CN216565656U

CN216565656U - Driving circuit applied to dynamic daytime running light

Info

Publication number: CN216565656U
Application number: CN202122750887.4U
Authority: CN
Inventors: 徐从洋; 李萌; 徐宝奇; 徐思阳
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-05-17
Anticipated expiration: 2031-11-11

Abstract

The utility model provides a driving circuit applied to a dynamic daytime running light, which comprises a power management module, a vehicle body power module, an MCU module, an LED driver module and a multi-channel output control module, wherein the power management module is used for controlling whether the vehicle body power module supplies power for the MCU module, and when a vehicle body is in a dormant mode, the power management module controls the vehicle body power module not to supply +5V voltage to the MCU module; when the message of lighting the car light is transmitted by the car body, the power management module controls the car body power module to provide +5V voltage for the MCU module, initializes the MCU module and sends the corresponding message of lighting the car light to the MCU module, thereby solving the problem that the input voltage range of the existing driving circuit is relatively narrow and cannot meet the design requirement of the dynamic daytime running light, ensuring that the input voltage range of the driving circuit is relatively wide and effectively ensuring that the dynamic daytime running light can normally work when the car body is started or stopped to generate low voltage.

Description

Driving circuit applied to dynamic daytime running light

Technical Field

The utility model relates to the technical field of vehicle lamp driving, in particular to a driving circuit applied to a dynamic daytime running lamp.

Background

With the development of driving safety and car light design concepts, the dynamic daytime running light has gradually become the mainstream configuration of the car signal light, the action of the dynamic daytime running light needs to be driven by the driving circuit, but the input voltage range of the existing driving circuit is relatively narrow, and the design requirement of the dynamic daytime running light cannot be met, for example, the dynamic daytime running light cannot normally work when a car body is started and stopped to generate low voltage, and even when the car body is short-time undervoltage, the problem that the car light is extinguished can also occur.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a driving circuit applied to a dynamic daytime running light, which solves the problems that the input voltage range of the existing driving circuit is relatively narrow and the design requirement of the dynamic daytime running light cannot be met, so that the input voltage range of the driving circuit is relatively wide, and the dynamic daytime running light can be effectively ensured to work normally when a vehicle body is started or stopped to generate low voltage.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model discloses a driving circuit applied to a dynamic daytime running light, which comprises a power management module, a vehicle body power module, an MCU module, an LED driver module and a multi-channel output control module, wherein the power management module is used for controlling whether the vehicle body power module supplies power for the MCU module, and when a vehicle body is in a dormant mode, the power management module controls the vehicle body power module not to provide +5V voltage for the MCU module; when the vehicle body transmits a message for lighting the vehicle lamp, the power management module controls the vehicle body power module to provide +5V voltage to the MCU module, initializes the MCU module and sends a corresponding message for lighting the vehicle lamp to the MCU module; the vehicle body power supply module is used for supplying power to the LED driver module, the power supply voltage range is 6-16V, and conditionally supplies power to the MCU module; the MCU module comprises an MCU chip and is used for receiving the message for lighting the vehicle lamp transmitted by the power management module and controlling the output of the multi-channel output control module and the output time sequence effect; the LED driver module comprises a TLD5190-1QV chip and is used for providing a +7.96V constant voltage source for the multi-channel output control module; the multichannel output control module comprises a TPS929120 chip and is used for receiving vehicle lighting signals sent by the MCU module and controlling the output of the LED load module; the LED load module comprises a plurality of LED lamp beads and is used for receiving and executing the control command output by the multi-channel output control module.

Further, the vehicle body POWER supply module comprises a filter circuit, in the filter circuit, the voltage POWER input by the vehicle body POWER supply module is grounded through a transient diode T1, meanwhile, the voltage POWER input by the vehicle body POWER supply module is grounded through a capacitor C1 and a capacitor C17 in sequence, the voltage POWER input by the vehicle body POWER supply module is connected with the LED driver module through a MOS transistor Q2, an MIS transistor Q1 and an inductor L1 in sequence, a first end of the resistor R7 is connected with a thirty-fourth pin of the MCU chip, a second end of the resistor R7 is grounded through a resistor R10, meanwhile, a second end of the resistor R7 is connected with a base of a diode Q3, an emitter of the diode Q3 is grounded, a collector of the diode Q3 is connected with the POWER supply management module through a resistor R3 and a resistor R2 in sequence, the capacitor C3 is connected with the capacitor C4 in parallel, and the capacitor C13 is connected with the capacitor C5 in parallel.

Further, the power management module includes a chip U3, the chip U3 is UJA1169, the first pin of the chip U3 is grounded, the second pin of the chip U3 is connected to the fifth pin of the MCU chip, the third pin of the chip U3 is connected to the twenty-sixth pin of the MCU chip, the fourth pin of the chip U3 is grounded, the fifth pin of the chip U3 is connected to the VCC1 terminal, meanwhile, the fifth pin of the chip U3 is grounded via a capacitor C38, the fifth pin of the chip U3 is grounded via a capacitor C39, the sixth pin of the chip U3 is connected to the fifth pin of the chip U3 via a resistor R33, meanwhile, the sixth pin of the chip U3 is connected to the fifteenth pin of the chip U3 via a diode Q8 and a resistor R31, the seventh pin of the chip U3 is connected to the sixth pin of the MCU chip U3, and the eighth pin of the chip U3 is connected to the tenth pin of the chip 38, a ninth pin of the chip U3 is connected to a twenty-fifth pin of the MCU chip, a tenth pin of the chip U3 is connected to a twenty-ninth pin of the MCU chip, a twelfth pin of the chip U3 is grounded via a resistor R35 and a capacitor C48, and meanwhile, a twelfth pin of the chip U3 is connected to a vehicle body wake-up line KL15, and a seventeenth pin and an eighteenth pin of the chip U3 are connected to a communication output terminal CANL and CANH, respectively.

Further, in the LED driver module, a forty-fourth pin of a chip U1 is grounded through a capacitor C15, meanwhile, a forty-fourth pin of the chip U1 is connected to the LED driver module, a forty-third pin and a forty-second pin of the chip U1 are both connected to a forty-fourth pin of the chip U1, a twenty-fourth pin of the chip U1 is connected to a forty-seventh pin of the MCU chip, a twenty-second pin of the chip U1 is connected to a forty-sixth pin of the MCU chip, a thirty-third pin of the chip U1 is connected to a forty-fifth pin of the MCU chip, and a thirty-second pin of the chip U1 is connected to a forty-fourth pin of the MCU chip.

Furthermore, in the MCU module, a fifth pin of the chip U2 is connected with a second pin of the chip U3, the sixth pin of the chip U2 is connected to the seventh pin of the chip U3, the seventh pin of the chip U2 is connected to the VCC1 terminal, meanwhile, the seventh pin of the chip U2 is connected with the eighth pin of the chip U2, the eighth pin of the chip U2 is connected with the ninth pin of the chip U2, meanwhile, the eighth pin of the chip U2 is connected with the tenth pin of the chip U2 through a capacitor C44, the tenth pin of the chip U2 is grounded, the capacitor C45 and the capacitor C43 are connected in parallel with the capacitor C44, the forty-fifth pin of the chip U2 is connected to the thirty-third pin of the chip U1, the forty-fourth pin of the chip U2 is connected to the thirty-second pin of the chip U1, the thirty-seventh pin of the chip U2 is connected with the eleventh pin of the chip U3, and the thirty-fourth pin of the chip U2 is connected with a vehicle body power supply module.

Further, in the multi-channel output control module, a first pin of a chip U9 is connected to a twentieth pin of the MCU chip, a second pin of the chip U9 is grounded via a capacitor C94, meanwhile, a second pin of the chip U9 is connected to a third pin of the chip U9, a fourth pin of the chip U9 is connected to a twenty-first pin of the MCU chip, a sixth pin of the chip U9 is connected to a seventh pin of the chip U9, meanwhile, a sixth pin of the chip U9 is connected to the LED driver module, a thirteenth pin of the chip U9 is a first output terminal, a thirteenth pin of the chip U9 is connected to a fourteenth pin of the chip U9, a fourteenth pin of the chip U9 is grounded via a capacitor C128, a fifteenth pin of the chip U9 is used as a second output terminal, and meanwhile, a fifteenth pin of the chip U9 is connected to a sixteenth pin of the chip U9, the sixteenth pin of the chip U9 is grounded through a capacitor C124, the seventeenth pin of the chip U9 is used as a third output terminal, meanwhile, the seventeenth pin of the chip U9 is connected with the eighteenth pin of the chip U9, the eighteenth pin of the chip U9 is grounded through a capacitor C120, the nineteenth pin of the chip U9 is used as a fourth output terminal, meanwhile, the nineteenth pin of the chip U9 is connected with the twentieth pin of the chip U9, the twentieth pin of the chip U9 is grounded through a capacitor C104, the twenty-first pin of the chip U9 is used as a fifth output terminal, meanwhile, the twenty-first pin of the chip U9 is connected with the twenty-second pin of the chip U9, the twenty-second pin of the chip U9 is grounded through a capacitor C99, the twenty-third pin of the chip U9 is used as a sixth output terminal, meanwhile, the twenty-third pin of the chip U9 is connected with the twenty-fourth pin of the chip U9, the twenty-fourth pin of the chip U9 is connected to ground via a capacitor C91.

The beneficial technical effects are as follows:

the utility model discloses a driving circuit applied to a dynamic daytime running light, which comprises a power management module, a vehicle body power module, an MCU module, an LED driver module and a multi-channel output control module, wherein the power management module is used for controlling whether the vehicle body power module supplies power for the MCU module, and when a vehicle body is in a dormant mode, the power management module controls the vehicle body power module not to provide +5V voltage for the MCU module; when the vehicle body transmits a message for lighting the vehicle lamp, the power management module controls the vehicle body power module to provide +5V voltage to the MCU module, initializes the MCU module and sends a corresponding message for lighting the vehicle lamp to the MCU module; the vehicle body power supply module is used for supplying power to the LED driver module, the power supply voltage range is 6-16V, and the vehicle body power supply module conditionally supplies power to the MCU module; the MCU module comprises an MCU chip and is used for receiving the message for lighting the vehicle lamp transmitted by the power management module and controlling the output of the multi-channel output control module and the output time sequence effect; the LED driver module comprises a TLD5190-1QV chip and is used for providing a +7.96V constant voltage source for the multi-channel output control module; the multichannel output control module comprises a TPS929120 chip and is used for receiving the vehicle lighting signal sent by the MCU module and controlling the output of the LED load module; the LED load module comprises a plurality of LED lamp beads and is used for receiving and executing a control command output by the multi-channel output control module, the problems that the input voltage range of the existing driving circuit is relatively narrow and the design requirement of the dynamic daytime running light cannot be met are solved, the input voltage range of the driving circuit is relatively wide, and the dynamic daytime running light can be effectively ensured to normally work when a vehicle body is started and stopped to generate low voltage.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic diagram of a filter circuit in a vehicle body power module of a driving circuit for a dynamic daytime running light according to the present invention;

FIG. 2 is a circuit diagram of a power management module of a driving circuit for a dynamic daytime running light according to the present invention;

FIG. 3 is a circuit diagram of an LED driver module applied in a driving circuit of a dynamic daytime running light according to the present invention;

FIG. 4 is a circuit diagram of an MCU module in a driving circuit for a dynamic daytime running light according to the present invention;

FIG. 5 is a circuit diagram of a multi-channel output control module applied to a driving circuit of a dynamic daytime running light according to the present invention;

FIG. 6 is a loop of a TLD5190-1QV chip in an LED driver module of a driving circuit for a dynamic daytime running light according to the present invention when the chip is in a boost state;

FIG. 7 is a loop of the TLD5190-1QV chip in the LED driver module in the driving circuit for the dynamic daytime running light according to the present invention when the chip is in a step-down state;

FIG. 8 is a graph showing the relationship between the resistance and the operating frequency of a TLD5190-1QV chip in an LED driver module of a driving circuit for a dynamic daytime running light according to the present invention;

FIG. 9 is a schematic diagram of a TLD5190-1QV chip output voltage setting circuit applied to an LED driver module in a driving circuit of a dynamic daytime running light according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The utility model discloses a driving circuit applied to a dynamic daytime running light, which comprises a power management module, a vehicle body power module, an MCU (microprogrammed control unit) module, an LED driver module and a multi-channel output control module, wherein the power management module is used for controlling whether the vehicle body power module supplies power for the MCU module, and when a vehicle body is in a sleep mode, the power management module controls the vehicle body power module not to supply +5V voltage to the MCU module; when the vehicle body transmits a message for lighting the vehicle lamp, the power management module controls the vehicle body power supply module to provide +5V voltage to the MCU module, initializes the MCU module and sends a corresponding message for lighting the vehicle lamp to the MCU module; the vehicle body power supply module is used for supplying power to the LED driver module, and the power supply voltage range is 6-16V; the MCU module comprises an MCU chip and is used for receiving the message for lighting the vehicle lamp transmitted by the power management module and controlling the output of the multi-channel output control module and the output time sequence effect; the LED driver module comprises a TLD5190-1QV chip and is used for providing a constant voltage source of +7.96V for the multi-channel output control module; the multi-channel output control module comprises a TPS929120 chip and is used for receiving a vehicle lighting signal sent by the MCU module and controlling the output of the LED load module; the LED load module comprises a plurality of LED lamp beads and is used for receiving and executing the control command output by the multi-channel output control module.

The respective blocks constituting the driving circuit are described in detail below.

Vehicle body power supply module

Referring to fig. 1, the vehicle body POWER module is used for supplying POWER to the LED driver module, the POWER supply voltage range is 6-16V, and conditionally supplies POWER to the MCU module under the control of the POWER management module, the vehicle body POWER module includes a wide filter circuit, in the filter circuit, the voltage POWER input by the vehicle body POWER module is grounded through a transient diode T1, meanwhile, the voltage POWER input by the vehicle body POWER module is grounded through a capacitor C1 and a capacitor C17 in sequence, the voltage POWER input by the vehicle body POWER module is connected to the LED driver module through a MOS transistor Q2, a MIS transistor Q1 and an inductor L1 in sequence, a first end Relax of a resistor R7 is connected to a thirty-fourth pin of the MCU chip, a second end of a resistor R7 is grounded through a resistor R10, a second end of a resistor R7 is connected to a base of a diode Q3, an emitter of a diode Q3 is grounded, a collector of a diode Q3 is connected to the POWER management module through a resistor R3 and a resistor R2 in sequence, the capacitor C3 is connected in parallel with the capacitor C4, and the capacitor C13 is connected in parallel with the capacitor C5.

The working principle of the filter circuit designed by the vehicle body power supply module is as follows:

the booster circuit has larger surge current at the moment of starting a circuit system, and a transient diode T1 at the front end of the filter circuit is used for inhibiting transient overvoltage during starting the absorption circuit; the capacitor in the filter circuit filters a POWER supply signal in the vehicle body POWER supply module, the capacitors are arranged in series and are arranged vertically, short-circuit faults caused by capacitor fracture caused by stress can be effectively prevented, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C13 and the inductor L1 form a pi-type filter circuit to obtain input voltage VIN, the input voltage VIN is connected to an input pin in the LED driver module, the Relay end is connected with a thirty-fourth pin of the MCU chip, when the Relay end has a high point of '1', the triode Q3 is grounded, and therefore the triode Q1 is turned on, and a POWER POWER supply can be connected into the pi-type filter circuit to generate the input voltage VIN to supply POWER to the LED driver module; when the Relax end has "0" low level, the transistor Q3 is turned off, and the transistor Q1 is turned off, and the input voltage VIN is 0.

Power supply management module

The power management module is used for controlling whether the vehicle body power supply module supplies power to the MCU module, and when the vehicle body is in a sleep mode, the power management module controls the vehicle body power supply module not to supply +5V voltage to the MCU module; when a vehicle body transmits a message for lighting a vehicle lamp, a power management module controls a vehicle body power module to provide +5V voltage to an MCU module, the MCU module is initialized, and a corresponding message for lighting the vehicle lamp is sent to the MCU module, a CAN communication translator is designed in the power management module by using a chip UJA1169, the specific circuit structure is shown in FIG. 2, a first pin of a chip U3 is grounded, a second pin of the chip U3 is connected with a fifth pin of the MCU chip, a third pin of the chip U3 is connected with a twenty-sixth pin of the MCU chip, a fourth pin of a chip U3 is grounded, a fifth pin of a chip U3 is connected with a VCC1 end, meanwhile, a fifth pin of the chip U3 is grounded through a capacitor C38, a fifth pin of the chip U3 is grounded through a capacitor C39, a sixth pin of the chip U3 is connected with a fifth pin of a chip U3 through a resistor R33, and meanwhile, a sixth pin of the chip U3 is connected with a fifteenth pin of the chip U3 through a diode Q8 and a resistor R31, the seventh pin of chip U3 connects the sixth pin of MCU chip, the eighth pin of chip U3 connects the sixty-three pins of MCU chip through resistance R38, the twenty-fifth pin of MCU chip is connected to the ninth pin of chip U3, the twenty-ninth pin of MCU chip is connected to the tenth pin of chip U3, the twelfth pin of chip U3 connects ground connection through resistance R35 and electric capacity C48, simultaneously, the twelfth pin of chip U3 connects automobile body line KL15 of awakening up, the seventeenth pin and the eighteenth pin of chip U3 connect communication output terminal CANL and CANH respectively.

LED driver module

The LED driver module comprises a TLD5190-1QV chip and is used for providing a constant voltage source of +7.96V for the multichannel output control module, referring to a specific circuit structure in FIG. 3, a forty-fourth pin of a chip U1 is grounded through a capacitor C15, meanwhile, a forty-fourth pin of a chip U1 is connected with the LED driver module, a forty-third pin and a forty-second pin of a chip U1 are both connected with a forty-fourth pin of a chip U1, a twenty-fourth pin of a chip U1 is connected with a forty-seventh pin of an MCU chip, a twenty-second pin of the chip U1 is connected with a forty-sixth pin of the MCU chip, a thirty-third pin of a chip U1 is connected with a forty-fifth pin of the MCU chip, and a thirty-second pin of the chip U1 is connected with a forty-fourth pin of the MCU chip.

The working principle of the DC-DC main drive designed by the LED driver module is as follows:

when the TLD5190-1QV chip is operating in a boost state (i.e., VIN < VOUT), as shown in fig. 6, the MOS transistor M1 is always on, M2 is always off, M3 is first turned on every cycle, and the inductor current is sensed (peak current control); m3 remains at the upper reference threshold until RSWCS (power on) is reached; m3 is off and M4 is on until the end of the cycle (recirculation); switches M3 and M4 alternate, behaving like a typical synchronous boost regulator.

When TLD5190-1QV is operated in the buck mode (i.e., VIN > VOUT) as shown in FIG. 7. M4 is always on, M3 is always off; each loop M2 opens and inductor current sensing; m2 stays at RSWCS until reaching the reference threshold, the lower, M2 is off, M1 is on for the pre-year period; switches M1 and M2 alternate, behaving like a typical synchronous buck regulator.

The switching frequency of the DC-DC converter can be set at 200-700kHz and can be controlled by a resistor R_FREQThe calibration was performed to adjust the switching frequency, as shown in FIG. 8, with the following formula R_FREQAnd switching frequency f:

f[kHz]＝5375*R[kΩ]-0.8

when the actual resistance 20K is selected, f [ kHz ] becomes 500 kHz.

Output voltage passes through the pair of resistors R_FB1,R_FB2,R_FB3To set; the formula is as follows:

therefore, according to design requirements, the calculation results are as follows: v_FBH-FBL＝150MV；R_FB1＝24KΩ,R_FB2＝470KΩ,R_FB3＝470KΩ,V_OUT＝0.15÷470×24940＝7.96V；

MCU module

The MCU module comprises an MCU chip for receiving a message transmitted by the power management module to light a vehicle lamp and controlling the output and output timing effects of the multi-channel output control module, and the specific structure thereof is as shown in fig. 4, wherein a fifth pin of a chip U2 is connected to a second pin of a chip U3, a sixth pin of a chip U2 is connected to a seventh pin of a chip U3, a seventh pin of a chip U2 is connected to a VCC1 terminal, meanwhile, a seventh pin of a chip U2 is connected to an eighth pin of a chip U2, an eighth pin of a chip U2 is connected to a ninth pin of a chip U2, meanwhile, an eighth pin of a chip U2 is connected to a tenth pin of a chip U2 through a capacitor C44, a tenth pin of a chip U2 is grounded, a capacitor C45 and a capacitor C43 are connected in parallel with a capacitor C44, a fifth pin of a chip forty pin of a chip U2 is connected to a thirty pin of a chip U1, a fourth pin of a chip forty U52 is connected to a fourth pin of a chip 1, and an eleventh pin of a chip 2 is connected to a chip U3, the thirty-fourth pin of the chip U2 is connected to the vehicle body power module.

Multi-channel output control module

The multichannel output control module comprises a TPS929120 chip for receiving a vehicle lighting signal sent by an MCU module and controlling the output of an LED load module, and referring to fig. 5, a first pin of a chip U9 is connected to a twentieth pin of the MCU chip, a second pin of a chip U9 is grounded via a capacitor C94, meanwhile, a second pin of a chip U9 is connected to a third pin of the chip U9, a fourth pin of a chip U9 is connected to a twenty-first pin of the MCU chip, a sixth pin of the chip U9 is connected to a seventh pin of a chip U9, meanwhile, a sixth pin of a chip U9 is connected to the LED driver module, a thirteenth pin of the chip U9 is a first output terminal, a thirteenth pin of the chip U9 is connected to a fourteenth pin of a chip U9, a fourteenth pin of a chip U9 is grounded via a capacitor C128, a fifteenth pin of the chip U9 is used as a second output terminal, and a fifteenth pin of a chip U9 is connected to a sixteenth pin of the chip U9, the sixteenth pin of the chip U9 is grounded through a capacitor C124, the seventeenth pin of the chip U9 is used as a third output terminal, meanwhile, the seventeenth pin of the chip U9 is connected with the eighteenth pin of the chip U9, the eighteenth pin of the chip U9 is grounded through a capacitor C120, the nineteenth pin of the chip U9 is used as a fourth output terminal, meanwhile, the nineteenth pin of the chip U9 is connected with the twentieth pin of the chip U9, the twentieth pin of the chip U9 is grounded through a capacitor C104, the twenty-first pin of the chip U9 is used as a fifth output terminal, meanwhile, the twenty-first pin of the chip U9 is connected with the twenty-second pin of the chip U9, the twenty-second pin of the chip U9 is grounded through a capacitor C99, the twenty-third pin of the chip U9 is used as a sixth output terminal, meanwhile, the twenty-third pin of the chip U9 is connected with the twenty-fourth pin of the chip U9, the twenty-fourth pin of the chip U9 is grounded through a capacitor C91, and the output driving circuit 3612, the single channel can reach 75 mA; the system supports common serial port communication TX/RX and is connected to an RXD/TXD pin of the MCU chip; the chip has 3 address bits, and the circuit system can support 8 chips (one serial port communication); PWM adjusts luminance through inside software setting, has realized the switching of daytime running light function and position lamp function.

LED load module

The LED load module comprises a plurality of LED lamp beads and is used for receiving and executing the control command output by the multi-channel output control module and realizing the dynamic effect of various guest-welcoming modes required by customers.

The input working voltage of the driving circuit applied to the dynamic daytime running light is relatively wide (the voltage is 6V-16V), the design requirement of the dynamic daytime running light is met, the normal work of the lamp when the vehicle body is started and stopped to generate low voltage is ensured, and the problem of short-time undervoltage extinguishment of the lamp is solved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A driving circuit for a dynamic daytime running light, comprising:

the power management module is used for controlling whether the vehicle body power supply module supplies power to the MCU module, and when the vehicle body is in a sleep mode, the power management module controls the vehicle body power supply module not to supply +5V voltage to the MCU module; when the vehicle body transmits a message for lighting the vehicle lamp, the power management module controls the vehicle body power module to provide +5V voltage to the MCU module, initializes the MCU module and sends a corresponding message for lighting the vehicle lamp to the MCU module;

the vehicle body power supply module is used for supplying power to the LED driver module, the power supply voltage range is 6-16V, and conditionally supplies power to the MCU module;

the MCU module comprises an MCU chip and is used for receiving the message for lighting the vehicle lamp transmitted by the power management module and controlling the output of the multi-channel output control module and the output time sequence effect;

the LED driver module comprises a TLD5190-1QV chip and is used for providing a constant voltage source of +7.96V for the multi-channel output control module;

the multi-channel output control module comprises a TPS929120 chip and is used for receiving the vehicle lighting signal sent by the MCU module and controlling the output of the LED load module;

and the LED load module comprises a plurality of LED lamp beads and is used for receiving and executing the control command output by the multi-channel output control module.

2. The driving circuit applied to the dynamic daytime running light is characterized in that the vehicle body power supply module comprises a filter circuit, in the filter circuit, the voltage POWER input by the vehicle body POWER supply module is grounded through a transient diode T1, meanwhile, the voltage POWER input by the vehicle body POWER module is grounded through a capacitor C1 and a capacitor C17 in sequence, the voltage POWER input by the vehicle body POWER module is connected with the LED driver module through an MOS (metal oxide semiconductor) tube Q2, an MIS tube Q1 and an inductor L1 in sequence, the first end of a resistor R7 is connected with the thirty-fourth pin of the MCU chip, the second end of the resistor R7 is grounded through a resistor R10, meanwhile, the second end of the resistor R7 is connected with the base of the diode Q3, the emitter of the diode Q3 is grounded, the collector of the diode Q3 is connected with the power management module through a resistor R3 and a resistor R2 in sequence, a capacitor C3 is connected with a capacitor C4 in parallel, and a capacitor C13 is connected with a capacitor C5 in parallel.

3. The driving circuit applied to the dynamic daytime running light as claimed in claim 1, wherein the power management module comprises a chip U3, the chip U3 is UJA1169, a first pin of the chip U3 is grounded, a second pin of the chip U3 is connected to a fifth pin of the MCU chip, a third pin of the chip U3 is connected to a twenty-sixth pin of the MCU chip, a fourth pin of the chip U3 is grounded, a fifth pin of the chip U3 is connected to a VCC1 terminal, meanwhile, a fifth pin of the chip U3 is grounded via a capacitor C38, a fifth pin of the chip U3 is grounded via a capacitor C39, a sixth pin of the chip U3 is connected to a fifth pin of the chip U3 via a resistor R33, and meanwhile, a sixth pin of the chip U3 is connected to a fifteenth pin of the chip U3 via a diode Q8 and a resistor R31, and a seventh pin of the chip U3 is connected to the MCU chip, the eighth pin of the chip U3 is connected with the sixty-third pin of the MCU chip through a resistor R38, the ninth pin of the chip U3 is connected with the twenty-fifth pin of the MCU chip, the tenth pin of the chip U3 is connected with the twenty-ninth pin of the MCU chip, the twelfth pin of the chip U3 is grounded through a resistor R35 and a capacitor C48, meanwhile, the twelfth pin of the chip U3 is connected with a vehicle body wake-up line KL15, and the seventeenth pin and the eighteenth pin of the chip U3 are respectively connected with a communication output terminal CANL and CANH.

4. The driving circuit applied to the dynamic daytime running light as claimed in claim 1, wherein in the LED driver module, a forty-fourth pin of a chip U1 is grounded through a capacitor C15, meanwhile, a forty-fourth pin of the chip U1 is connected to the LED driver module, a forty-third pin and a forty-second pin of the chip U1 are both connected to a forty-fourth pin of the chip U1, a twenty-fourth pin of the chip U1 is connected to a forty-seventh pin of the MCU chip, a twenty-second pin of the chip U1 is connected to a forty-sixth pin of the MCU chip, a thirty-third pin of the chip U1 is connected to a forty-fifth pin of the MCU chip, and a thirty-second pin of the chip U1 is connected to a forty-fourth pin of the MCU chip.

5. The driving circuit applied to the dynamic daytime running light as claimed in claim 1, wherein in the MCU module, a fifth pin of a chip U2 is connected to the second pin of a chip U3, a sixth pin of the chip U2 is connected to the seventh pin of a chip U3, a seventh pin of the chip U2 is connected to a VCC1 terminal, a seventh pin of the chip U2 is connected to the eighth pin of the chip U2, an eighth pin of the chip U2 is connected to the ninth pin of the chip U2, an eighth pin of the chip U2 is connected to the tenth pin of the chip U2 through a capacitor C44, a tenth pin of the chip U2 is grounded, a capacitor C45 and a capacitor C43 are connected in parallel to the capacitor C44, a forty-fifth pin of the chip U2 is connected to the thirty-third pin of the chip U1, a forty-fourth pin of the chip U2 is connected to the thirty-third pin of the chip U1, and an eleventh pin of the chip U3872 is connected to the chip U3646, and the thirty-fourth pin of the chip U2 is connected with a vehicle body power supply module.

6. The driving circuit applied to the dynamic daytime running light of claim 1, wherein in the multi-channel output control module, a first pin of a chip U9 is connected to a twentieth pin of the MCU chip, a second pin of the chip U9 is grounded via a capacitor C94, meanwhile, a second pin of the chip U9 is connected to a third pin of the chip U9, a fourth pin of the chip U9 is connected to a twenty-first pin of the MCU chip, a sixth pin of the chip U9 is connected to a seventh pin of the chip U9, meanwhile, a sixth pin of the chip U9 is connected to the LED driver module, a thirteenth pin of the chip U9 is a first output terminal, meanwhile, a thirteenth pin of the chip U9 is connected to a fourteenth pin of the chip U9, a fourteenth pin of the chip U9 is grounded via a capacitor C128, a fifteenth pin of the chip U9 is used as a second output terminal, meanwhile, a fifteenth pin of the chip U9 is connected to a sixteenth pin of the chip U9, a sixteenth pin of the chip U9 is grounded through a capacitor C124, a seventeenth pin of the chip U9 serves as a third output terminal, meanwhile, a seventeenth pin of the chip U9 is connected to an eighteenth pin of the chip U9, an eighteenth pin of the chip U9 is grounded through a capacitor C120, a nineteenth pin of the chip U9 serves as a fourth output terminal, meanwhile, a nineteenth pin of the chip U9 is connected to a twentieth pin of the chip U9, a twentieth pin of the chip U9 is grounded through a capacitor C104, a twenty-first pin of the chip U9 serves as a fifth output terminal, meanwhile, a twenty-first pin of the chip U9 is connected to a twenty-second pin of the chip U9, a twenty-second pin of the chip U9 is grounded through a capacitor C99, and a twenty-third pin of the chip U9 serves as a sixth output terminal, meanwhile, the twenty-third pin of the chip U9 is connected to the twenty-fourth pin of the chip U9, and the twenty-fourth pin of the chip U9 is grounded through a capacitor C91.