Independent sub-control control circuit

Abstract

The utility model discloses an independent sub-control circuit. Comprising a first control chip, a second control chip, a first MOS tube, a second MOS tube, a third MOS tube, a fourth MOS tube, a first triode, a second triode, a main lamp body pure white light string, a main lamp body warm white light string, a base pure white light string and a base warm white light string. According to the utility model, the work of pure white light and warm white light at different positions of the lamp can be separately controlled by a single circuit, the grouping independent control is realized, and the integral light control is integrated into one circuit, so that the circuit cost can be effectively reduced, and the circuit can be better applied to an external controller.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to an independent control circuit. Background Technology

[0002] With social development and progress, smart lighting products are becoming increasingly popular, and users are placing higher demands on smart control products. In addition to meeting functional requirements, they not only require high cost-effectiveness but also convenient after-sales maintenance. Therefore, it's often necessary to choose an external controller for easier operation and replacement. If the controller is built into the lamp, it's inconvenient to replace or repair it when it malfunctions, requiring the entire lamp to be replaced, which increases costs. However, due to the shape of the lamps—some emit light from the top, some from the bottom, and some with different color temperatures (i.e., the same area can be divided into cool white and warm white light)—several separate control circuits are needed. Furthermore, because the controller is external, there are more and longer wiring connections between the lamp body and the controller, leading to increased costs and more complex wiring processes. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an independent control circuit that can simultaneously control two light-emitting lines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An independent control circuit includes a first control chip, a second control chip, a first MOSFET, a second MOSFET, a third MOSFET, a fourth MOSFET, a first transistor, a second transistor, a main lamp body plain white light string, a main lamp body warm white light string, a base plain white light string, and a base warm white light string.

[0006] The OUTR pin of the first control chip is connected to the power supply through the second resistor and is connected to the gate of the first MOSFET. The drain of the first MOSFET is connected to the 5V power supply through the first resistor and is connected to the gate of the second MOSFET. The drain of the second MOSFET is connected to the warm white light string of the main lamp body through the first output resistor. The OUTG pin of the first control chip is connected to the power supply through the third resistor and is connected to the gate of the third MOSFET. The drain of the third MOSFET is connected to the 5V power supply through the fourth resistor and is connected to the gate of the fourth MOSFET. The drain of the fourth MOSFET is connected to the positive white light string of the main lamp body through the second output resistor. The sources of the first MOSFET, the second MOSFET, the third MOSFET, and the fourth MOSFET are all grounded.

[0007] The OUTR pin of the second control chip is connected to the base of the first transistor through the fifth resistor. The base of the first transistor is connected to its emitter through the sixth resistor. The emitter of the first transistor is connected to the warm white light string of the base through the third output resistor. The OUTG pin of the second control chip is connected to the base of the second transistor through the seventh resistor. The base of the second transistor is connected to its emitter through the eighth resistor. The emitter of the second transistor is connected to the cool white light string of the base through the fourth output resistor. The collectors of both the first and second transistors are grounded.

[0008] By adopting the above solution, this utility model relies on a single circuit to control the operation of pure white light and warm white light at different positions of the lamp, realizing independent control of groups and integrating the overall lighting control into a single circuit. This can effectively reduce circuit costs and can be better applied to external controllers. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the circuit structure of an embodiment of the present invention. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0011] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0012] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0013] like Figure 1 As shown, this embodiment provides an independent control circuit, including a first control chip U1, a second control chip U2, a first MOSFET Q5, a second MOSFET Q1, a third MOSFET Q6, a fourth MOSFET Q2, a first transistor Q3, a second transistor Q4, a main lamp body LEDC (pure white light), a main lamp body LEDW (warm white light), a base LEDC1 (pure white light), and a base LEDW1 (warm white light).

[0014] The OUTR pin of the first control chip is connected to the power supply through the second resistor and is connected to the gate of the first MOSFET. The drain of the first MOSFET is connected to the 5V power supply through the first resistor and is connected to the gate of the second MOSFET. The drain of the second MOSFET is connected to the warm white light string of the main lamp body through the first output resistor. The OUTG pin of the first control chip is connected to the power supply through the third resistor and is connected to the gate of the third MOSFET. The drain of the third MOSFET is connected to the 5V power supply through the fourth resistor and is connected to the gate of the fourth MOSFET. The drain of the fourth MOSFET is connected to the positive white light string of the main lamp body through the second output resistor. The sources of the first MOSFET, the second MOSFET, the third MOSFET, and the fourth MOSFET are all grounded.

[0015] The OUTR pin of the second control chip is connected to the base of the first transistor through the fifth resistor. The base of the first transistor is connected to its emitter through the sixth resistor. The emitter of the first transistor is connected to the warm white light string of the base through the third output resistor. The OUTG pin of the second control chip is connected to the base of the second transistor through the seventh resistor. The base of the second transistor is connected to its emitter through the eighth resistor. The emitter of the second transistor is connected to the cool white light string of the base through the fourth output resistor. The collectors of both the first and second transistors are grounded.

[0016] The first and second control chips are both SW2811 chips.

[0017] When the specific circuit in this embodiment is working:

[0018] When controlling the warm white light path of the main lamp body, the signal DIN terminal (pin 6) of the first control chip U1 receives data transmitted from the controller. The data latch inside the first control chip U1 generates a duty cycle control signal at the first (OUTR) control terminal of the first control chip U1 based on the received data. Upon receiving a low-level RESET code, the first control chip U1 outputs the received PWM data pulse width to the OUTR pin. When the OUTR pin is low, VDD is connected from the second resistor R2 to the OUTR pin. At this time, the gate of the first MOSFET Q5 is low, and Q5 is cut off. The 5V voltage flows through the first resistor R1 to the gate of the second MOSFET Q1, turning Q1 on. The 24V voltage flows through the warm white light string LEDW of the main lamp body to the first input... The output resistor WW is then connected to ground through the second MOSFET Q1 to form a loop. Current flows through the compound semiconductor (i.e., the LED bead), and through the combination of electrons and holes, excess energy is released in the form of light, achieving the effect of emitting light, and the warm light turns on. When the OUTR pin is high, VDD is connected to the OUTR pin from the second resistor R2. At this time, the gate of the first MOSFET Q5 is high, and the MOSFET is turned on. The 5V voltage is connected to ground through the first resistor R1 to the first MOSFET Q5 to form a loop. Since the first MOSFET Q5 is turned on, the gate of the second MOSFET Q1 is low, and the second MOSFET Q1 is in the off state. The 24V voltage is connected to the first output resistor WW through the main lamp body warm white light string LEDW, but cannot be connected to ground through the second MOSFET Q1, so a loop cannot be formed, and the warm light is turned off.

[0019] Similarly, when controlling the main lamp's positive white light path, pin 6 (DIN) of the first control chip U1 receives data transmitted from the controller. The internal data latch generates a duty cycle control signal at pin 2 (OUTG) of the first control chip U1 based on the received data. Upon receiving a low-level RESET code, the first control chip U1 outputs the received PWM data pulse width to the OUTG pin. When the OUTG pin is low, VDD is connected from the third resistor R3 to the OUTG pin. At this time, the gate of the third MOSFET Q6 is low, and Q6 is cut off. The 5V voltage passes through the fourth resistor R4 to the gate of the fourth MOSFET Q2, turning Q2 on. The 24V voltage passes through the main lamp's positive white light string LEDC to the second output resistor RW and then through the... Four MOSFETs Q2 are connected to ground to form a circuit. Current flows through the compound semiconductor (i.e., the LED bead). Through the combination of electrons and holes, excess energy is released in the form of light, achieving the effect of emitting light, and the white light illuminates. When the OUTG pin is high, VDD is connected to the OUTG pin from the third resistor R3. At this time, the gate of the third MOSFET Q6 is high, and the third MOSFET Q6 is turned on. The 5V voltage is connected to ground through the third resistor R3 to the third MOSFET Q6 to form a circuit. Since the third MOSFET Q6 is turned on, the gate of the fourth MOSFET Q2 is low, and the fourth MOSFET Q2 is in the off state. The 24V voltage is connected to the second output resistor RW through the LED bead, but cannot be connected to ground through the fourth MOSFET Q2, so a circuit cannot be formed. At this time, the white light is turned off. Thus, the independent group control of the lights at the main lamp body is realized.

[0020] Regarding the independent control of the white light on the base, when controlling the warm white light path of the base, pin 6 (DIN) of the second control chip U2 receives data transmitted from the controller. The data latch inside the second control chip U2 generates a duty cycle control signal at pin 1 (OUTR) based on the received data. Upon receiving a low-level RESET code, the second control chip U2 outputs the received PWM pulse width to the OUTR pin. When the OUTR pin is low, the fifth resistor R5 is connected to the base of the first transistor Q3. The first transistor Q3 is a P-type transistor, and at this time, the base of the first transistor Q3 is low, and the first transistor Q3 is turned on. The 24V voltage flows through the base's warm white LED string (LEDW1) to the third output resistor (WW1), then through the first transistor (Q3) to ground, forming a circuit. Current flows through the compound semiconductor (LED beads), and through the combination of electrons and holes, excess energy is released as light, achieving the effect of emitting light. At this time, the base's warm white LED light illuminates. When the OUTR pin is high, the emitter and base of the first transistor (Q3) are connected through the sixth resistor (R6), and the base of the first transistor (Q3) is high, so Q3 is not conducting. The 24V voltage cannot flow through the base's warm white LED string (LEDW1) to the third output resistor (WW1) and cannot be connected to ground through the first transistor (Q3), thus failing to form a circuit. At this time, the warm white LED light is off.

[0021] When the control base is in the positive white light path, pin 6 (DIN) of the second control chip U2 receives data from the controller. The chip's internal data latch generates a duty cycle control signal at pin 1 (OUTG) based on the received data. Upon receiving a low-level RESET code, the chip outputs the received PWM data pulse width to the OUTG pin. When the OUTG pin is low, resistor R7 is connected to the base of the second transistor Q4. Since Q4 is a P-type transistor, its base is low, and Q4 is turned on. The 24V voltage flows through the positive light path of the base. The white LED string (LEDC1) is connected to the fourth output resistor (RW1) and then to ground via the second transistor (Q4) to form a circuit. Current flows through the compound semiconductor (LED beads), and through the combination of electrons and holes, excess energy is released in the form of light, achieving the effect of emitting light. At this time, the pure white light is on. When the OUTG pin is high, the emitter and base of the transistor are connected through resistor R8, and the base of the transistor is high. At this time, the second transistor (Q4) is not conducting. The 24V voltage through the base of the white LED string (LEDC1) to the fourth output resistor (RW1) cannot be connected to ground through the second transistor (Q4), so a circuit cannot be formed. At this time, the white light is off.

[0022] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A stand-alone control circuit, characterized by: It includes a first control chip, a second control chip, a first MOSFET, a second MOSFET, a third MOSFET, a fourth MOSFET, a first transistor, a second transistor, a main lamp body plain white light string, a main lamp body warm white light string, a base plain white light string, and a base warm white light string; The OUTR pin of the first control chip is connected to the power supply through the second resistor and is connected to the gate of the first MOSFET. The drain of the first MOSFET is connected to the 5V power supply through the first resistor and is connected to the gate of the second MOSFET. The drain of the second MOSFET is connected to the warm white light string of the main lamp body through the first output resistor. The OUTG pin of the first control chip is connected to the power supply through the third resistor and is connected to the gate of the third MOSFET. The drain of the third MOSFET is connected to the 5V power supply through the fourth resistor and is connected to the gate of the fourth MOSFET. The drain of the fourth MOSFET is connected to the positive white light string of the main lamp body through the second output resistor. The sources of the first MOSFET, the second MOSFET, the third MOSFET, and the fourth MOSFET are all grounded. The OUTR pin of the second control chip is connected to the base of the first transistor through the fifth resistor. The base of the first transistor is connected to its emitter through the sixth resistor. The emitter of the first transistor is connected to the warm white light string of the base through the third output resistor. The OUTG pin of the second control chip is connected to the base of the second transistor through the seventh resistor. The base of the second transistor is connected to its emitter through the eighth resistor. The emitter of the second transistor is connected to the cool white light string of the base through the fourth output resistor. The collectors of both the first and second transistors are grounded.

Images