CN203225079U

CN203225079U - Novel drive circuit

Info

Publication number: CN203225079U
Application number: CN 201320262419
Authority: CN
Inventors: 李丐腾; 李焕富
Original assignee: Shanghai Flyco Electrical Appliance Co Ltd
Current assignee: Shanghai Flyco Electrical Appliance Co Ltd
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-10-02
Anticipated expiration: 2023-05-15

Abstract

The utility model discloses a novel drive circuit including a single-chip microprocessor and a plurality of drive ports. Output terminal of the drive ports are connected with an external circuit. The single-chip microprocessor is provided with a plurality of I/O interfaces. The I/O interfaces are divided into multiple groups of drive output terminals. The drive output terminals are connected with the corresponding drive ports respectively, wherein I/O ports in each group of the drive output terminals are connected with each other. According to the utility model, the idle I/O ports of the single-chip microprocessor are used as drive, so that a complicated drive circuit is removed, quantity of components and parts is reduced and integration degree is improved. At the same time, production cost is reduced. Compared with the prior art, technical progress is embodied.

Description

New drive circuit

Technical field

The utility model relates to a kind of new drive circuit, specifically, is a kind of for multidigit nixie tube drives or the power tube of BUCK circuit (buck translation circuit) drives driving circuit.

Background technology

Existing BUCK circuit generally is to come the driving power pipe with special-purpose BUCK drives chip such as MC34063, perhaps comes the driving power pipe by the Micro Controller Unit (MCU) driving push-pull circuit, as depicted in figs. 1 and 2.Use BUCK drives chip or pass through push-pull circuit driving power pipe, components and parts are a lot, the cost height, and integrated level is low, and the production reliability also reduces greatly.

Existing multidigit number tube drive circuit generally drives or use single-chip microcomputer to promote triode with special chip such as UL2003 or field effect transistor realizes, as shown in Figure 3 and Figure 4.Use special-purpose multidigit number pipe driving chip or drive multidigit nixie tube cost height with single-chip microcomputer promotion triode or field effect transistor, integrated level is low, and the production reliability reduces greatly.

So those skilled in the art are necessary further to improve the sort circuit design, make product meet the economy requirement more.

Summary of the invention

At the defective of above-mentioned prior art and the technical matters of existence, the utility model provides a kind of new drive circuit, to overcome problems such as above-mentioned driving circuit components and parts are many, cost is high, integrated level is low.

For solving the problems of the technologies described above, the utility model comprises that single-chip microcomputer and several drive port, the output of described driving port links to each other with external circuits, described single-chip microcomputer is provided with a plurality of I/O mouths, described a plurality of I/O mouth is divided into and some groups of driving outputs, described driving output links to each other with mutual corresponding driving port, and wherein, every group of I/O mouth that drives in the output interconnects.

As a kind of preferred version of the present utility model, comprise four I/O mouths in described every group of driving output.

As a kind of preferred version of the present utility model, described single-chip microcomputer is 51 Series chip.

As a kind of preferred version of the present utility model, described external circuits is the BUCK circuit.

As a kind of preferred version of the present utility model, described external circuits is the multidigit nixie tube circuit.

Technique effect of the present utility model is the no I/O mouth of single-chip microcomputer is used as driving, has saved complicated driving circuit, has reduced component number, integrated level height, has reduced production cost simultaneously.

Description of drawings

Below in conjunction with accompanying drawing and preferred implementation the utility model is described in further detail.

Fig. 1 be in the prior art in the BUCK circuit with the driving circuit figure of MC34063 or similar special chip;

Fig. 2 uses push-pull circuit as the driving circuit figure that drives in the BUCK circuit in the prior art;

Fig. 3 is with UL2003 or similarly drive the driving circuit figure of chip drives multidigit nixie tube in the prior art;

Fig. 4 is the driving circuit figure that drives charactron in the prior art with triode or similar device;

Fig. 5 is the circuit diagram that the utility model is used to drive the multidigit nixie tube circuit;

Fig. 6 is the circuit diagram that the utility model is used for the BUCK drives.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, further illustrate advantage of the present utility model and with respect to the outstanding contributions of prior art, understandable, following embodiment only is the detailed description to the preferable embodiment of the utility model, should not be construed as any restriction to technical solutions of the utility model.

New drive circuit of the present utility model, comprise that single-chip microcomputer and several drive port, the output of described driving port links to each other with external circuits, described single-chip microcomputer is provided with a plurality of I/O mouths, described a plurality of I/O mouth is divided into and some groups of driving outputs, described driving output links to each other with mutual corresponding driving port, and wherein, every group of I/O mouth that drives in the output interconnects.Every group of I/O mouth that drives in the output all is under the input state, to be converted to output state one by one guaranteeing, avoiding the I/O mouth in the single-chip microcomputer inconsistent because of level, and causes the situation generation of crashing.Wherein, single-chip microcomputer can be 51 Series chip.

As shown in Figure 5, P10-P13, P20-P23, P30-P33 and P40-P43 are respectively the I/O mouth of single-chip microcomputer, and these 16 I/O mouths are divided into four groups.Along with the single-chip microcomputer manufacturing cost reduces, the price that increases I/O is more much lower than peripheral component, and the single-chip processor i/o in now a lot of practical applications does not all use up, and can be used in parallel the driving.Four I/O mouths of P10-P13 are connected, and four I/O mouths of P20-P23 connect, and four I/O mouths of P30-P33 connect, and four I/O mouths of P40-P43 connect, and form four groups so respectively and drive output, can be used for driving group of four figures pipe circuit.When the I/O of single-chip microcomputer mouth is used as in parallel the driving, guarantee that the whole I/O mouths as driving in parallel are under the input state, be converted to output state more one by one, inconsistent with each I/O mouth level of avoiding the single-chip microcomputer parallel connection, and the situation that causes crashing produces.

As shown in Figure 6, PWM0-PWMN is respectively the I/O mouth of single-chip microcomputer, and PWM0-PWMN is set to one group and drives output.Since single I/O mouth driving force a little less than, can't realize the purpose that drives, so with the parallel connection of a plurality of I/O mouth, strengthen whole driving force in the mode that improves parallel-current.

The utility model drives by the no I/O mouth of single-chip microcomputer is used as, and has saved complicated driving circuit, has reduced component number, integrated level height, has reduced production cost simultaneously.The prior art of comparing has embodied outstanding technical progress.

Below the preferred embodiment of the invention is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all modification that is equal to or replacement under the prerequisite of the invention spirit, the modification that these are equal to or replacement all are included in the application's claim institute restricted portion.

Claims

1. new drive circuit, comprise that single-chip microcomputer and several drive port, the output of described driving port links to each other with external circuits, it is characterized in that, described single-chip microcomputer is provided with a plurality of I/O mouths, and described a plurality of I/O mouths are divided into and some groups of driving outputs, and described driving output links to each other with mutual corresponding driving port, wherein, every group of I/O mouth that drives in the output interconnects.

2. new drive circuit as claimed in claim 1 is characterized in that, comprises four I/O mouths in described every group of driving output.

3. new drive circuit as claimed in claim 1 is characterized in that, described single-chip microcomputer is 51 Series chip.

4. new drive circuit as claimed in claim 1 is characterized in that, described external circuits is the BUCK circuit.

5. new drive circuit as claimed in claim 1 is characterized in that, described external circuits is the multidigit nixie tube circuit.