformer L6, capacitor C9, capacitor C10, capacitor C11, capacitor C13, capacitor C14, resistor R8, resistor R10, resistor R15, resistor R16, resistor R17, resistor R18, resistor R19, RC network compensation circuit, RCD spike absorption circuit, and MOSFET switching circuit.

[0009] The first and eighth pins of the control chip U2 are connected to capacitors C9 and C11, respectively. Capacitor C13 is connected to transformer L6, and one end of capacitor C13 is connected to one end of capacitor C9. The second pin of the control chip U2 is connected to resistors R10 and R16, respectively. The third pin of the control chip U2 is connected to the RC network compensation circuit and capacitor C14, respectively. The fourth pin of the control chip U2 is connected to resistor R17, and one end of resistors R18 and R19 is connected to one end of resistor R17, respectively. The fifth pin of the control chip U2 is connected to resistors R8 and R18, respectively. One end of capacitor C10 is connected to one end of resistor R8. The sixth and seventh pins of the control chip U2 are connected to the MOSFET switching circuit, and the MOSFET switching circuit is connected to inductor L5 and RCD spike absorption circuit, respectively.

[0010] In a preferred embodiment of this utility model, the RC network compensation circuit includes a resistor R12 and a capacitor C15 connected to the resistor R12.

[0011] In a preferred embodiment of this utility model, the RCD spike absorption circuit includes a diode D2, and a resistor R6 and a capacitor C8 connected in parallel with the diode D2.

[0012] In a preferred embodiment of this utility model, resistors R13 and R14 are connected to the MOS transistor switching circuit.

[0013] In a preferred embodiment of this utility model, the MOS transistor switching circuit includes a switching transistor Q1, resistors R7 and R11 connected to one end of the switching transistor Q1, and resistors R9 and capacitor C12 connected to the other end of the switching transistor Q1.

[0014] In a preferred embodiment of this utility model, the power supply line includes: a control chip U1, a diode D1, an inductor L1, a transformer L3, a capacitor C9, a capacitor C1, a capacitor C2, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, and an LC choke circuit.

[0015] The first and sixth pins of the control chip U1 are connected to the capacitor C2. The third pin of the control chip U1 is connected to the resistors R2 and R4 respectively. The fourth and fifth pins of the control chip U1 are connected to the resistor R5. The fifth pin of the control chip U1 is connected to the transformer L3, the capacitor C7, and the capacitor C1 respectively. The other end of the transformer L3 is connected to one end of the capacitor C6. The sixth pin of the control chip U1 is connected to the diode D1, the capacitor C5, the inductor L1, and the resistor R1 respectively. The other end of the capacitor C5 is connected to one end of the resistor R3. The other end of the resistor R1 is connected to the other end of the capacitor C1. The other end of the inductor L1 is connected to the LC choke circuit.

[0016] In a preferred embodiment of this utility model, the LC choke circuit includes an inductor L2, a capacitor C3 connected to one end of the inductor L2, a capacitor C4 connected to the other end of the inductor L2, and an inductor L4 connected to the other ends of the capacitors C3 and C4.

[0017] The beneficial effects of this utility model are: the circuit features external controller control for LED lighting fixtures, and also allows direct control of LED lighting fixtures via a mobile app, thus achieving smart home and intelligent remote control effects. It also has the following characteristics and advantages: simple driver and lighting fixture certification, convenient connection, intelligent control, low-voltage design, and safety and reliability; it upgrades traditional lighting fixtures to intelligent control fixtures, enabling remote control, wireless on / off switching, brightness adjustment, color temperature adjustment, and group control of lighting fixtures; it accelerates product market launch, reduces costs, and shortens the R&D cycle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the RGBCW control circuit in a circuit for RGBCW control of LED lights according to this utility model;

[0019] Figure 2 This is a schematic diagram of the RGBCW control circuit in a circuit for RGBCW control of LED lights according to this utility model. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0021] Reference Figures 1 to 2 A circuit for controlling RGBCW of LED lights includes five RGBCW control lines for controlling RGBCW of LED lights, and a power supply line that provides 3.3V voltage to the WIFI or Bluetooth module.

[0022] The RGBCW control circuit includes: control chip U2, inductor L5, transformer L6, capacitor C9, capacitor C10, capacitor C11, capacitor C13, capacitor C14, resistor R8, resistor R10, resistor R15, resistor R16, resistor R17, resistor R18, resistor R19, RC network compensation circuit, RCD spike absorption circuit, and MOSFET switching circuit.

[0023] The first and eighth pins of the control chip U2 are connected to capacitors C9 and C11, respectively. Capacitor C13 is connected to transformer L6, and one end of capacitor C13 is connected to one end of capacitor C9. The second pin of the control chip U2 is connected to resistors R10 and R16, respectively. The third pin of the control chip U2 is connected to the RC network compensation circuit and capacitor C14, respectively. The fourth pin of the control chip U2 is connected to resistor R17, and one end of resistors R18 and R19 is connected to one end of resistor R17, respectively. The fifth pin of the control chip U2 is connected to resistors R8 and R18, respectively. One end of capacitor C10 is connected to one end of resistor R8. The sixth and seventh pins of the control chip U2 are connected to the MOSFET switching circuit, and the MOSFET switching circuit is connected to inductor L5 and RCD spike absorption circuit, respectively.

[0024] In this scheme, the RC network compensation circuit includes a resistor R12 and a capacitor C15 connected to the resistor R12.

[0025] In this scheme, the RCD spike absorption circuit includes a diode D2, and a resistor R6 and a capacitor C8 connected in parallel with the diode D2.

[0026] In this scheme, resistors R13 and R14 are connected to the MOS transistor switching circuit respectively.

[0027] In this scheme, the MOS transistor switching circuit includes a switching transistor Q1, resistors R7 and R11 connected to one end of the switching transistor Q1, and resistors R9 and capacitor C12 connected to the other end of the switching transistor Q1.

[0028] In this solution, the power supply line includes: control chip U1, diode D1, inductor L1, transformer L3, capacitor C9, capacitor C1, capacitor C2, capacitor C4, capacitor C5, capacitor C6, capacitor C7, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, and LC choke circuit.

[0029] The first and sixth pins of the control chip U1 are connected to the capacitor C2. The third pin of the control chip U1 is connected to the resistors R2 and R4 respectively. The fourth and fifth pins of the control chip U1 are connected to the resistor R5. The fifth pin of the control chip U1 is connected to the transformer L3, the capacitor C7, and the capacitor C1 respectively. The other end of the transformer L3 is connected to one end of the capacitor C6. The sixth pin of the control chip U1 is connected to the diode D1, the capacitor C5, the inductor L1, and the resistor R1 respectively. The other end of the capacitor C5 is connected to one end of the resistor R3. The other end of the resistor R1 is connected to the other end of the capacitor C1. The other end of the inductor L1 is connected to the LC choke circuit.

[0030] In this scheme, the LC choke circuit includes an inductor L2, a capacitor C3 connected to one end of the inductor L2, a capacitor C4 connected to the other end of the inductor L2, and an inductor L4 connected to the other ends of the capacitors C3 and C4.

[0031] The aforementioned RGBCW control circuit, after receiving the input DC voltage, is transformed by transformer L6 and filtered by electrolytic capacitor C13, outputting a smooth and stable DC voltage. This voltage is supplied to the VDD pin of control chip U2 via capacitors C9 and C11, and simultaneously provides the internal startup voltage to control chip U2 via its VIN pin. Meanwhile, resistors R10 on the five different lines are connected to GPIO pins to receive signals from an external controller, thereby controlling each color channel. When control chip U2 is operating normally, the dimming signal is fed to its internal components via external resistor R10 for mixing, comparison, and amplification, ultimately controlling the dimming and color adjustment of the LED load. Resistor R12 and capacitor C15 form an RC network compensation circuit to adaptively identify the stability of the internal voltage and current. The IFB pin of control chip U2 outputs a constant current through bias resistors R17, R18, and R19. The VFB pin of control chip U2 is connected to upper bias resistor R8, lower bias resistor R15, and output filter capacitor C10. After voltage feedback, the output voltage is then fed back. A stable DC voltage is supplied to the LED load; inductor L5 is a step-down power inductor; resistor R6, capacitor C8, and diode D2 form an RCD spike absorption circuit to suppress the voltage spike generated during the switching of transistor Q1; resistor R7 is the gate power supply resistor for transistor Q1, and resistor R11 is the source bias resistor for the gate of transistor Q1, which stabilizes the operating point of transistor Q1; resistor R9 and capacitor C12 form a source-drain absorption circuit for transistor Q1; resistors R13 and R14 are sampling resistors to limit and stabilize the LED output current; thus realizing RGBCW control of the LED lamp.

[0032] The aforementioned power supply line, after receiving the input DC voltage, is stepped down by transformer L3 and filtered by capacitor C6, outputting a balanced and stable DC voltage. This voltage then powers the VIN pin of control chip U1 via resistor R5, capacitor C1, and resistor R1 to start the internal circuitry. Capacitor C2 serves as compensation between the BST and SW pins of control chip U1. The SW pin of control chip U1 is stepped down by step-down inductor L1, and after passing through an LC choke circuit composed of capacitors L2, L4, C3, and C4, a stable and balanced 3.3V voltage is output to supply the WIFI & Bluetooth module for intelligent control of the LED load. Resistors R2 and R4 form the upper and lower bias resistors for the FB pin of control chip U1, respectively.

[0033] In summary, the circuit features both external controller support for LED lighting and direct control via a mobile app, enabling smart home and remote control. It also boasts the following advantages: simple driver and lighting fixture certification, convenient connection, intelligent control, low-voltage design, and high safety and reliability; it upgrades traditional lighting fixtures to smart control, enabling wireless on / off switching, brightness adjustment, color temperature adjustment, and group control; it accelerates product market entry, reduces costs, and shortens the R&D cycle.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A circuit for controlling the RGBCW of an LED lamp, characterized in that, It includes five RGBCW control lines for LED light RGBCW control, and a power supply line that provides 3.3V voltage to the WIFI or Bluetooth module; The RGBCW control circuit includes: control chip U2, inductor L5, transformer L6, capacitor C9, capacitor C10, capacitor C11, capacitor C13, capacitor C14, resistor R8, resistor R10, resistor R15, resistor R16, resistor R17, resistor R18, resistor R19, RC network compensation circuit, RCD spike absorption circuit, and MOSFET switching circuit. The first and eighth pins of the control chip U2 are connected to capacitors C9 and C11, respectively. Capacitor C13 is connected to transformer L6, and one end of capacitor C13 is connected to one end of capacitor C9. The second pin of the control chip U2 is connected to resistors R10 and R16, respectively. The third pin of the control chip U2 is connected to the RC network compensation circuit and capacitor C14, respectively. The fourth pin of the control chip U2 is connected to resistor R17, and one end of resistors R18 and R19 is connected to one end of resistor R17, respectively. The fifth pin of the control chip U2 is connected to resistors R8 and R18, respectively. One end of capacitor C10 is connected to one end of resistor R8. The sixth and seventh pins of the control chip U2 are connected to the MOSFET switching circuit, and the MOSFET switching circuit is connected to inductor L5 and RCD spike absorption circuit, respectively.

2. The circuit for RGBCW control of an LED lamp according to claim 1, characterized in that, The RC network compensation circuit includes a resistor R12 and a capacitor C15 connected to the resistor R12.

3. The circuit for RGBCW control of LED lights according to claim 2, characterized in that, The RCD spike absorption circuit includes a diode D2, and a resistor R6 and a capacitor C8 connected in parallel with the diode D2.

4. The circuit for RGBCW control of an LED lamp according to claim 3, characterized in that, The MOS transistor switching circuit is connected to resistors R13 and R14 respectively.

5. The circuit for RGBCW control of an LED lamp according to claim 4, characterized in that, The MOS transistor switching circuit includes a switching transistor Q1, resistors R7 and R11 connected to one end of the switching transistor Q1, and resistors R9 and capacitor C12 connected to the other end of the switching transistor Q1.

6. A circuit for RGBCW control of an LED lamp according to any one of claims 1 to 5, characterized in that, The power supply line includes: control chip U1, diode D1, inductor L1, transformer L3, capacitor C9, capacitor C1, capacitor C2, capacitor C4, capacitor C5, capacitor C6, capacitor C7, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, and LC choke circuit. The first and sixth pins of the control chip U1 are connected to the capacitor C2. The third pin of the control chip U1 is connected to the resistors R2 and R4 respectively. The fourth and fifth pins of the control chip U1 are connected to the resistor R5. The fifth pin of the control chip U1 is connected to the transformer L3, the capacitor C7, and the capacitor C1 respectively. The other end of the transformer L3 is connected to one end of the capacitor C6. The sixth pin of the control chip U1 is connected to the diode D1, the capacitor C5, the inductor L1, and the resistor R1 respectively. The other end of the capacitor C5 is connected to one end of the resistor R3. The other end of the resistor R1 is connected to the other end of the capacitor C1. The other end of the inductor L1 is connected to the LC choke circuit.

7. The circuit for RGBCW control of an LED lamp according to claim 6, characterized in that, The LC choke circuit includes an inductor L2, a capacitor C3 connected to one end of the inductor L2, a capacitor C4 connected to the other end of the inductor L2, and an inductor L4 connected to the other ends of the capacitors C3 and C4.

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