CN207150474U - A kind of stepper motor driving circuit simplified - Google Patents
A kind of stepper motor driving circuit simplified Download PDFInfo
- Publication number
- CN207150474U CN207150474U CN201721201021.5U CN201721201021U CN207150474U CN 207150474 U CN207150474 U CN 207150474U CN 201721201021 U CN201721201021 U CN 201721201021U CN 207150474 U CN207150474 U CN 207150474U
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- circuit
- main control
- control chip
- chip
- drive circuit
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- Control Of Direct Current Motors (AREA)
- Control Of Stepping Motors (AREA)
Abstract
The utility model discloses a kind of stepper motor driving circuit simplified, including switching power circuit, H bridge motor-drive circuit, current detection circuit and main control chip；Wherein, switching power circuit includes switching power source chip and voltage stabilizing chip, after voltage is reduced to 12V voltages by external power supply by switching power source chip, then stabilizes to 5V voltages by voltage stabilizing chip and is powered for main control chip, H bridge motor-drive circuit；External signal input circuit is connected with main control chip；Main control chip is connected with H bridge motor-drive circuit and controls H bridge motor-drive circuit to work；Current detection circuit connects H bridge motor-drive circuit, and the electric current by H bridge motor-drive circuit is sampled and inputs main control chip after current signal is amplified by operational amplifier by current detection circuit.Simplify stepper motor driving circuit, save the grid drive chip on H bridge circuit driver circuits, save the transformer in switching power circuit, save production cost.
Description
Technical field
A kind of stepper motor driver is the utility model is related to, more particularly, to a kind of driving stepper motor electricity simplified
Road.
Background technology
Stepper motor is widely used in various automation control systems as executive component.For make stepper motor according to
It is required that it is operated, it is necessary to special control driver is configured for it.Existing Stepping Motor Control Driver generally use
The Switching Power Supply being made up of transformer is powered, and the conventional H bridge circuit drivers circuit of stepper motor is controlled with grid drive chip
System.This causes that the drive circuit of stepper motor driver is excessively complicated, and circuit is bulky, and cost is high.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of stepper motor driving circuit simplified, and simplifies stepping
Motor-drive circuit, the grid drive chip on H bridge circuit driver circuits is saved, save the transformer in switching power circuit, saved
About production cost.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of driving stepper motor electricity simplified
Road, including switching power circuit, H bridge motor-drive circuit, current detection circuit and main control chip；Wherein, switching power circuit
Including switching power source chip and voltage stabilizing chip, after voltage is reduced to 12V voltages by external power supply by switching power source chip, then pass through
Voltage stabilizing chip stabilizes to 5V voltages and powered for main control chip, H bridge motor-drive circuit；It is defeated that external signal is connected with main control chip
Enter circuit, and the pulse of stepper motor, direction, enable signal are transferred to main control chip by external signal input circuit；Master control
Chip is connected with H bridge motor-drive circuit and controls H bridge motor-drive circuit to work；Current detection circuit connection H bridges motor drives
Dynamic circuit, current detection circuit are sampled the electric current by H bridge motor-drive circuit and by operational amplifier by electric current
Main control chip is inputted after signal amplification.
The further preferred scheme of the utility model：Described switching power circuit includes external power supply input port, institute
The external power supply input port connection over-current detection circuit stated, described over-current detection circuit is connected to main control chip, described
Over-current detection circuit carries out sample detecting to the total current for inputting H bridge motor-drive circuit.
The further preferred scheme of the utility model：Described H bridges power supply after switching power source chip by exporting 12V
Voltage, 12V voltages export 5V voltages, described H bridges power supply connection voltage detecting circuit, described electricity by voltage stabilizing chip
Pressure detection circuit is connected to main control chip.
The further preferred scheme of the utility model：Described H bridge motor-drive circuit is included in circuit structure identical
Bridge left arm drive circuit, upper bridge right arm drive circuit, lower bridge left arm drive circuit and lower bridge right arm drive circuit.
The further preferred scheme of the utility model：Described lower bridge left arm drive circuit includes high-voltage MOS pipe and low pressure
Metal-oxide-semiconductor, the drain electrode of described high-voltage MOS pipe source electrode and low pressure metal-oxide-semiconductor are connected and connect to stepper motor, described high-pressure MOS
The grid connection high-voltage driving circuit of pipe, the grid connection low-voltage driving circuit of described low pressure metal-oxide-semiconductor.
The further preferred scheme of the utility model：Described high-voltage driving circuit includes multiple triodes, diode, electricity
Hold, resistance is built.
The further preferred scheme of the utility model：Described low-voltage driving circuit includes multiple triodes, resistance is built
Form.
The further preferred scheme of the utility model：Described main control chip uses the monolithic with 3 tunnel complementation PWM passages
Machine.
The further preferred scheme of the utility model：Described external signal input circuit includes subdivision toggle switch electricity
Road, electric current toggle switch circuit and signal input part, described signal input part are connected to master control core by signal processing circuit
Piece, described subdivision toggle switch circuit, electric current toggle switch circuit are connected respectively to main control chip.
The further preferred scheme of the utility model：Described signal input part, which will input, includes pulse signal, direction is believed
Number and enable signal.
Compared with prior art, the utility model has the advantage of no longer taken in switching power circuit using transformer
Circuit is built, but transformer is saved using the high-end buck topological structure of switching power source chip so that switching power circuit periphery
Circuit is simple, and input range is wide.Do not use conventional grid drive chip to control in H bridge motor-drive circuit, but use
The driver circuit of independent component composition drives H bridges to realize, reduces production cost.The utility model simplifies whole stepping electricity
Drive circuit, the control of whole circuit is completed by main control chip, simplify external conversion circuit of the present utility model.This reality
A kind of stepper motor driving circuit simplified is constituted with new.
Brief description of the drawings
Fig. 1 is theory diagram of the present utility model；
Fig. 2 is switching power circuit；
Fig. 3 is main control chip and its peripheral circuit；
Fig. 4 is H bridge motor-drive circuit；
Fig. 5 is that electric current uses circuit；
Fig. 6 is external signal input circuit.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.
As shown in Figures 1 to 6：A kind of stepper motor driving circuit simplified, including switching power circuit 1, H bridges motor drive
Dynamic circuit 2, current detection circuit 3 and main control chip U3；Wherein, switching power circuit 1 includes switching power source chip U1 and voltage stabilizing
Chip U7, after voltage is reduced to 12V voltages by external power supply by switching power source chip U1, then 5V stabilized to by voltage stabilizing chip U7
Voltage is main control chip U3, H bridge motor-drive circuit 2 is powered；External signal input circuit 4 is connected with main control chip U3, and
The pulse of stepper motor, direction, enable signal are transferred to main control chip U3 by external signal input circuit 4；Main control chip U3
It is connected with H bridge motor-drive circuit 2 and controls H bridge motor-drive circuit 2 to work；Current detection circuit 3 connects the driving of H bridges motor
Circuit 2, current detection circuit 3 by the electric current by H bridge motor-drive circuit 2 sampled and by operational amplifier U2A,
U2B inputs main control chip U3 after current signal is amplified.
Switching power circuit 1 includes external power supply input port J1, external power supply input port J1 connections over-current detection electricity
Road, over-current detection circuit are connected to main control chip U3, and over-current detection circuit is carried out to the total current for inputting H bridge motor-drive circuit
Sample detecting.Resistance R1, R2, R3, R4, R5, triode Q1, diode D1, electric capacity C3, C4 form over-current detection circuit, when this
Its device is protected when utility model accesses overtension or excessive electric current.
For H bridge power supply VH by exporting 12V voltages after switching power source chip U1,12V voltages are defeated by voltage stabilizing chip U7
Go out 5V voltages, H bridge power supply VH connection voltage detecting circuits, voltage detecting circuit is connected to main control chip U3.Voltage detecting
Circuit includes the composition such as resistance R9, R75, R76, electric capacity C40.Switching power source chip U1 in the utility model can be used
The chip of LinkSwitch-TN Family series realizes that voltage stabilizing chip U7 then uses model 78M05 chip.
H bridge motor-drive circuit 2 include circuit structure identical on bridge left arm drive circuit, upper bridge right arm drive circuit,
Lower bridge left arm drive circuit and lower bridge right arm drive circuit.
Lower bridge left arm drive circuit includes high-voltage MOS pipe VT3H and low pressure metal-oxide-semiconductor VT3L, high-voltage MOS pipe VT3H source electrodes with
Low pressure metal-oxide-semiconductor VT3L drain electrode is connected and connect to stepper motor, and high-voltage MOS pipe VT3H grid connects high-voltage driving circuit,
Low pressure metal-oxide-semiconductor VT3L grid connection low-voltage driving circuit.High-voltage MOS pipe in H bridge motor-drive circuit 2 include VT1H,
VT2H, VT3H, VT4H, low pressure metal-oxide-semiconductor include VT1L, VT2L, VT3L, VT4L.
High-voltage driving circuit includes multiple triodes, diode, electric capacity, resistance and built.Triode Q4, Q20, Q21,
Diode D12, D13, electric capacity C36, resistance R73, R56, R68, R64, R47, R57 build bootstrapping circuit driving high-voltage MOS pipe
VT3H。
Low-voltage driving circuit includes multiple triodes, resistance is built.Triode Q8, Q12, Q22, resistance R60, R89,
R74, R48 build push-pull configuration circuit driving low pressure metal-oxide-semiconductor VT3L.
Main control chip U3 uses the single-chip microcomputer with 3 tunnel complementation PWM passages.Such as dsPIC, TI DSP, SPMC75 series
Single-chip microcomputer etc..
External signal input circuit 4 includes subdivision toggle switch circuit, electric current toggle switch circuit and signal input part, letter
Number input is connected to main control chip U3, subdivision toggle switch circuit, electric current toggle switch circuit point by signal processing circuit
Main control chip U3 is not connected to.
Signal input part, which will input, includes pulse signal, direction signal and enable signal.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
- A kind of 1. stepper motor driving circuit simplified, it is characterised in that including switching power circuit, H bridge motor-drive circuit, Current detection circuit and main control chip；Wherein, switching power circuit includes switching power source chip and voltage stabilizing chip, and external power supply leads to Cross after voltage is reduced to 12V voltages by switching power source chip, then 5V voltages are stabilized to as main control chip, H bridges electricity by voltage stabilizing chip Drive circuit is powered；External signal input circuit is connected with main control chip, and it is by external signal input circuit that stepping is electric The pulse of machine, direction, enable signal are transferred to main control chip；Main control chip is connected with H bridge motor-drive circuit and controls H bridges electric Drive circuit works；Current detection circuit connects H bridge motor-drive circuit, and current detection circuit will be driven by H bridges motor The electric current of circuit is sampled and inputs main control chip after current signal is amplified by operational amplifier.
- A kind of 2. stepper motor driving circuit simplified according to claim 1, it is characterised in that described Switching Power Supply Circuit includes external power supply input port, described external power supply input port connection over-current detection circuit, the inspection of described excessively stream Slowdown monitoring circuit is connected to main control chip, and described over-current detection circuit samples to the total current for inputting H bridge motor-drive circuit Detection.
- A kind of 3. stepper motor driving circuit simplified according to claim 2, it is characterised in that described H bridges power supply electricity Source exports 5V voltages, described H bridges power supply electricity by exporting 12V voltages, 12V voltages after switching power source chip by voltage stabilizing chip Source connects voltage detecting circuit, and described voltage detecting circuit is connected to main control chip.
- 4. a kind of stepper motor driving circuit simplified according to claim 1, it is characterised in that described H bridges motor drives Dynamic circuit include bridge left arm drive circuit in circuit structure identical, upper bridge right arm drive circuit, lower bridge left arm drive circuit with Lower bridge right arm drive circuit.
- A kind of 5. stepper motor driving circuit simplified according to claim 4, it is characterised in that described lower bridge left arm Drive circuit includes high-voltage MOS pipe and low pressure metal-oxide-semiconductor, and described high-voltage MOS pipe source electrode is connected and connected with the drain electrode of low pressure metal-oxide-semiconductor It is connected to stepper motor, the grid connection high-voltage driving circuit of described high-voltage MOS pipe, the grid connection of described low pressure metal-oxide-semiconductor Low-voltage driving circuit.
- A kind of 6. stepper motor driving circuit simplified according to claim 5, it is characterised in that described high drive Circuit includes multiple triodes, diode, electric capacity, resistance and built.
- A kind of 7. stepper motor driving circuit simplified according to claim 5, it is characterised in that described low-voltage driving Circuit includes multiple triodes, resistance is built.
- A kind of 8. stepper motor driving circuit simplified according to claim 1, it is characterised in that described main control chip Using the single-chip microcomputer with 3 tunnel complementation PWM passages.
- A kind of 9. stepper motor driving circuit simplified according to claim 1, it is characterised in that described external signal Input circuit includes subdivision toggle switch circuit, electric current toggle switch circuit and signal input part, described signal input part and led to Cross signal processing circuit and be connected to main control chip, described subdivision toggle switch circuit, electric current toggle switch circuit connect respectively To main control chip.
- A kind of 10. stepper motor driving circuit simplified according to claim 9, it is characterised in that described signal input Input is included pulse signal, direction signal and enable signal by end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721201021.5U CN207150474U (en) | 2017-09-19 | 2017-09-19 | A kind of stepper motor driving circuit simplified |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721201021.5U CN207150474U (en) | 2017-09-19 | 2017-09-19 | A kind of stepper motor driving circuit simplified |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207150474U true CN207150474U (en) | 2018-03-27 |
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ID=61668168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721201021.5U Active CN207150474U (en) | 2017-09-19 | 2017-09-19 | A kind of stepper motor driving circuit simplified |
Country Status (1)
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| CN (1) | CN207150474U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500712A (en) * | 2019-08-29 | 2019-11-26 | 海信（山东）空调有限公司 | A kind of control circuit, humidifier and air-conditioning |
-
2017
- 2017-09-19 CN CN201721201021.5U patent/CN207150474U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500712A (en) * | 2019-08-29 | 2019-11-26 | 海信（山东）空调有限公司 | A kind of control circuit, humidifier and air-conditioning |
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