CN209593839U

CN209593839U - A kind of timing lamp circuit

Info

Publication number: CN209593839U
Application number: CN201822148035.6U
Authority: CN
Inventors: 孙路闯; 王波
Original assignee: Shanghai Xinyao Electronics Co Ltd
Current assignee: Shanghai Xinyao Electronics Co Ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2019-11-05
Anticipated expiration: 2028-12-20

Abstract

The utility model relates to electronic circuit field more particularly to a kind of timing lamp circuit, including a timing chip, timing chip is equipped with multiple drive outputs, connects LED light group between each drive output and a LED cathode voltage end；Drive output is according to setting sequential export low level lightening LED lamp；Timing control end, including the first pin, second pin, the first pin connects high level, and when second pin connects high level, select multiple LED light groups works in the first working condition；First pin connects high level, when second pin connects low level, the second working condition；First pin connects low level, when second pin connects high level, third working condition；First pin connects low level, when second pin connects low level, the 4th working condition.The utility model has the advantages that realize that LED is successively lighted under same time interval, and the circuit energy free switching timing and non-sequential lighting and wherein any one LED ought occur capable of cutting off all LED power supplies under open circuit conditions.

Description

A kind of timing lamp circuit

Technical field

The utility model relates to electronic circuit field more particularly to a kind of timing lamp circuits.

Background technique

With the continuous development of automotive lighting technology and in order to meet consumer to the diversified demand of car light, Automobile Lamp diversification lighting has become a kind of main trend, and the vehicle that wherein turn signal timing is lighted has occurred in the majority of consumers face Before, sequence circuit is to be formed by most basic logic gates plus feedback logic circuit (being output to input) or combination of devices Circuit, with combinational circuit most essential difference be sequence circuit have memory function.And present turn signal sequence circuit Core is mostly single-chip microcontroller, and needs for vehicle 13.5V voltage to be converted into the linear voltage regulator of the operating voltage 5V of single-chip microcontroller Chip, the cost that the two devices just directly limit sequence circuit reduce it can not again.

Utility model content

The purpose of the utility model is to provide a kind of timing lamp circuits, solve the above technical problem.

The technical issues of the utility model is solved can be realized using following technical scheme:

A kind of timing lamp circuit, which is characterized in that including a timing chip, it is defeated that the timing chip is equipped with multiple drivings Outlet connects the LED light group that several LED are composed in series between each drive output and a LED cathode voltage end；Institute It states drive output and lights the LED light according to setting sequential export low level；

Timing control end, including the first pin, second pin, first pin connect high level, and the second pin connects When high level, select multiple LED light groups works in the first working condition；First pin connects high level, and described When two pins connect low level, multiple LED light groups work in the second working condition, and first pin connects low level, described When second pin connects high level, multiple LED light groups work in third working condition, and first pin connects low level, When the second pin connects low level, multiple LED light groups work in the 4th working condition.

Preferably, further include decompression converting unit, be connected between power input and LED cathode voltage end, the drop Pressing converting unit includes a power MOS pipe and counnter attack diode, and the power MOS pipe and the counnter attack diode connect LED group simultaneously Connection anode.

Preferably, LED cathode voltage end also passes through resistor voltage divider circuit connection voltage adjustable side.

Preferably, the drive output is made of the LED group of 7 and 3 strings.

Preferably, when the first working condition, every 8 paths of LEDs lamp group is one group of timing at the timing control end；The timing For control terminal when the second working condition, every 4 paths of LEDs lamp group is one group of timing；The timing control end when third working condition, Every 2 paths of LEDs lamp group is one group of timing；When four working conditions, every 1 paths of LEDs lamp group is one group of timing at the timing control end.

Preferably, the timing chip includes a diagnosis end, is worked normally after the diagnosis termination pull-up resistor in chip When export low level, can be exported when failure of chip high level alarm.

Preferably, the selectable connection high level in the timing control end or ground terminal, in time series pattern and non-sequential Switch between mode, when the timing control end connects ground terminal, the timing chip operation is in non-sequential mode, the timing When control terminal connects high level, the timing chip operation is in the first time series pattern.

The beneficial effect of above-mentioned technical proposal is:

The utility model is realized that LED is successively lighted under same time interval, is changed by designing a kind of timing lamp circuit It is apt to existing the case where can only capable of just accomplishing timing lighting using single-chip microcontroller as core, reduces timing lighting cost, it can also be used to vapour The diversified lighting of vehicle car light keeps automobile lamp lighting effect more beautiful, and the dynamic effect of timing lighting can more cause to drive It sails personnel's note that keep driving process safer, and the circuit energy free switching timing and non-sequential lighting and works as it In any one LED occur capable of cutting off all LED power supplies under open circuit conditions, and generate high level alarm.

Detailed description of the invention

Fig. 1 is the circuit diagram of the utility model

Component label instructions:

STOP/TAIL power input

NTD2955 power MOS pipe

NCV7683 timing chip

R1~R7 resistance

C1~C4 capacitor

MRA4003T3G diode

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are in the premise for not making creative work Under every other embodiment obtained, fall within the protection scope of the utility model.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model It limits.

Shown in referring to Fig.1, a kind of timing lamp circuit, which is characterized in that including a timing chip, the timing chip is set Have

Multiple drive outputs connect several LED string between each drive output and a LED cathode voltage end Join the LED light group of composition；The drive output lights the LED light according to setting sequential export low level；

As a kind of preferred embodiment of the utility model, further includes decompression converting unit, be connected to power input Between LED cathode voltage end, decompression converting unit includes a power MOS pipe and counnter attack diode, power MOS pipe and described anti- Anti- diode connects LED group anode in parallel.Every paths of LEDs cathode connects timing chip OUT1~OUT7 interface in order, passes through chip OUT1~OUT7 successively reaches timing lighting purpose by same time interval output low level to make 7 paths of LEDs successively light.

As a kind of preferred embodiment of the utility model, LED cathode voltage end also passes through resistor voltage divider circuit company Voltage adjustable side is connect, plays the role of adjusting LED group cathode voltage Vstring.

As a kind of preferred embodiment of the utility model, drive output is made of the LED group of 7 and 3 strings.

As a kind of preferred embodiment of the utility model, timing control end is controlled by way of setting high or low level Timing processed, when the first working condition, every 8 paths of LEDs lamp group is one group of timing at timing control end；The timing control end is in second When working condition, every 4 paths of LEDs lamp group is one group of timing；The timing control end is when third working condition, every 2 paths of LEDs lamp group For one group of timing；When four working conditions, every 1 paths of LEDs lamp group is one group of timing at the timing control end.

As a kind of preferred embodiment of the utility model, timing chip includes a diagnosis end, diagnosis termination pull-up electricity Low level is exported when chip works normally after resistance, high level alarm can be exported when failure of chip.

As a kind of preferred embodiment of the utility model, the selectable connection high level in timing control end or ground connection End, to switch between time series pattern and non-sequential mode, when timing control end connects ground terminal, timing chip operation is when non- Sequence pattern, timing control end will start a disconnected entirely disconnected function, guarantee that any paths of LEDs open circuit all will cutting in LED group when being grounded Remaining a few road power supply；When timing control end connects high level, timing chip operation is in the first time series pattern.

As a kind of preferred embodiment of the utility model, the utility model circuit passes through timing chip and its periphery electricity Road composition can substitute the timing lamp circuit that single-chip microcontroller is core.

The foregoing is merely the utility model preferred embodiment, be not intended to limit the embodiments of the present invention and Protection scope should can appreciate that all in the utility model specification and diagram to those skilled in the art Hold made equivalent replacement and obviously change obtained scheme, the protection model of the utility model should all be included in In enclosing.

Claims

1. a kind of timing lamp circuit, which is characterized in that including a timing chip, the timing chip is equipped with

Multiple drive outputs connect several LED and connect group between each drive output and a LED cathode voltage end At LED light group；The drive output lights the LED light according to setting sequential export low level；

Timing control end, including the first pin, second pin, first pin connect high level, and the second pin connects high electricity Usually, select multiple LED light groups works in the first working condition；First pin connects high level, and described second draws When foot connects low level, multiple LED light groups work in the second working condition, and first pin connects low level, and described second When pin connects high level, multiple LED light groups work in third working condition, and first pin connects low level, described When second pin connects low level, multiple LED light groups work in the 4th working condition.

2. a kind of timing lamp circuit according to claim 1, which is characterized in that further include decompression converting unit, connection Between power input and LED cathode voltage end, the decompression converting unit includes a power MOS pipe and counnter attack diode, The power MOS pipe and the counnter attack diode connect LED group anode in parallel.

3. a kind of timing lamp circuit according to claim 1, which is characterized in that LED cathode voltage end also passes through One resistor voltage divider circuit connects voltage adjustable side.

4. a kind of timing lamp circuit according to claim 1, which is characterized in that the drive output is by 7 and 3 strings LED group composition.

5. a kind of timing lamp circuit according to claim 1, which is characterized in that the timing control end is in the first work When state, every 8 paths of LEDs lamp group is one group of timing；When the second working condition, every 4 paths of LEDs lamp group is one at the timing control end Group timing；When third working condition, every 2 paths of LEDs lamp group is one group of timing at the timing control end；The timing control end in When four working conditions, every 1 paths of LEDs lamp group is one group of timing.

6. a kind of timing lamp circuit according to claim 1, which is characterized in that the timing chip includes a diagnosis End, the diagnosis export low level when chip works normally after terminating pull-up resistor, high level can be exported when failure of chip Alarm.

7. a kind of timing lamp circuit according to claim 1, which is characterized in that the selectable company in timing control end High level or ground terminal are connect, to switch between time series pattern and non-sequential mode, when the timing control end connects ground terminal, The timing chip operation is in non-sequential mode, and when the timing control end connection high level, the timing chip operation is in the One time series pattern.