Integrated lamp driving circuit, driver and vehicle

Abstract

The utility model provides an integrated lamp driving circuit, a driver and a vehicle, the integrated lamp driving circuit comprises an LED driving control circuit and a first step-down converter, and the LED driving control circuit is used for converting an input whole vehicle power supply into a constant current power supply signal according to a received control signal so as to drive each LED lamp panel; the first step-down converter is used for converting an input vehicle power supply into a constant-voltage power supply signal according to the received control signal so as to drive the pixelated projection lamp panel; no micro-control unit is arranged in the integrated lamp driving circuit, so that software-free design can be realized, the processing difficulty of cooperative work of multiple micro-control units is reduced, the development time is saved, and the development cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to an integrated lamp driving circuit and driver, and a vehicle. Background Technology

[0002] With the development of automotive lighting technology, the light source has gradually shifted from traditional halogen bulbs to light-emitting diodes (LEDs). LEDs have enabled the emergence of increasingly personalized headlight designs. These lights are not only aesthetically pleasing but also possess dynamic effects. Pixelated front projection lights are also beginning to appear on high-end models. Examples include micro-LEDs and digital light processing (DLP) systems. These light sources require drivers to control them and provide the converted and matched power supply.

[0003] The current driving scheme for combined headlights uses different drivers for the pixel lamp board and the conventional LED lamp board. The LED driver module (LDM) is responsible for driving the conventional LED lamp board, and the pixel lamp driver (MLD) is responsible for driving the pixel lamp board. In addition to the necessary converters, such as buck converters, buck-boost converters, and high-speed switching switches (HSS), each driver has its own microcontroller unit (MCU) and a minimum system adapted to the MCU. This driver architecture is complex to develop, time-consuming, has high development and component costs, complex timing logic, and is not easy to decouple. Utility Model Content

[0004] In view of this, the present utility model embodiment is committed to providing an integrated lamp driving circuit and driver, and a vehicle, which drives the front lamps of the vehicle according to the received control signal. It has no internal microcontroller unit, which can realize software-free design, reduce the processing difficulty of multiple microcontroller units working together, save development time and reduce development costs.

[0005] To achieve the above technical objectives, the embodiments of this specification provide the following technical solutions:

[0006] In a first aspect, embodiments of this application provide an integrated lighting drive circuit, comprising: an LED drive control circuit connected to each LED light panel located at the front of a vehicle, for converting input vehicle power into a constant current power signal to drive each of the LED light panels according to a received control signal; and a first buck converter connected to a pixelated projection light panel located at the front of the vehicle, for converting input vehicle power into a constant voltage power signal to drive the pixelated projection light panel according to the received control signal.

[0007] Optionally, the control signal includes a drive control signal and an enable control signal. The drive control signal adopts the UART on CAN protocol, and the first enable control signal is used to enable the LED drive control circuit and the first buck converter.

[0008] Optionally, the integrated lighting driver circuit further includes a transceiver to the first buck converter and the LED driver control circuit; the transceiver is used to receive the drive control signal at the level required for CAN physical layer transmission and transmit the drive control signal to the first buck converter and the LED driver control circuit at the TTL level of UART.

[0009] Optionally, the integrated lighting driver circuit further includes a low-dropout regulator connected to the transceiver, the LED driver control circuit, and the first buck converter. The low-dropout regulator is used to convert the vehicle power signal into a stable power signal according to the received enable control signal, so as to provide stable power to the transceiver, the LED driver control circuit, and the first buck converter.

[0010] Optionally, the integrated lighting drive circuit further includes at least one stepper controller connected to the transceiver and the low-dropout regulator for driving a stepper motor.

[0011] Optionally, the LED drive control circuit includes: at least one boost converter connected to the vehicle power supply and a plurality of second buck converters connected to the boost converter and the transceiver, wherein the second buck converters are used to output constant current power to drive each of the LED panels.

[0012] Optionally, the number of boost converters is determined based on the number of channels in the LED panel.

[0013] Optionally, the second buck converter includes multiple programmable interfaces, which are connected to a load switch to output digital control signals that provide switching functionality, or the programmable interfaces are connected to a temperature sensor, the pins of the LED board, or an encoded resistor to acquire voltage.

[0014] Optionally, the LED drive control circuit further includes: a high-side switch connected to the second buck converter and the vehicle power supply, the second buck converter being used to output a switch control signal, and the high-side switch being used to provide a switching function to the load connected thereto according to the switch control signal, wherein the switch control signal is a PWM signal or a second enable control signal.

[0015] Secondly, another objective of this application is to provide an integrated lamp driver, which includes: a heat sink, a mounting printed circuit board, a shield, a plastic cover, and a sealing ring stacked sequentially from bottom to top, and fixed with screws; the mounting printed circuit board is provided with the integrated lamp driving circuit as described above.

[0016] Another object of this application is to provide a vehicle in which an integrated lighting drive circuit as described above is provided.

[0017] As can be seen from the above technical solution, the integrated lighting drive circuit provided in this specification includes an LED drive control circuit and a first buck converter. The LED drive control circuit is used to convert the input vehicle power supply into a constant current power signal to drive each LED panel according to the received control signal. The first buck converter is used to convert the input vehicle power supply into a constant voltage power signal to drive the pixelated projection light panel according to the received control signal. During this process, no software program processing is required, and the integrated lighting drive circuit can also be without a microcontroller unit, which can realize software-free design, reduce the processing difficulty of multiple microcontroller units working together, thereby saving development time and reducing development costs.

[0018] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1 The diagram shown is a structural schematic of an integrated lighting driver provided in an embodiment of this application.

[0021] Figure 2 The diagram shown is a connection schematic of an integrated lamp driver circuit provided in one embodiment of this application.

[0022] Figure 3 The diagram shown is a structural schematic of an integrated lighting driver circuit provided in one embodiment of this application.

[0023] Figure 4 The diagram shown is a structural schematic of a vehicle provided in one embodiment of this application. Detailed Implementation

[0024] Unless otherwise defined, the technical or scientific terms used in the embodiments of this specification shall have the ordinary meaning understood by one of ordinary skill in the art to which this specification pertains. The terms "first," "second," and similar terms used in the embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to avoid confusion of constituent elements.

[0025] Unless the context otherwise requires, throughout this specification, "a plurality of" means "at least two," and "including" is interpreted as open-ended or encompassing, that is, "including, but not limited to." In the description of this specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this specification. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example.

[0026] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] This application provides an integrated luminaire driver, such as Figure 1 As shown, the integrated lamp driver includes, from bottom to top, a heat sink, a printed circuit board assembly (PCBA), a shield, a plastic cover, and a sealing ring, all stacked together and secured with screws. The integrated lamp driver circuitry is mounted on the PCBA. The integrated lamp driver is located at the front of the vehicle to drive and control the combined front lighting fixtures.

[0029] The heat sink is made of aluminum to facilitate heat dissipation for the power-generating components on the PCBA. Components are mounted on the PCBA to form an integrated lighting driver circuit. The shielding cover is made of metal to shield interference signals and improve electromagnetic compatibility (EMC) performance. The plastic cover serves as the mounting structure for the integrated lighting driver, and the sealing ring completes the sealing of the integrated lighting driver.

[0030] A cavity is provided on the heat sink, and the printed circuit board is fixedly installed in the cavity. The shielding cover and plastic cover are stacked on the side of the printed circuit board away from the heat sink. The sealing ring is fitted around the shielding cover, plastic cover, and the heat sink. Screws serve as fasteners for the heat sink, PCBA, shielding cover, and plastic cover; that is, the four corners of the heat sink, PCBA, shielding cover, and plastic cover are fixed together by screws.

[0031] The connection of the integrated lighting driver circuit provided in this application is as follows: Figure 2 As shown, the output of the integrated lighting driver circuit 20 is connected to the vehicle front lighting fixture 10 located at the front of the vehicle. The vehicle front lighting fixture 10 includes various light-emitting diode (LED) panels, such as low beam LED panels, high beam LED panels, daytime running light / position light LED panels, turn signal LED panels, and pixelated projection panels. The pixelated projection panel can be a micro light-emitting diode (MicroLed) panel (e.g., Figure 2 Alternatively, it could be a digital light processing system (DLP), etc., without limitation. The vehicle front light fixture 10 may also include loads such as a stepper motor and a fan. The input terminal of the integrated light fixture driver circuit 20 is connected to the vehicle power supply and also to the hierarchical domain controller 30, receiving drive control signals and enable control signals Com_EN from the hierarchical domain controller 30. It should be noted that the connection between the two components can be indirect, with other components placed in between.

[0032] The vehicle power supply provides power to the integrated lighting driver circuit 20. The hierarchical domain controller 30 includes a microcontroller unit (MCU), primarily used to control the lights and related loads in different areas of the vehicle. In this embodiment, the hierarchical domain controller 30 also generates corresponding control signals based on vehicle driving requirements to control the lights and related components located at the front of the vehicle. It should be noted that the control signals can be generated by the aforementioned MCU, or a separate MCU can be added within the hierarchical domain controller 30 to generate corresponding control signals based on vehicle driving requirements.

[0033] The integrated lighting driver circuit 20 receives control signals transmitted from the hierarchical domain controller 30 and performs voltage conversion on the input vehicle power signal according to the control signals, outputting a constant current power signal or a constant voltage power signal to drive each LED panel or pixelated projection panel. The integrated lighting driver circuit 20 can also drive stepper motors, fans, or other loads according to the control signals. Thus, the integrated lighting driver circuit 20 can directly control all functions of the vehicle's front lights based on the received control signals, eliminating the need for a dedicated MCU to generate control signals. This simplifies the system architecture, reduces the processing difficulty of multiple microcontroller units working together, saves development time, and lowers development costs.

[0034] The structure of the integrated lighting driver circuit provided in this application is as follows: Figure 3 As shown, the integrated lighting driver circuit 20 mainly includes: an LED driver control circuit 22 and a first step-down converter 23.

[0035] The LED driver control circuit 22 is connected to each LED light panel located at the front of the vehicle, and is used to convert the input vehicle power supply into a constant current power signal to drive each LED light panel according to the received control signal. The first buck converter 23 is connected to the pixelated projection light panel located at the front of the vehicle, and is used to convert the input vehicle power supply into a constant voltage power signal to drive the pixelated projection light panel according to the received control signal.

[0036] The first buck converter 23 can output two channels of constant voltage power supply signals (CV), for example... Figure 3 CVchannel 1 and CVchannel 2 provide constant voltage power to the pixel lights and signal lights. The power supply voltage of the constant voltage power signal is preferably 4~8V, and the single-channel output capacity is above 40W. The LED driver control circuit 22 and the first step-down converter 23 realize the drive control of all functions of the front lights without using an MCU, which reduces the processing difficulty of multi-MCU collaborative work, saves development time, and reduces development costs.

[0037] The vehicle power supply is the vehicle battery, which provides power to the integrated lighting driver circuit 20. The power input terminal of the integrated lighting driver circuit 20 can be equipped with surge protection, reverse polarity protection, and filtering circuits. The Hierarchical Domain Controller (HDC) 30 outputs control signals to the integrated lighting driver circuit 20. The HDC 30 contains a processing program for display control of the vehicle's front lights, housed in its microcontroller unit (MCU). Based on this program, the HDC 30 outputs control signals, and the integrated lighting driver circuit 20 directly controls the vehicle's front lights without requiring complex signal processing itself. The HDC 30 can drive individual LED panels and pixelated projection panels.

[0038] It should be noted that the hierarchical domain controller 30 can also be other lighting domain control systems. The hierarchical domain controller 30 uses UART on CAN communication for control. For integrated circuits (ICs) that only need to be turned off during sleep and do not require communication configuration, the enable signal Com_EN is used for enabling, which can reduce static power consumption and achieve energy saving.

[0039] The integrated lighting driver circuit of this application has no microcontroller unit, enabling software-free design. The LED driver control circuit 22 and the first step-down converter 23 drive each LED board and the pixelated projection board respectively according to the received control signals. This enables the driving control of all functions of the vehicle's front lights. The system architecture is simple, reducing the processing difficulty of multiple microcontroller units working together, saving development time and reducing development costs.

[0040] See also Figure 3 The control signals include a drive control signal and an enable control signal Com_EN. The drive control signal adopts the UART on CAN protocol. That is, the drive control signal is transmitted at the CAN physical layer, which can improve the EMC performance of data transmission. The enable control signal Com_EN is used to enable the LED drive control circuit 22 and the first buck converter 23. When the enable control signal Com_EN is valid, the LED drive control circuit 22 outputs a constant current power supply signal to drive each LED board according to the drive control signal. The first buck converter 23 outputs a constant voltage power supply signal to drive the pixelated projection lamp board according to the drive control signal.

[0041] In some embodiments of this application, the integrated lighting driver circuit further includes a transceiver 21 connected to the LED driver control circuit 22 and the first buck converter 23. The transceiver 21 receives the drive control signal at the level required for CAN physical layer transmission and transmits the drive control signal to the LED driver control circuit 22 and the first buck converter 23 at a Universal Asynchronous Receiver / Transmitter (UART) dual-transistor logic (TTL) level. The transceiver 21 is a CAN physical layer device, enabling the Universal Asynchronous Receiver / Transmitter (UART) of the integrated circuit (IC) to operate on the physical layer of the Controller Area Network (CAN) bus, thereby improving the EMC performance of data transmission. The drive control signals are UART_CANH and UART_CANL. The transceiver 21 outputs the differential signal to the LED drive control circuit 22 and the first buck converter 23 based on the differential signal of the UART_CANH and UART_CANL signals to control the LED drive control circuit 22 and the first buck converter 23 to drive each LED board and the pixelated projection board.

[0042] In some embodiments of this application, the integrated lighting driver circuit 20 further includes a low dropout regulator (LDO) 24 connected to the transceiver 21, the LED driver control circuit 22, and the first buck converter 23. The LDO 24 is used to convert the vehicle power signal into a stable power signal according to the received enable control signal, and to provide stable power to the transceiver 21, the LED driver control circuit 22, and the first buck converter 23.

[0043] When the enable control signal is active, the low-dropout regulator 24 converts the vehicle power signal into a stable power signal. The low-dropout regulator 24 can output a stable 5V or 3.3V power signal. Thus, the low-dropout regulator 24 provides a stable 5V or 3.3V power supply to both the internal and external circuits of the integrated lamp driver, facilitating the driving of the vehicle's front lights by the various components within the integrated lamp driver circuit.

[0044] In some embodiments of this application, the integrated lighting driver circuit 20 further includes at least one stepper controller 25 connected to the transceiver 21 and the low-dropout regulator 24, for driving a stepper motor. The stepper controller 25 can output one or two channels of stepper motor drive signals to drive the stepper motor. For example... Figure 3 The motor drive signals output by the stepper controller include Stepper_A, Stepper_B, Stepper_C, and Stepper_D. In this embodiment, the stepper controller 25 provides drive control for the stepper motors used for leveling and steering adjustments. The number of stepper controllers 25 can be increased according to the number of stepper motors that need to be driven.

[0045] In some embodiments of this application, the LED driver control circuit 22 includes: at least one boost converter 221 connected to the vehicle power supply and multiple second buck converters 222 connected to the boost converter 221 and the transceiver 21. The second buck converters 222 are used to output constant current power to drive each of the LED panels. The boost converter 221 boosts the battery voltage to above 60V so that the second buck converters 222 connected at the rear end have sufficient driving capability to drive the subsequent LED panels. The second buck converters 222 are used to step down the constant voltage signal output by the boost converter 221, and can output multiple constant current power signals to provide constant current power to each functional LED panel, for example... Figure 3 The system includes three constant current power signals: CC channel 1, CC channel 2, and CC channel 3. The second buck converter 222 supports series connection of LEDs on the LED board and supports mounting a matrix management chip on the LED board, enabling individual LED switching and brightness control, and achieving dynamic effects such as matrix headlights (Adaptive Driving Beam, ADB), sequential turn signals, and welcome animations. One boost converter 221 can power up to three second buck converters 222. The number of second buck converters 222 can be adjusted according to the number of constant current power channels required to drive each LED board. For example, one boost converter 221 can connect to one, two, or three second buck converters 222, depending on the specific needs.

[0046] Optionally, the number of boost converters 221 is determined according to the number of channels of the LED light panel. One boost converter 221 can power up to three second buck converters 222. One boost converter 221 and the corresponding connected second buck converter 222 are grouped together. The number of groups of boost converters 221 and second buck converters 222 can be increased according to the number of constant current power (CC) channels required to drive each LED light panel. For example, if one second buck converter 222 outputs three constant current power (CC), and this embodiment requires 12 channels of output constant current power (CC) to provide constant current drive for each functional LED of the vehicle headlights, then two groups of boost converters 221 and corresponding connected second buck converters 222 can be set up, with one boost converter 221 connected to three second buck converters 222 and the other boost converter 221 connected to one second buck converter 222; of course, both boost converters 221 can also be connected to two second buck converters 222. By appropriately adjusting the number of boost converter 221 and the corresponding second buck converter 222, costs can be minimized while meeting the driving requirements of each LED board, thus avoiding resource waste to the greatest extent.

[0047] In some embodiments of this application, a memory may be provided in the second buck converter 222, which can provide one-time programmable (OTP) programming. The second buck converter 222 includes multiple programmable interfaces, such as... Figure 3 The MPIO1-MPIOn interfaces are shown in the diagram. The programmable interface can be configured as either analog or digital. When connected to a load switch to output a digital control signal providing switching functionality, the programmable interface is configured as digital. Alternatively, it can be connected to a temperature sensor, LED board pins, or coded resistors to acquire voltage data, in which case it is configured as analog. The temperature sensor can be a negative temperature coefficient (NTC) sensor. The programmable interface can be configured for analog-to-digital conversion (AD), pulse width modulation (PWM), etc., to acquire temperature sensor data and LED pin (BIN) information from each LED board, supporting thermal management and BIN management functions for each LED board on the system.

[0048] In some embodiments of this application, see also [link to previous document]. Figure 3The LED driver control circuit 22 further includes a high-side switch (HSS) 223 connected to the second buck converter 222. The second buck converter 222 is also used to output a switch control signal, and the high-side switch 223 is used to provide a switching function for the load connected to it according to the switch control signal. The switch control signal is a PWM signal or a second enable control signal EN. Specifically, the second buck converter 222 can output a PWM signal through a programmable interface configured as a digital quantity. The high-side switch 223 turns on or off according to the received PWM signal, thereby connecting a disconnectable fan or other load. The second buck converter 222 can also output a second enable control signal EN through a programmable interface configured as a digital quantity. The high-side switch 223 turns on or off according to the received second enable control signal EN, thereby connecting a disconnectable fan or other load. In this way, the high-side switch 223 can provide low-latency, long-life, and highly stable drive control for fans and other loads.

[0049] In some embodiments of this application, the second buck converter 222 can be connected to multiple independent high-side switches 223, each high-side switch being connected to a fan or other load. The second buck converter 222 can also be connected to an integrated high-side switch 223, which integrates multiple semiconductor high-side switches, each semiconductor high-side switch being connected to a fan or other load.

[0050] In some embodiments of this application, the integrated lamp driver circuit 20 may also include a high-performance microcontroller unit (MCU). The MCU generates corresponding control signals as needed. After generating the control signals, the MCU transmits the generated control signals to the LED driver control circuit 22 and the first buck converter 23 to control the lights and related components located at the front of the vehicle. This can achieve the same high degree of integration in the driving function, reduce the processing difficulty of multiple microcontroller units working together, save development time, and reduce development costs.

[0051] The integrated lighting driver circuit of this application has a high degree of integration and meets the power supply requirements of various LEDs (including pixel lights) in the front lighting fixture. At the same time, it provides drive control for the cooling fan and the dimming motor. Moreover, it adopts the MCU_Less architecture design, which can realize all the driving functions of the front lighting fixture through UART communication + Com_EN and targeted logic combinations without using an MCU. Thus, the integrated lighting driver circuit realizes software-free design, reduces the processing difficulty of multiple MCUs working together, saves development time, and reduces development costs.

[0052] In summary, the integrated lighting drive circuit of this application includes an LED drive control circuit and a first step-down converter, which is powered by the vehicle power supply and drives the front lights of the vehicle according to the received control signal. The integrated lighting drive circuit can be without a microcontroller unit, which can realize software-free design, reduce the processing difficulty of multiple microcontroller units working together, save development time, and reduce development costs.

[0053] In one exemplary embodiment of this specification, a vehicle is also provided. For example, such as... Figure 4 As shown, the vehicle 400 includes an integrated lighting driver 4001.

[0054] The vehicle according to the present invention uses the aforementioned integrated lamp driver, which can achieve internal software-free design, reduce the processing difficulty of multi-MCU collaborative work, save development time, and reduce development costs.

[0055] In the description of this disclosure, it should be understood that if the terms "upper", "lower", "front", "rear", "left" and "right" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position 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 disclosure.

[0056] It should be noted that, in the embodiments of this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0057] The above are merely embodiments of this disclosure and are not intended to limit the scope of this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of the claims of this disclosure.

Claims

1. An integrated lighting driver circuit, characterized in that, The integrated lighting driver circuit includes: The LED driver control circuit is connected to each LED light panel located at the front of the vehicle and is used to convert the input vehicle power supply into a constant current power signal to drive each LED light panel according to the received control signal. The first step-down converter is connected to the pixelated projection light panel located at the front of the vehicle and is used to convert the input vehicle power supply into a constant voltage power supply signal to drive the pixelated projection light panel according to the received control signal.

2. The integrated light fixture drive circuit of claim 1, wherein, The control signals include a drive control signal and a first enable control signal. The drive control signal adopts the UART on CAN protocol, and the first enable control signal is used to enable the LED drive control circuit and the first buck converter.

3. The integrated lamp driver circuit of claim 2, wherein, The integrated lighting driver circuit further includes a transceiver connected to the first buck converter and the LED driver control circuit. The transceiver is used to receive the drive control signal at the level required for CAN physical layer transmission and transmit the drive control signal to the first buck converter and the LED drive control circuit at the TTL level of UART.

4. The integrated lamp driver circuit of claim 3, wherein, The integrated lighting drive circuit further includes a low-dropout regulator connected to the transceiver, the LED drive control circuit, and the first buck converter. The low-dropout regulator is used to convert the vehicle power signal into a stable power signal according to the received enable control signal, so as to provide stable power to the transceiver, the LED drive control circuit, and the first buck converter.

5. The integrated lamp driver circuit of claim 4, wherein, The integrated lighting drive circuit further includes at least one stepper controller connected to the transceiver and the low-dropout regulator for driving a stepper motor.

6. The integrated lamp driver circuit of claim 3, wherein, The LED driving control circuit includes: at least one boost converter connected to the vehicle power supply and a plurality of second buck converters connected to the boost converter and the transceiver, wherein the second buck converters are used to output constant current power to drive each of the LED panels.

7. The integrated lamp driver circuit of claim 6, wherein, The number of boost converters is determined based on the number of channels in the LED panel.

8. The integrated lamp driver circuit of claim 6, wherein, The second buck converter includes multiple programmable interfaces, which are connected to a load switch to output digital control signals that provide switching functionality, or the programmable interfaces are connected to a temperature sensor, the pins of the LED board, or an encoded resistor to acquire voltage.

9. The integrated lamp driver circuit of claim 6, wherein, The LED driving control circuit further includes a high-side switch connected to the second buck converter. The second buck converter is also used to output a switch control signal. The high-side switch is used to provide a switching function to the load connected thereto according to the switch control signal. The switch control signal is a PWM signal or a second enable control signal.

10. An integrated lamp driver, characterized by The integrated luminaire driver includes, from bottom to top, a heat sink, a mounting printed circuit board, a shield, a plastic cover, and a sealing ring, and is fixed with screws; the mounting printed circuit board is provided with an integrated luminaire driver circuit as described in any one of claims 1-9.

11. A vehicle characterized by comprising: The vehicle is equipped with an integrated lighting driver as described in claim 10.

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