Intelligent LED driving power supply and lamp

Abstract

The utility model discloses an intelligent LED driving power supply and a lamp, the intelligent LED driving power supply comprises a flyback power supply controller, a filter circuit module, a rectification circuit module, a power factor correction circuit module, a control module, an output circuit module and a PWM dimming module, the filter circuit module is connected with an external power supply; the output end of the filter circuit module is connected with the input end of the rectification circuit module, the output end of the rectification circuit module is connected with the input end of the power factor correction circuit module, the output end of the power factor correction circuit module is connected with the control module and the output circuit, and the control module is connected with the output circuit module. The PWM dimming module is connected with the output circuit module, and the flyback power supply controller is connected with the control module and the power factor correction circuit module. According to the utility model, modular design is adopted, miniaturization arrangement is facilitated, dimming output is facilitated, and the stability of the circuit is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power supply technical field, specifically a kind of miniaturized intelligent LED drive power and lamp. BACKGROUND

[0002] Compared with traditional lighting mode, LED (light emitting diode) lighting has the outstanding advantages of high efficiency, energy saving, pollution-free and long service life, and is regarded as the "fourth generation of lighting light source". In recent years, it has become a research hotspot in the field of lighting, and has been widely used in lighting fields such as street lighting, tunnel lighting and landscape lighting.

[0003] With the rapid development of LED lighting technology and the rise of smart home concept, LED lighting lamps are becoming smaller and smaller. To meet the use of various places, there are LED lighting lamps of different sizes. In smart home, people sometimes pursue the thinnest and smallest LED lighting lamps. In order to make the whole product more thin and small, the size of various electronic components inside the LED lighting lamp is particularly important. Among them, the driving power, which plays a leading role, is often a large component. Traditional LED driving power is often large in size, which cannot meet the installation space requirements of small and ultra-small lamps, and also has certain limitations in light adjustment precision and compatibility. SUMMARY

[0004] In order to solve the above technical problems, the present application provides an intelligent LED driving power supply and lamp.

[0005] In order to solve the above technical problems, the present application adopts the following technical scheme:

[0006] An intelligent LED driving power supply comprises a flyback power supply controller, a filter circuit module, a rectifier circuit module, a power factor correction circuit module, a control module, an output circuit module and a PWM dimming module. The filter circuit module is connected with an external power supply. The output end of the filter circuit module is connected with the input end of the rectifier circuit module. The output end of the rectifier circuit module is connected with the input end of the power factor correction circuit module. The output end of the power factor correction circuit module is connected with the control module and the output circuit. The control module is connected with the output circuit module. The PWM dimming module is connected with the output circuit module. The flyback power supply controller is connected with the control module and the power factor correction circuit module.

[0007] As a further improvement, the model of the flyback power supply controller is selected as LP8842, LP3773A or LP8728BD.

[0008] As a further improvement, the power factor correction circuit comprises a PFC controller, a transistor Q1, a MOS tube Q2 and a MOS tube Q3, the base of the transistor Q1 is connected with the PFC controller, the emitter of the transistor Q1 is connected with the gate of the MOS tube Q2 and the gate of the MOS tube Q3 respectively, the collector of the transistor Q1, the source of the MOS tube Q2 and the source of the MOS tube Q3 are connected and grounded, the drain of the MOS tube Q2 and the drain of the MOS tube Q3 are connected and connected with the anode of a diode D1, the cathode of the diode D1 is connected with the PFC controller through a fuse FB1.

[0009] As a further improvement, the anode and the cathode of the diode D1 are connected with a diode D2, a resistor R1 and a capacitor C1 in parallel, the resistor R1 and the capacitor C1 are connected in series, the resistor R1 is connected with the cathode of the diode D1, and the capacitor C1 is connected with the anode of the diode D1.

[0010] As a further improvement, the base of the transistor Q1 is connected with the PFC controller through a resistor R2, the emitter of the transistor Q1 is connected with a resistor R3 and a resistor R4, the resistor R3 is connected with the gate of the MOS tube Q2, the resistor R4 is connected with the gate of the MOS tube Q3, a diode D3 is connected in series between the resistor R2 and the resistor R3, the drain of the MOS tube Q2 and the drain of the MOS tube Q3 are connected and connected with a rectifier circuit through a transformer T1, a capacitor group is connected between the diode D1 and the collector of the transistor Q1.

[0011] As a further improvement, a resistor R5 is connected between the collector of the transistor Q1 and the resistor R3, a resistor R6 is connected between the source and the drain of the MOS tube Q2, and a capacitor C2 is connected between the source and the drain of the MOS tube Q3.

[0012] As a further improvement, a capacitor C35 and a capacitor C36 connected in parallel are arranged between the transformer T1 and the rectifier circuit module.

[0013] As a further improvement, the control module comprises a MOS tube Q4, the gate of the MOS tube Q4 is connected with a flyback power controller, the source of the MOS tube Q4 is connected with the gate of the MOS tube Q2 through a resistor R2, a diode D3 and a resistor R3, the drain of the MOS tube Q4 is connected with the primary of a transformer T4, the source of the MOS tube Q4 is connected with the primary of a transformer T5, the primary of the transformer T4 is connected with a fuse FB1, and the secondary of the transformer T4 and the secondary of the transformer T5 are connected with an output circuit module.

[0014] As a further improvement, the output circuit module comprises a direct current conversion chip, a diode D6, a resistor R25, a resistor R26, a capacitor C12, a capacitor C13, a capacitor C14, a diode D7, a capacitor C15, a capacitor C16 and a resistor R27, the positive pole of the diode D6 is connected with the secondary of the transformer T4, the capacitor C14 is connected with the resistor R25 in series, the capacitor C14 is connected with the positive pole of the diode D6, the resistor R25 is connected with the negative pole of the diode D6, the resistor R26, the capacitor C12 and the capacitor C13 are connected in parallel and then connected with the negative pole of the diode D6, the secondary of the transformer T4 and the direct current conversion chip, the capacitor C15, the capacitor C16 and the resistor R27 are connected in parallel and then connected with the negative pole of the diode D7 and the secondary of the transformer T5, the positive pole of the diode D7 is connected with the secondary of the transformer T5, and the PWM light modulation module is connected with the negative pole of the diode D7, the secondary of the transformer T5 and the direct current conversion chip.

[0015] A lamp, comprising the intelligent LED driving power supply described above.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] Adopting modular processing, adopting PWM light modulation module, built-in high-precision digital light modulation chip, supporting household light modulation protocol, high-precision light modulation, output power has extensive applicability, can adapt to various types of LED lamps, including but not limited to linear lamps, down lamps, spotlights and the like. Meanwhile, its output interface design is flexible, facilitating connection with different types of lamps; introducing a power factor correction module improves the adaptability of the power supply to the power grid, reduces harmonic pollution and further improves overall energy efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a circuit frame schematic view of the utility model;

[0019] Figure 2 It is a circuit principle schematic view of the utility model;

[0020] Figure 3 It is a circuit connection schematic view of the power factor correction circuit module in the utility model;

[0021] Figure 4 It is a circuit connection schematic view of the output circuit module in the utility model. DETAILED DESCRIPTION

[0022] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0023] In the description of the present application, it needs to be understood that if there are terms related to the orientation or positional relationship of "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like, the orientation or positional relationship shown in the drawings is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0024] In the description of the present application, it needs to be understood that unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be mechanically connected or electrically connected. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiment one

[0026] As Figure 1 And 2 As shown in Fig. 3, an intelligent LED driving power supply includes a flyback power supply controller, a filter circuit module, a rectifier circuit module, a power factor correction circuit module, a control module, an output circuit module and a PWM dimming module. The filter circuit module is connected with an external power supply. The output end of the filter circuit module is connected with the input end of the rectifier circuit module. The output end of the rectifier circuit module is connected with the input end of the power factor correction circuit module. The output end of the power factor correction circuit module is connected with the control module and the output circuit. The control module is connected with the output circuit module. The PWM dimming module is connected with the output circuit module. The flyback power supply controller is connected with the control module and the power factor correction circuit module. The model of the flyback power supply controller is selected as LP8842, LP3773A or LP8728BD. The stability of the circuit is improved through the flyback power supply controller.

[0027] The PWM dimming module is a digital dimming chip that supports household dimming protocols, provides high-precision dimming, and improves the dimming precision and intelligent level of the lighting system. It effectively controls the output circuit module and adjusts the brightness of the light. With the PWM dimming module, it can adapt to various types of LED lamps, including but not limited to linear lamps, downlights, spotlights, etc. At the same time, its output interface design is flexible, making it easy to connect with different types of lamps. The power factor correction circuit module is a Boost pfc circuit, commonly known as PFC circuit. Through the power factor correction circuit module, the adaptability of the power supply to the power grid is improved, and harmonic pollution is reduced, further improving overall energy efficiency.

[0028] The power factor correction circuit module includes a PFC controller, a transistor Q1, a MOS tube Q2, and a MOS tube Q3. The base of the transistor Q1 is connected to the PFC controller. The emitter of the transistor Q1 is connected to the gate of the MOS tube Q2 and the gate of the MOS tube Q3, respectively. The collector of the transistor Q1, the source of the MOS tube Q2, and the source of the MOS tube Q3 are connected to the ground. The drain of the MOS tube Q2 and the drain of the MOS tube Q3 are connected to the diode D1. The diode D1 is connected to the PFC controller through the fuse switch FB1.

[0029] More specifically, the positive and negative terminals of the diode D1 are connected in parallel with a diode D2, a resistor R1, and a capacitor C1. The resistor R1 and the capacitor C1 are connected in series. The resistor R1 is connected to the negative terminal of the diode D1, and the capacitor C1 is connected to the positive terminal of the diode D1. The base of the transistor Q1 is connected to the PFC controller through a resistor R2. The emitter of the transistor Q1 is connected to a resistor R3 and a resistor R4, which are connected in parallel. The resistor R3 is connected to the gate of the MOS tube Q2, and the resistor R4 is connected to the gate of the MOS tube Q3. A diode D3 is connected in series between the resistor R2 and the resistor R3. The drain of the MOS tube Q2 and the drain of the MOS tube Q3 are connected to the rectifier circuit through a transformer T1. A capacitor group is connected between the diode D1 and the collector of the transistor Q1. The capacitor group can be composed of multiple parallel-connected capacitors. The collector of the transistor Q1 is connected to a resistor R5 between the resistor R3. The source and drain of the MOS tube Q2 are connected by a resistor R6, and the source and drain of the MOS tube Q3 are connected by a capacitor C2. In addition, the collector of the transistor Q1 can be connected to a resistor R20 and a resistor R21 before grounding. The resistor R20 and the resistor R21 are connected in parallel.

[0030] For the rectifier circuit, a known structure is adopted, which is composed of four diode circulation connections, the filter circuit can include capacitor C3, resistor R7, resistor R8, resistor R9 and voltage-dependent resistor R10, resistor R7, resistor R8, resistor R9 are connected in series and then connected in parallel with capacitor C3, and then connected in parallel with voltage-dependent resistor R10, the filter circuit is connected with the rectifier circuit through transformer T2, and the filter circuit is connected with the external input alternating current through transformer T3. Through the filtering circuit and the filtering processing, and then through the rectification processing of the rectifier circuit, the output current is stabilized, and then enters the PFC circuit. Capacitors C35 and C36 connected in parallel are arranged between the transformer T1 and the rectifier circuit module, for further filtering.

[0031] The purpose of improving the PF value output is achieved by the mutual cooperation of the triode Q1, the MOS tube Q2 and the MOS tube Q3, that is, the power factor is improved. When outputting, the capacitor group is used for filtering and anti-interference processing again, the adaptability of the power supply to the power grid is improved, the harmonic pollution is reduced, and the overall energy efficiency is further improved.

[0032] The capacitor C31 is connected between the collector of the diode D1 and the triode Q1, and further plays a filtering role.

[0033] In addition, the primary side of the transformer T1 is also connected with the diode D4, the capacitor C36 is connected with the positive electrode of the diode D4, the negative electrode of the diode D4 is connected with the positive electrode of the diode D5, the negative electrode of the diode D5 is connected with the capacitor C32, the capacitor C32 is grounded, and is connected with the rectifier circuit module and the control module respectively.

[0034] Example two

[0035] Reference Figures 1-4As shown, an intelligent LED driving power supply includes a flyback power supply controller, a filter circuit module, a rectifier circuit module, a power factor correction circuit module, a control module, an output circuit module and a PWM dimming module, wherein the filter circuit module is connected with an external power supply, the output end of the filter circuit module is connected with the input end of the rectifier circuit module, the output end of the rectifier circuit module is connected with the input end of the power factor correction circuit module, the output end of the power factor correction circuit module is connected with the control module and the output circuit, the control module is connected with the output circuit module, the PWM dimming module is connected with the output circuit module, and the flyback power supply controller is connected with the control module and the power factor correction circuit module. The control module includes a MOS tube Q4, the gate of the MOS tube Q4 is connected with the flyback power supply controller, the source of the MOS tube Q4 is connected with the gate of a MOS tube Q2 through a resistor R2, a diode D3 and a resistor R3, the drain of the MOS tube Q4 is connected with the primary of a transformer T4, the source of the MOS tube Q4 is connected with the primary of a transformer T5, the primary of the transformer T4 is connected with a fuse switch FB1, and the secondary of the transformer T4 and the secondary of the transformer T5 are connected with the output circuit module.

[0036] With the MOS tube Q4, on-off control can be realized. With the transformers T4 and T5, voltage transformation is realized.

[0037] For the rectifier module, it is a common module and can be formed by four diodes connected in series.

[0038] Embodiment three

[0039] Reference Figures 1-4As shown, an intelligent LED driving power supply includes a flyback power supply controller, a filter circuit module, a rectifier circuit module, a power factor correction circuit module, a control module, an output circuit module, and a PWM dimming module. The filter circuit module is connected with an external power supply. The output end of the filter circuit module is connected with the input end of the rectifier circuit module. The output end of the rectifier circuit module is connected with the input end of the power factor correction circuit module. The output end of the power factor correction circuit module is connected with the control module and the output circuit. The control module is connected with the output circuit module. The PWM dimming module is connected with the output circuit module. The flyback power supply controller is connected with the control module and the power factor correction circuit module. The output circuit module includes a direct current conversion chip, a diode D6, a resistor R25, a resistor R26, a capacitor C12, a capacitor C13, a capacitor C14, a diode D7, a capacitor C15, a capacitor C16, and a resistor R27. The anode of the diode D6 is connected with the secondary side of a transformer T4. The capacitor C14 is connected with the resistor R25 in series. The capacitor C14 is connected with the anode of the diode D6. The resistor R25 is connected with the cathode of the diode D6. The resistor R26, the capacitor C12, and the capacitor C13 are connected in parallel and then connected with the cathode of the diode D6, the secondary side of the transformer T4, and the direct current conversion chip. The capacitor C15, the capacitor C16, and the resistor R27 are connected in parallel and then connected with the cathode of the diode D7 and the secondary side of a transformer T5. The anode of the diode D7 is connected with the secondary side of the transformer T5. The PWM dimming module is connected with the direct current conversion chip, the secondary side of the transformer T5, and the cathode of the diode D7. The direct current conversion chip is a DC-DC conversion chip. The PWM dimming module can adopt a model FP7130, or FP7102, or other models to realize dimming processing and intelligently output appropriate brightness.

[0040] The external alternating current first enters the filter circuit module, and then enters the rectifier circuit module for rectification processing, and then enters the power factor correction circuit module, the control module, the output circuit module, and the PWM dimming module. The voltage is improved after passing through the PFC circuit, the harmonic pollution is reduced, and the output voltage of the output circuit module and the control module is controlled accordingly. In the output, the PWM dimming module is used for dimming processing. The built-in control application of each controller is used for intelligent control to ensure the output.

[0041] For the lamp, each module is sealed in a small size, and the whole has a small volume.

[0042] It should be noted that the above only describes the preferred embodiments of the present application and is not used to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features, but any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent LED driver power supply, characterized by, The anti-rush power supply controller, the filter circuit module, the rectifier circuit module, the power factor correction circuit module, the control module, the output circuit module and the PWM dimming module are connected.

2. The intelligent LED power supply of claim 1, wherein, The anti-rush power supply controller is selected from LP8842, LP3773A or LP8728BD.

3. The intelligent LED power supply of claim 1, wherein, The power factor correction circuit comprises a PFC controller, a transistor Q1, a MOS tube Q2 and a MOS tube Q3.

4. The intelligent LED power supply of claim 3, wherein, The positive and negative electrodes of the diode D1 are connected in parallel with a diode D2, a resistor R1 and a capacitor C1.

5. The intelligent LED power supply of claim 4, wherein, The base of the transistor Q1 is connected with the PFC controller through a resistor R2.

6. The intelligent LED power supply of claim 5, wherein, The emitter of the transistor Q1 is connected with a resistor R3 and a resistor R4.

7. The intelligent LED power supply of claim 6, wherein, The resistor R3 is connected with the gate of the MOS tube Q2, and the resistor R4 is connected with the gate of the MOS tube Q3.

8. The intelligent LED power supply of claim 7, wherein, The drain of the MOS tube Q2 and the drain of the MOS tube Q3 are connected and then connected with the rectifier circuit through a transformer T1. The capacitor C2 is connected between the source of the MOS tube Q2 and the gate of the MOS tube Q3. The capacitor C35 and the capacitor C36 are connected in parallel between the transformer T1 and the rectifier circuit module. The control module comprises a MOS tube Q4. The gate of the MOS tube Q4 is connected with the anti-rush power supply controller. The source of the MOS tube Q4 is connected with the gate of the MOS tube Q2 through the resistor R2, the diode D3 and the resistor R3. The drain of the MOS tube Q4 is connected with the primary of a transformer T4. The source of the MOS tube Q4 is connected with the primary of a transformer T5. The primary of the transformer T4 is connected with a fuse FB1. The secondary of the transformer T4 and the secondary of the transformer T5 are connected with the output circuit module.

9. The intelligent LED power supply of claim 8, wherein, The output circuit module comprises a direct current conversion chip, a diode D6, a resistor R25, a resistor R26, a capacitor C12, a capacitor C13, a capacitor C14, a diode D7, a capacitor C15, a capacitor C16 and a resistor R27, the positive pole of the diode D6 is connected with the secondary of the transformer T4, the capacitor C14 is connected with the resistor R25 in series, the capacitor C14 is connected with the positive pole of the diode D6, the resistor R25 is connected with the negative pole of the diode D6, the resistor R26, the capacitor C12 and the capacitor C13 are connected in parallel and then connected with the direct current conversion chip, the negative pole of the diode D6 and the secondary of the transformer T4, the capacitor C15, the capacitor C16 and the resistor R27 are connected in parallel and then connected with the negative pole of the diode D7 and the secondary of the transformer T5, the positive pole of the diode D7 is connected with the secondary of the transformer T5, and the PWM light modulation module is connected with the direct current conversion chip, the secondary of the transformer T5 and the negative pole of the diode D7.

10. A luminaire characterized by, An intelligent LED driving power supply comprising the intelligent LED driving power supply of any one of claims 1-9. An intelligent LED driving power supply comprising the intelligent LED driving power supply of any one of claims 1-9.

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