CN106253767A - Direct current motor drive circuit - Google Patents
Direct current motor drive circuit Download PDFInfo
- Publication number
- CN106253767A CN106253767A CN201610698783.4A CN201610698783A CN106253767A CN 106253767 A CN106253767 A CN 106253767A CN 201610698783 A CN201610698783 A CN 201610698783A CN 106253767 A CN106253767 A CN 106253767A
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- China
- Prior art keywords
- field effect
- effect transistor
- resistor
- driving chip
- triode
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- Pending
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- 230000005669 field effect Effects 0.000 claims abstract description 85
- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/28—Modifications for introducing a time delay before switching
- H03K17/284—Modifications for introducing a time delay before switching in field effect transistor switches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The invention discloses a direct current motor driving circuit, which comprises an IC driving chip, a first bridge arm and a second bridge arm; the first bridge arm comprises a first resistor, a first field effect transistor, a first triode, a second resistor, a first capacitor and a second field effect transistor; the joint of the first field effect tube and the second field effect tube is connected with a stator coil of the motor; the first field effect transistor is also connected with a third end of the driving chip through a first triode; the second field effect transistor is also connected with a second end of the driving chip; the second bridge arm comprises a third resistor, a third field effect transistor, a second triode, a fourth resistor, a second capacitor and a fourth field effect transistor; the joint of the third field effect tube and the fourth field effect tube is connected with another stator coil of the motor; the third field effect transistor is also connected with the second end of the driving chip through a second triode; the fourth field effect transistor is also connected with a third end of the driving chip; the first end of the driving chip is connected with the first internal working voltage source, and the fourth end of the driving chip is grounded. The invention has simple structure and lower cost.
Description
Technical Field
The invention relates to the field of electronics, in particular to a direct current motor driving circuit.
Background
For a long time, the dc motor has been the best choice for most variable speed motion control and closed loop position servo control systems due to its characteristics of good linearity and excellent control performance. Particularly, with the development of high switching frequency and full-control second-generation power semiconductor devices (GTR, GTO, MOSFET, IGBT, etc.) and the application of pulse width modulation dc speed regulation technology in the control field of computers, dc motors are widely used. Therefore, in order to meet the use requirements of small direct current motors, various semiconductor manufacturers provide a direct current motor control special drive circuit, which not only can drive the normal operation function of the motor, but also can provide a locking protection function.
However, the inventor finds that the drive circuit special for controlling the direct current motor is composed of an MCU or other complex control systems, so that the structure is complex and the cost is high.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a dc motor driving circuit, which has a simple structure and a low cost.
In order to solve the above technical problem, an embodiment of the present invention provides a dc motor driving circuit, where the dc motor driving circuit includes an IC driving chip, and a first bridge arm and a second bridge arm connected in parallel; wherein,
the first bridge arm comprises a first resistor, a first field effect transistor, a first triode, a second resistor, a first capacitor and a second field effect transistor; one end of the first resistor is connected with a first internal working voltage source, and the other end of the first resistor is connected with the grid electrode of the first field effect transistor and the collector electrode of the first triode; the source electrode of the first field effect tube is connected with the first internal working voltage source, and the drain electrode of the first field effect tube is connected with the drain electrode of the second field effect tube and a stator coil of the motor; the base electrode of the first triode is connected with the third end of the driving chip, and the emitting electrode of the first triode is grounded; the source electrode of the second field effect transistor is grounded, and the grid electrode of the second field effect transistor is connected with one end of the second resistor, one end of the first capacitor and the second end of the driving chip; the other end of the second resistor is connected with a second internal working voltage source; the other end of the first capacitor is grounded;
the second bridge arm comprises a third resistor, a third field effect transistor, a second triode, a fourth resistor, a second capacitor and a fourth field effect transistor; one end of the third resistor is connected with the first internal working voltage source, and the other end of the third resistor is connected with the grid electrode of the third field effect transistor and the collector electrode of the second triode; the source electrode of the third field effect tube is connected with the first internal working voltage source, and the drain electrode of the third field effect tube is connected with the drain electrode of the fourth field effect tube and the other stator coil of the motor; the base electrode of the second triode is connected with the second end of the driving chip, and the emitting electrode of the second triode is grounded; the source electrode of the fourth field effect transistor is grounded, and the grid electrode of the fourth field effect transistor is connected with one end of the fourth resistor, one end of the second capacitor and the third end of the driving chip; the other end of the fourth resistor is connected with the second internal working voltage source; the other end of the second capacitor is grounded;
and the first end of the driving chip is connected with the first internal working voltage source, and the fourth end of the driving chip is grounded.
When one of the second end and the third end of the IC driving chip outputs a low-level voltage signal, and the other of the second end and the third end of the IC driving chip outputs a high-level voltage signal, the direct-current motor driving circuit drives the motor to normally work.
When the IC driving chip detects that the motor is stuck, the second end and the third end of the IC driving chip output low-level voltage signals, and the direct-current motor driving circuit locks and protects the motor.
The types of the first triode and the second triode are BT 2222.
The models of the first field effect transistor and the third field effect transistor are RSD130P 10; the models of the second field effect transistor and the fourth field effect transistor are RSD175N10.
The embodiment of the invention has the following beneficial effects:
1. the direct current motor driving circuit is an H-bridge driving circuit formed by an IC driving chip, a first bridge arm and a second bridge arm, and an MCU and other complex control systems are omitted, so that the direct current motor driving circuit is simple in structure and reduces cost;
2. because the direct current motor driving circuit is connected with the second resistor and the first capacitor at the second field effect tube and is connected with the fourth resistor and the second capacitor at the fourth field effect tube, the starting time of the second field effect tube or the fourth field effect tube is prolonged, and the phenomenon that the first field effect tube and the second field effect tube (or the third field effect tube and the fourth field effect tube) are simultaneously conducted to generate large current to cause damage before the second field effect tube or the fourth field effect tube is started can be avoided, and the stable work of the inverter is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a schematic diagram of a connection structure of a dc motor driving circuit according to an embodiment of the present invention;
fig. 2 is an application scenario diagram of the dc motor driving circuit according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, in an embodiment of the present invention, a dc motor driving circuit is provided, which includes an IC driving chip 1, and a first bridge arm 2 and a second bridge arm 3 connected in parallel; wherein,
the first bridge arm 2 comprises a first resistor 21, a first field effect transistor 22, a first triode 23, a second resistor 24, a first capacitor 25 and a second field effect transistor 26; one end of the first resistor 21 is connected to the first internal operating voltage source V1, and the other end is connected to both the gate G of the first fet 22 and the collector C of the first triode 23; the source S of the first field effect transistor 22 is connected with a first internal working voltage source V1, and the drain D is connected with the drain D of the second field effect transistor 26 and a stator coil L1 of the motor; the base B of the first triode 23 is connected with the third end a3 of the driving chip 1, and the emitter E is grounded; the source S of the second fet 26 is grounded, and the gate G is connected to one end of the second resistor 24, one end of the first capacitor 25, and the second end a2 of the driver chip 1; the other end of the second resistor 24 is connected with a second internal working voltage source V2; the other end of the first capacitor 25 is grounded;
the second bridge arm 3 comprises a third resistor 31, a third field effect transistor 32, a second triode 33, a fourth resistor 34, a second capacitor 35 and a fourth field effect transistor 36; one end of the third resistor 31 is connected to the first internal operating voltage source V1, and the other end is connected to both the gate G of the third fet 32 and the collector C of the second transistor 33; the source S of the third field effect transistor 32 is connected with a first internal working voltage source V1, and the drain D is connected with the drain D of the fourth field effect transistor 36 and another stator coil L2 of the motor; the base B of the second triode 33 is connected with the second end a2 of the driving chip 1, and the emitter E is grounded; the source S of the fourth field effect transistor 36 is grounded, and the gate G is connected to one end of the fourth resistor 34, one end of the second capacitor 35, and the third end a3 of the driving chip 1; the other end of the fourth resistor 34 is connected with a second internal working voltage source V2; the other end of the second capacitor 35 is grounded;
the first terminal a1 of the driving chip 1 is connected to the first internal operating voltage source V1, and the fourth terminal is grounded.
In one embodiment, the driving chip 1 is a self-designed hall element, and the model of the driving chip is SNOW 48; the first field effect transistor 22 and the third field effect transistor 32 are both RSD130P 10; the second field effect transistor 26 and the fourth field effect transistor 36 are both RSD175N 10; the first transistor 23 and the second transistor 33 are both BT 2222.
In the embodiment of the present invention, when one of the second terminal a2 and the third terminal a3 of the IC driving chip 1 outputs a low level voltage signal and the other thereof outputs a high level voltage signal, the driving circuit of the dc motor can drive the motor to work normally. When the IC driving chip 1 detects that the motor is dead, the second end a2 and the third end a3 of the IC driving chip 1 both output low level voltage signals, so as to realize the motor locking protection of the dc motor driving circuit.
As can be seen from the dc motor driving circuit in the embodiment of the present invention, since the turn-off time of the first fet 22 (or the third fet 32) is determined by the first resistor 21 (or the third resistor 31), and the turn-on time of the second fet 26 (or the fourth fet 36) is determined by the second resistor 24, the first capacitor 25, and the junction capacitor of the second fet 26 (or the junction capacitor of the fourth resistor 34, the second capacitor 35, and the fourth fet 36), it is obvious that the turn-on time of the second fet 26 (or the fourth fet 36) is longer, so that the first fet 22 (or the third fet 32) is already turned off when the second fet 26 (or the fourth fet 36) is turned on.
It should be noted that the junction capacitance of the first fet 22, the second fet 26, the third fet 32, and the fourth fet 36 is generally about 1nF, and the conventional driving circuit does not have the first capacitor 25 and the second capacitor 35, so the turn-on process time is short, and a large current is easily generated and damaged.
As shown in fig. 2, an application scenario of the dc motor driving circuit in the embodiment of the present invention is further described:
in the figure, U1 is an IC driver chip 1, and pins 1 to 4 correspond to the first to fourth terminals of the IC driver chip 1, respectively; TM1 is the first fet 22, TM3 is the second fet 26, TM2 is the third fet 32, and TM4 is the fourth fet 36; q1 is the first triode 23, Q2 is the second triode 33; r2 is a first resistor 21, R12 is a second resistor, R3 is a third resistor 31, and R15 is a fourth resistor; c3 is the first capacitor 25, C4 is the second capacitor 35; v + is a first internal operating voltage source V1, and +12V is a second internal operating voltage source V2; l1 and L2 are two stator coils of the motor.
U1 is hall element, and pin 1 is the VCC pin of supplying power, and 2, 3 feet are drive pin, and 4 feet are GND, and its response rotor magnetic field provides rotor position information, and 2, 3 feet N1, N2 output are the low level during the locking protection, and drive current only needs 50mA, has reduced IC design cost.
The embodiment of the invention has the following beneficial effects:
1. the direct current motor driving circuit is an H-bridge driving circuit formed by an IC driving chip, a first bridge arm and a second bridge arm, and an MCU and other complex control systems are omitted, so that the direct current motor driving circuit is simple in structure and reduces cost;
2. because the direct current motor driving circuit is connected with the second resistor and the first capacitor at the second field effect tube and is connected with the fourth resistor and the second capacitor at the fourth field effect tube, the starting time of the second field effect tube or the fourth field effect tube is prolonged, and the phenomenon that the first field effect tube and the second field effect tube (or the third field effect tube and the fourth field effect tube) are simultaneously conducted to generate large current to cause damage before the second field effect tube or the fourth field effect tube is started can be avoided, and the stable work of the inverter is ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A direct current motor driving circuit is characterized by comprising an IC driving chip, a first bridge arm and a second bridge arm which are connected in parallel; wherein,
the first bridge arm comprises a first resistor, a first field effect transistor, a first triode, a second resistor, a first capacitor and a second field effect transistor; one end of the first resistor is connected with a first internal working voltage source, and the other end of the first resistor is connected with the grid electrode of the first field effect transistor and the collector electrode of the first triode; the source electrode of the first field effect tube is connected with the first internal working voltage source, and the drain electrode of the first field effect tube is connected with the drain electrode of the second field effect tube and a stator coil of the motor; the base electrode of the first triode is connected with the third end of the driving chip, and the emitting electrode of the first triode is grounded; the source electrode of the second field effect transistor is grounded, and the grid electrode of the second field effect transistor is connected with one end of the second resistor, one end of the first capacitor and the second end of the driving chip; the other end of the second resistor is connected with a second internal working voltage source; the other end of the first capacitor is grounded;
the second bridge arm comprises a third resistor, a third field effect transistor, a second triode, a fourth resistor, a second capacitor and a fourth field effect transistor; one end of the third resistor is connected with the first internal working voltage source, and the other end of the third resistor is connected with the grid electrode of the third field effect transistor and the collector electrode of the second triode; the source electrode of the third field effect tube is connected with the first internal working voltage source, and the drain electrode of the third field effect tube is connected with the drain electrode of the fourth field effect tube and the other stator coil of the motor; the base electrode of the second triode is connected with the second end of the driving chip, and the emitting electrode of the second triode is grounded; the source electrode of the fourth field effect transistor is grounded, and the grid electrode of the fourth field effect transistor is connected with one end of the fourth resistor, one end of the second capacitor and the third end of the driving chip; the other end of the fourth resistor is connected with the second internal working voltage source; the other end of the second capacitor is grounded;
and the first end of the driving chip is connected with the first internal working voltage source, and the fourth end of the driving chip is grounded.
2. The direct current motor driving circuit according to claim 1, wherein when one of the second terminal and the third terminal of the IC driving chip outputs a low level voltage signal and the other thereof outputs a high level voltage signal, the direct current motor driving circuit drives the motor to normally operate.
3. The dc motor driving circuit according to claim 2, wherein when the IC driving chip detects that the motor is stuck, the second terminal and the third terminal of the IC driving chip both output low level voltage signals, so as to realize the locking protection of the dc motor driving circuit on the motor.
4. The direct current motor driving circuit according to any one of claims 1 to 3, wherein the first transistor and the second transistor are each of a type BT 2222.
5. The direct current motor drive circuit according to any one of claims 1 to 3, wherein the first field effect transistor and the third field effect transistor are each of a type RSD130P 10; the models of the second field effect transistor and the fourth field effect transistor are RSD175N10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698783.4A CN106253767A (en) | 2016-08-22 | 2016-08-22 | Direct current motor drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698783.4A CN106253767A (en) | 2016-08-22 | 2016-08-22 | Direct current motor drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106253767A true CN106253767A (en) | 2016-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610698783.4A Pending CN106253767A (en) | 2016-08-22 | 2016-08-22 | Direct current motor drive circuit |
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| Country | Link |
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| CN (1) | CN106253767A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599558A (en) * | 2018-05-17 | 2018-09-28 | 合肥威迪变色玻璃有限公司 | Control circuit based on low pressure H bridges |
| CN109442569A (en) * | 2018-12-19 | 2019-03-08 | 天津宏达瑞信科技有限公司 | A kind of heating system thermal balance intelligence control system |
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| CN102005990A (en) * | 2010-11-12 | 2011-04-06 | 中国兵器工业集团第二一四研究所苏州研发中心 | H-bridge driving control circuit of motor |
| CN103560728A (en) * | 2013-11-13 | 2014-02-05 | 中国兵器工业集团第二一四研究所苏州研发中心 | Motor drive circuit with dead band time delay |
| CN203708158U (en) * | 2013-12-30 | 2014-07-09 | 湖南信息科学职业学院 | Novel H bridge circuit based on field effect transistor |
| CN204886763U (en) * | 2015-06-16 | 2015-12-16 | 昆明理工大学 | Brushless DC motor drives real -time embedded control circuit |
| CN205986687U (en) * | 2016-08-22 | 2017-02-22 | 深圳市永亿豪电子有限公司 | Direct current motor drive circuit |
-
2016
- 2016-08-22 CN CN201610698783.4A patent/CN106253767A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005990A (en) * | 2010-11-12 | 2011-04-06 | 中国兵器工业集团第二一四研究所苏州研发中心 | H-bridge driving control circuit of motor |
| CN103560728A (en) * | 2013-11-13 | 2014-02-05 | 中国兵器工业集团第二一四研究所苏州研发中心 | Motor drive circuit with dead band time delay |
| CN203708158U (en) * | 2013-12-30 | 2014-07-09 | 湖南信息科学职业学院 | Novel H bridge circuit based on field effect transistor |
| CN204886763U (en) * | 2015-06-16 | 2015-12-16 | 昆明理工大学 | Brushless DC motor drives real -time embedded control circuit |
| CN205986687U (en) * | 2016-08-22 | 2017-02-22 | 深圳市永亿豪电子有限公司 | Direct current motor drive circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599558A (en) * | 2018-05-17 | 2018-09-28 | 合肥威迪变色玻璃有限公司 | Control circuit based on low pressure H bridges |
| CN109442569A (en) * | 2018-12-19 | 2019-03-08 | 天津宏达瑞信科技有限公司 | A kind of heating system thermal balance intelligence control system |
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Application publication date: 20161221 |
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