CN214674959U - H-bridge bidirectional motor driving circuit based on four triodes - Google Patents
H-bridge bidirectional motor driving circuit based on four triodes Download PDFInfo
- Publication number
- CN214674959U CN214674959U CN202120700168.9U CN202120700168U CN214674959U CN 214674959 U CN214674959 U CN 214674959U CN 202120700168 U CN202120700168 U CN 202120700168U CN 214674959 U CN214674959 U CN 214674959U
- Authority
- CN
- China
- Prior art keywords
- resistor
- mcu
- signal input
- input end
- control signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Direct Current Motors (AREA)
Abstract
The utility model discloses a H bridge two-way motor drive circuit based on four triodes, including two accident guarantee circuits that two control circuit and two triodes that H bridge type motor drive circuit, two triode that 4 MOS pipe is constituteed are constituteed. The utility model only uses two triodes to form two control circuits, and combines a small amount of resistance to realize the bidirectional rotation and speed regulation of the motor, without using a large number of chips, and saves chip resources while realizing the same function; the logic interlocking between the control signals M + and M-is realized by arranging the accident guarantee circuit with the fourth triode, the control signals M + and M-cannot be high-level simultaneously, and the short circuit burnout of 2 MOS (metal oxide semiconductor) tubes of the same bridge arm is avoided.
Description
Technical Field
The utility model relates to a motor drive circuit, especially a H bridge two-way motor drive circuit based on four triodes.
Background
In practical application, the motor needs to be capable of performing bidirectional rotation and realizing bidirectional rotation conversion, and generally, the control of the bidirectional movement of the motor is realized by adopting an H-bridge type motor driving circuit.
The typical principle of the H-bridge motor driving circuit is shown in fig. 1, and as the name suggests, the shape of the circuit is similar to the letter H, and the bidirectional rotation of the motor can be realized only by conducting the diagonal circuit. Generally, because the MOS transistor has the advantages of high input impedance, low noise, good thermal stability, and the like, the MOS transistor is usually used in the H-bridge motor driving circuit instead of the triode, and the driving control principle is the same.
However, the current H-bridge motor driving circuit has the following problems: the four MOS tubes need a plurality of control chips to respectively control the on-off of various electric devices, and the consumed chip resources and the number of peripheral components are large.
Therefore, the conventional H-bridge motor driving circuit has a problem of consuming a large number of circuit components.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a H bridge two-way motor drive circuit based on four triodes. The utility model discloses a two triodes and a small amount of resistance just can realize the driving of two-way motor, have the advantage of saving chip resource.
The technical scheme of the utility model: the utility model provides a H bridge two-way motor drive circuit based on four triodes, includes the H bridge type motor drive circuit who constitutes by these 4 MOS pipes of first top tube, first low tube, second top tube and second low tube, its characterized in that: the grid of the first upper tube is connected with a first control circuit in series, and the grid of the second upper tube is connected with a second control circuit in series;
the first control circuit comprises a first resistor, a second resistor, a first triode and a twelfth resistor which are sequentially connected in series; the grid electrode of the first upper tube is connected between the second resistor and the first resistor;
the second control circuit comprises a third resistor, a fourth resistor, a second triode and a thirteenth resistor which are sequentially connected in series; the grid electrode of the second upper tube is connected between the fourth resistor and the third resistor;
the twelfth resistor of the first control circuit is connected with the first control signal input end of the second MCU, and the thirteenth resistor of the second control circuit is connected with the first control signal input end of the first MCU;
the grid of the first lower tube is sequentially connected with a fifth resistor and a first MCU second control signal input end in series; the grid of the second lower tube is sequentially connected with a seventh resistor and a second control signal input end of the second MCU in series;
the first MCU first control signal input end and the second MCU first control signal input end are A groups, and the first MCU second control signal input end and the second MCU second control signal input end are B groups; one of the group A and the group B is a PWM port, and the other group is an IO port.
In the H-bridge bidirectional motor driving circuit based on the four triodes, a positive temperature coefficient thermistor is connected in series with a driving power supply end of the H-bridge motor driving circuit.
In the H-bridge bidirectional motor driving circuit based on four triodes, the first control circuit and the second control circuit are both connected with a driving power supply end.
In the H-bridge bidirectional motor driving circuit based on four triodes, the first lower tube and the second lower tube are connected to ground; a current acquisition resistor is connected between the connecting point of the first lower tube and the second lower tube and the ground in series; a current acquisition circuit is connected between the connecting points of the first lower tube and the second lower tube and the current acquisition resistor in parallel; the current acquisition circuit comprises an eleventh resistor, a first capacitor and a ground which are sequentially connected in series; and an AD acquisition port is connected between the eleventh resistor and the first capacitor.
In the H-bridge bidirectional motor driving circuit based on the four triodes, a first accident guarantee circuit is connected in parallel between the fifth resistor and the first MCU second control signal input end, and a second accident guarantee circuit is connected in parallel between the seventh resistor and the second MCU second control signal input end.
In the H-bridge bidirectional motor driving circuit based on four triodes, the first event guarantee circuit comprises a third triode and a ninth resistor which are sequentially connected in series; the other end of the ninth resistor is connected with a first control signal input end of the second MCU;
the second accident protection circuit comprises a fourth triode and a tenth resistor which are sequentially connected in series; the other end of the tenth resistor is connected with the first control signal input end of the first MCU.
Compared with the prior art, the utility model has the advantages that the upper MOS tube (the first upper tube and the second upper tube) is connected with the control circuit (the first control circuit and the second control circuit), and different high and low levels are input through the two signal input ends to control the on-off of the triode so as to change the on-off of the H-bridge type motor driving circuit and drive the motor to rotate forward and backward; the first MCU second control signal input end and the second MCU second control signal input end (or the first MCU first control signal input end and the second MCU first control signal input end) are PWM ports, so that the speed regulation of the motor can be realized; the utility model discloses only use two triodes to constitute two control circuit, combine a small amount of resistance just to realize the two-way rotation and the speed governing of motor, need not to use a large amount of chips and peripheral components and parts, still practiced thrift circuit components and parts when realizing the same function.
Therefore, the utility model discloses a two-way motor drive just can be realized to two triodes and a small amount of resistance, has the advantage of saving chip resource.
Further, the utility model discloses a PTC of establishing ties in H bridge upper end appears the current abnormal conditions such as stifled commentaries on classics when the motor in the operation, can in time generate heat, plays the effect of protection H bridge arm MOS pipe.
Through setting up the current acquisition circuit, the voltage at current acquisition resistance both ends is gathered by MCU, and when the motor leads to the electric current too big because the locked-rotor short circuit, can in time close the drive signal of signal input end, and the MOS pipe of H bridge arm is damaged to the too big damage of restriction electric current.
The voltage of the I-AD acquisition point is acquired through the AD acquisition port of the MCU, so that the running condition of the motor can be judged.
When 4 MOS pipe control signals appear unusually, the H bridge circuit can appear switching on the condition that the short circuit burns out simultaneously with 2 MOS pipes of bridge arm from top to bottom with one side, the utility model discloses a set up the interlocking of the drive signal of MOS pipe about first accident guarantee circuit and the realization of second accident guarantee circuit same bridge arm, M1+ and M2- (or M2+ and M1-) can't be the high level simultaneously, have avoided 2 MOS pipes of same bridge arm short circuit to burn out.
The utility model discloses a two way PWM mouths and two way IO mouths are controlled, just can realize opening and turn-off of every bridge arm pipe of H bridge, and control is nimble.
Will the utility model discloses a positive temperature coefficient thermistor and current acquisition resistance select appropriate parameter or directly cancel the short circuit, can obtain one kind based on the utility model discloses a H bridge direct current alternating current circuit can use the occasion that only direct current power supply nevertheless need drive alternating current load, for example have low pressure alternating current air pump such as 12VAC, 24VAC on the market, the utility model discloses an applied place is wider.
Drawings
Fig. 1 is a schematic diagram of the H-bridge motor drive circuit.
Fig. 2 is a schematic diagram of the circuit structure of the present invention.
The labels in the figures are: p1-a first upper tube, P2-a second upper tube, N1-a first lower tube, N2-a second lower tube, Q1-a first triode, Q2-a second triode, Q3-a third triode, Q4-a fourth triode, M1+ -a first control signal input end of MCU No. I, M2+ -a first control signal input end of MCU No. II, M1-a second control signal input end of MCU No. I, M2-a second control signal input end of MCU No. II, VCC-a driving power supply end, a PTC-coefficient thermistor, R01-a current collecting resistor, R1-a first resistor, R2-a second resistor, R3-a third resistor, R4-a fourth resistor, R5-a fifth resistor, R7-a seventh resistor, R9-a ninth resistor, R10-a tenth resistor, R11-an eleventh resistor, r12-twelfth resistor, R13-thirteenth resistor and C1-first capacitor.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Examples are given. An H-bridge bidirectional motor driving circuit based on four triodes is formed as shown in a figure 1-2, and comprises an H-bridge type motor driving circuit consisting of 4 MOS transistors, namely a first upper tube P1, a first lower tube N1, a second upper tube P2 and a second lower tube N2; the grid of the first upper tube P1 is connected in series with a first control circuit, and the grid of the second upper tube P2 is connected in series with a second control circuit;
the first control circuit comprises a first resistor R1, a second resistor R2, a first triode Q1 and a twelfth resistor R12 which are sequentially connected in series; the grid of the first upper tube P1 is connected between the second resistor R2 and the first resistor R1;
the second control circuit comprises a third resistor R3, a fourth resistor R4, a second triode Q2 and a thirteenth resistor R13 which are sequentially connected in series; the gate of the second upper transistor P2 is connected between the fourth resistor R4 and the third resistor R3;
a twelfth resistor R12 of the first control circuit is connected with a first control signal input end M2+ of the second MCU, and a thirteenth resistor R13 of the second control circuit is connected with a first control signal input end M1 +;
the grid of the first lower tube N1 is sequentially connected with a fifth resistor R5 and a first MCU second control signal input end M1-; the grid of the second lower tube N2 is sequentially connected with a seventh resistor R7 and a second control signal input end M2-of the second MCU in series;
the first MCU first control signal input end M1+ and the second MCU first control signal input end M2+ are IO ports; and the first MCU second control signal input end M1-and the second MCU second control signal input end M2-are both PWM ports.
And a positive temperature coefficient thermistor (PTC) is connected in series with a driving power supply end VCC of the H-bridge type motor driving circuit.
The first control circuit and the second control circuit are both connected with a driving power supply end VCC.
The first lower pipe N1 and the second lower pipe N2 are commonly connected to ground; a current collecting resistor R01 is connected in series between the connecting point of the first lower tube N1 and the second lower tube N2 and the ground; a current collecting circuit is connected in parallel between the connecting point of the first lower tube N1 and the second lower tube N2 and the current collecting resistor R01; the current acquisition circuit comprises an eleventh resistor R11, a first capacitor C1 and ground which are sequentially connected in series; an AD acquisition port is connected between the eleventh resistor R11 and the first capacitor C1.
A first accident guarantee circuit is connected in parallel between the fifth resistor R5 and the first MCU second control signal input end M1-, and a second accident guarantee circuit is connected in parallel between the seventh resistor R7 and the second MCU second control signal input end M2-.
The first accident guarantee circuit comprises a third triode Q3 and a ninth resistor R9 which are sequentially connected in series; the other end of the ninth resistor R9 is connected with a first control signal input end M2+ of the second MCU;
the second accident protection circuit comprises a fourth triode Q4 and a tenth resistor R10 which are sequentially connected in series; the other end of the tenth resistor R10 is connected with a first control signal input end M1+ of the first MCU.
The other conventional components and the corresponding connection modes are connected with the circuit structure diagram shown in fig. 2.
The working principle is as follows: the circuit according to the circuit diagram of fig. 1-2 operates as follows:
during alternating current: when the first MCU first control signal input end M1+ and the first MCU second control signal input end M1-are at a high level, the second MCU first control signal input end M2+ and the second MCU second control signal input end M2-are at a low level, the second triode Q2, the fourth triode Q4, the second upper tube P2 and the first lower tube N1 are switched on, and the first triode Q1, the third triode Q3, the first upper tube P1 and the second lower tube N2 are switched off; the current forms a loop from a driving power supply terminal VCC, a positive temperature coefficient thermistor PTC, a second upper tube P2, a motor, a first lower tube N1 and a current collecting resistor R01, and the motor rotates towards one direction;
the first control signal input end M2+ of the second MCU and the second control signal input end M2-of the second MCU are high level, the first control signal input end M1+ of the first MCU and the second control signal input end M1-of the first MCU are low level, the first triode Q1, the third triode Q3, the first upper tube P1 and the second lower tube N2 are conducted, and the second triode Q2, the fourth triode Q4, the second upper tube P2 and the first lower tube N1 are turned off; the current forms a loop from a driving power supply terminal VCC, a positive temperature coefficient thermistor PTC, a first upper tube P1, a motor, a second lower tube N2 and a current collecting resistor R01, and the motor rotates towards the other direction;
in direct current: in a time period T, when the first MCU first control signal input end M1+ and the first MCU second control signal input end M1-are at a high level, the second MCU first control signal input end M2+ and the second MCU second control signal input end M2-are at a low level; in the holding time T1, the second triode Q2, the fourth triode Q4, the second upper tube P2 and the first lower tube N1 are turned on, the first triode Q1, the third triode Q3, the first upper tube P1 and the second lower tube N2 are turned off, and the AC1 is high voltage relative to the AC 2; the motor rotates towards one direction;
the first control signal input end M2+ of the second MCU and the second control signal input end M2-of the second MCU are at high level, and the first control signal input end M1+ of the first MCU and the second control signal input end M1-of the first MCU are at low level; when the time is kept for T1, the first triode Q1, the third triode Q3, the first upper tube P1 and the second lower tube N2 are conducted, the second triode Q2, the fourth triode Q4, the second upper tube P2 and the first lower tube N1 are turned off, and the AC1 is low voltage relative to the AC 2; the motor rotates towards the other direction;
2T 1 < T, 1/T is the frequency of the alternating current after conversion, and the power of the alternating current after conversion can be controlled by the size of T1.
The accident guarantee principle is as follows: when the first control signal input end M1+ of the first MCU is at a high level, the second transistor Q2 is turned on, the second upper tube P2 is turned on, the fourth transistor Q4 is turned on, the second control signal input end M2-of the second MCU is interlocked to a low level, and the second lower tube N2 is turned off, thereby avoiding the situation that the same side bridge arms (the second upper tube P2 and the second lower tube N2) are turned on at the same time and the switch tubes are burned out.
When the first control signal input end M2+ of the second MCU is at a high level, the first triode Q1 is switched on, the first upper tube P1 is switched on, the third triode Q3 is switched on, the second control signal input end M1-of the first MCU is interlocked to be at a low level, and the first lower tube N1 is switched off, so that the situation that the switching tubes are burnt out due to the fact that the bridge arms at the same side (the first upper tube P1 and the first lower tube N1) are switched on simultaneously is avoided.
When the first MCU first control signal input end M1+, the first MCU second control signal input end M1-, the second MCU first control signal input end M2+ and the second MCU second control signal input end M2-are combined in a way other than the above, a loop cannot be formed.
Claims (6)
1. The utility model provides a H bridge two-way motor drive circuit based on four triode, includes the H bridge type motor drive circuit who constitutes by these 4 MOS pipes of first upper tube (P1), first low tube (N1), second upper tube (P2) and second low tube (N2), its characterized in that: the grid of the first upper tube (P1) is connected with a first control circuit in series, and the grid of the second upper tube (P2) is connected with a second control circuit in series;
the first control circuit comprises a first resistor (R1), a second resistor (R2), a first triode (Q1) and a twelfth resistor (R12) which are sequentially connected in series; the grid of the first upper tube (P1) is connected between the second resistor (R2) and the first resistor (R1);
the second control circuit comprises a third resistor (R3), a fourth resistor (R4), a second triode (Q2) and a thirteenth resistor (R13) which are sequentially connected in series; the grid of the second upper tube (P2) is connected between a fourth resistor (R4) and a third resistor (R3);
a twelfth resistor (R12) of the first control circuit is connected with a first control signal input end (M2+) of the second MCU, and a thirteenth resistor (R13) of the second control circuit is connected with a first control signal input end (M1+) of the first MCU;
the grid of the first lower tube (N1) is sequentially connected with a fifth resistor (R5) and a first MCU second control signal input end (M1-); the grid of the second lower tube (N2) is sequentially connected with a seventh resistor (R7) and a second control signal input end (M2-) of the second MCU in series;
the first MCU first control signal input end (M1+) and the second MCU first control signal input end (M2+) are a group A, and the first MCU second control signal input end (M1-) and the second MCU second control signal input end (M2-) are a group B; one of the group A and the group B is a PWM port, and the other group is an IO port.
2. The H-bridge bidirectional motor driving circuit based on four triodes of claim 1, characterized in that: and a positive temperature coefficient thermistor (PTC) is connected in series with a driving power supply end (VCC) of the H-bridge type motor driving circuit.
3. The H-bridge bidirectional motor driving circuit based on four triodes of claim 1, characterized in that: the first control circuit and the second control circuit are both connected with a driving power supply end (VCC).
4. The H-bridge bidirectional motor driving circuit based on four triodes of claim 1, characterized in that: the first lower tube (N1) and the second lower tube (N2) are commonly connected to ground; a current collecting resistor (R01) is connected in series between the connecting point of the first lower tube (N1) and the second lower tube (N2) and the ground; a current acquisition circuit is connected between the connecting point of the first lower tube (N1) and the second lower tube (N2) and a current acquisition resistor (R01) in parallel; the current acquisition circuit comprises an eleventh resistor (R11), a first capacitor (C1) and ground which are sequentially connected in series; an AD acquisition port is connected between the eleventh resistor (R11) and the first capacitor (C1).
5. The H-bridge bidirectional motor driving circuit based on four triodes of claim 1, characterized in that: a first accident guarantee circuit is connected in parallel between the fifth resistor (R5) and the first MCU second control signal input end (M1-), and a second accident guarantee circuit is connected in parallel between the seventh resistor (R7) and the second MCU second control signal input end (M2-).
6. The H-bridge bidirectional motor driving circuit based on four triodes of claim 5, wherein: the first accident guarantee circuit comprises a third triode (Q3) and a ninth resistor (R9) which are sequentially connected in series; the other end of the ninth resistor (R9) is connected with a first control signal input end (M2+) of the second MCU;
the second accident protection circuit comprises a fourth triode (Q4) and a tenth resistor (R10) which are sequentially connected in series; the other end of the tenth resistor (R10) is connected with the first control signal input end (M1+) of the first MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120700168.9U CN214674959U (en) | 2021-04-07 | 2021-04-07 | H-bridge bidirectional motor driving circuit based on four triodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120700168.9U CN214674959U (en) | 2021-04-07 | 2021-04-07 | H-bridge bidirectional motor driving circuit based on four triodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214674959U true CN214674959U (en) | 2021-11-09 |
Family
ID=78459745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120700168.9U Active CN214674959U (en) | 2021-04-07 | 2021-04-07 | H-bridge bidirectional motor driving circuit based on four triodes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214674959U (en) |
-
2021
- 2021-04-07 CN CN202120700168.9U patent/CN214674959U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103050940B (en) | A kind of thermal-shutdown circuit based on subthreshold value metal-oxide-semiconductor | |
| CN204003548U (en) | A kind of fan control circuitry of temperature regulate speed | |
| CN214670154U (en) | H-bridge bidirectional motor driving circuit based on three triodes | |
| CN202404468U (en) | Drying and dehydrating humiture self-control instrument | |
| CN214674959U (en) | H-bridge bidirectional motor driving circuit based on four triodes | |
| CN109412133A (en) | A kind of circuit for preventing power supply and ground reversal connection from burning based on buzzer | |
| CN109104074B (en) | Switching Power Supply frequency conversion control circuit and its design method applied to new-energy automobile | |
| CN100498627C (en) | Method for controlling speed regulation of cooling fan of electromagnetic oven | |
| CN103023004A (en) | Surge suppression circuit | |
| CN208172639U (en) | A kind of Constant-power drive circuit | |
| CN202926683U (en) | Power supply temperature sampling and fan controlling circuit and power supply device | |
| CN209881682U (en) | Bidirectional motor control loop | |
| CN204615626U (en) | Intelligent power module circuit and air conditioner | |
| CN201004608Y (en) | A full wave resonance drive power supply circuit | |
| CN209201040U (en) | A kind of switch driving circuit, controller and electronic equipment | |
| CN206349807U (en) | A kind of new A C/DC automatic switching control circuits | |
| CN207399553U (en) | It is raised with thermistor PTC with temperature and promotes electric current to stable circuit | |
| CN205195561U (en) | Voltage stabilizing circuit with short -circuit protection function | |
| CN206506453U (en) | A kind of active rectification control circuit and power-supply device | |
| CN104821705A (en) | Intelligent power module circuit and air-conditioner | |
| CN201087795Y (en) | Speed control device of electromagnetic stove cooling fan | |
| CN2404267Y (en) | Automatic regulating speed driving electric circuit for fan | |
| CN221150948U (en) | Over-temperature protection control circuit | |
| CN220915265U (en) | Push-pull circuit driven by low voltage | |
| CN219999352U (en) | Driving circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |