CN206524791U - A kind of Brushless DC Motor Drive Circuit and device - Google Patents
A kind of Brushless DC Motor Drive Circuit and device Download PDFInfo
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- CN206524791U CN206524791U CN201720133733.1U CN201720133733U CN206524791U CN 206524791 U CN206524791 U CN 206524791U CN 201720133733 U CN201720133733 U CN 201720133733U CN 206524791 U CN206524791 U CN 206524791U
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Abstract
The utility model is related to motor-drive technique field, and there is provided a kind of Brushless DC Motor Drive Circuit and device.Brushless DC Motor Drive Circuit is connected with master controller, power supply input circuit and DC brushless motor, including：Predrive module, motor drive module, overcurrent protection module and current sample module；By controlling predrive module drive motor drive module and then driving DC brushless motor, current sample module carries out current sample and output current sampled signal to motor drive module to overcurrent protection module；When motor drive module because DC brushless motor breaks down there is excessively stream when, overcurrent protection module according to current sampling signal output shut-off control signal make predrive module controlled motor drive module stop driving DC brushless motor work.So as to realize while powerful DC brushless motor is driven possess failure protection function.
Description
Technical field
The utility model belongs to motor-drive technique field, more particularly to a kind of Brushless DC Motor Drive Circuit and dress
Put.
Background technology
DC brushless motor is a kind of New-type electric machine grown up on the basis of brush direct current motor, and it overcomes biography
Unite direct current generator mechanical commutator and a series of limitations for bringing of brush, possess that electric machine structure is simple, reliable, maintenance side
Just the advantages of.DC brushless motor is widely used in computer peripheral, medicine equipment, instrument and meter, household electrical appliances, industry automatically
The fields such as change.With the development of automated control technology and Power Electronic Technique, requirement more and more higher of the people to equipment, direct current
Brushless electric machine is intended to bigger moment of torsion and Geng Gao rotating speed.Increase moment of torsion and improve rotating speed inevitable requirement DC brushless motor
Drive circuit can provide bigger power, and the drive circuit is also required to possess more failure protection functions to ensure simultaneously
The safety and reliability of motor work.However, existing drive circuit can not expire in face of powerful DC brushless motor
Sufficient requirements above, so, prior art presence can not realize high-power driving to DC brushless motor and possess error protection work(
The problem of energy.
Utility model content
The purpose of this utility model is to provide a kind of Brushless DC Motor Drive Circuit and device, it is intended to solve existing skill
There is the problem of high-power driving can not be realized to DC brushless motor and possesses failure protection function in art.
The utility model provide a kind of Brushless DC Motor Drive Circuit, with master controller, power supply input circuit and
DC brushless motor is connected, and DC brushless motor described in the main controller controls works, and the power supply input circuit is described
Brushless DC Motor Drive Circuit is powered；
The Brushless DC Motor Drive Circuit includes：Predrive module, motor drive module, overcurrent protection module and
Current sample module；
The first input end of the predrive module is connected with the master controller, the second input of the predrive module
End is connected with the output end of the overcurrent protection module, and the output end of the predrive module is defeated with the motor drive module
Enter end connection, the motor drive module is connected with the power supply input circuit, the first output end of the motor drive module
It is connected with the input of the DC brushless motor, the second output end of the motor drive module and the current sample module
The connection of the second input, the first input end of the current sample module is connected with the output end of the predrive module, institute
The output end for stating current sample module is connected with the input of the overcurrent protection module；
The predrive module controls the motor drive module to drive the direct current after electric motor starting signal is received
Brushless electric machine starting；The current sample module carries out current sample and output current sampled signal to the motor drive module
To the overcurrent protection module；When there is excessively stream because breaking down the DC brushless motor in the motor drive module,
The overcurrent protection module is according to current sampling signal output shut-off control signal makes the predrive module control
Motor drive module stops the driving DC brushless motor work.
The utility model also provides a kind of DC brushless motor driving device, including master controller and power supply input circuit,
The DC brushless motor driving device also includes above-mentioned Brushless DC Motor Drive Circuit.
The utility model provide Brushless DC Motor Drive Circuit by set predrive module, motor drive module,
Current sample module and overcurrent protection module, by control predrive module drive motor drive module so that drive direct current without
Brush motor, and the countless motors of direct current break down there is excessively stream when, realize overcurrent protection function, big work(driven so as to realize
Possesses failure protection function while the DC brushless motor of rate.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing used required in description is briefly described, it should be apparent that, drawings in the following description are of the present utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation for the Brushless DC Motor Drive Circuit that the utility model embodiment is provided；
Fig. 2 is the electrical block diagram for the Brushless DC Motor Drive Circuit that the utility model embodiment is provided.
Embodiment
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 to explain
The utility model, is not used to limit the utility model.
It should be noted that term " comprising " in specification and claims of the present utility model and they are any
Deformation, it is intended that covering is non-exclusive to be included.System, product or equipment for example comprising a series of units are not limited to
The unit listed, but alternatively also including the unit do not listed, or alternatively also include solid for these products or equipment
The other units having.In addition, term " first ", " second " and " the 3rd " etc. is to be used to distinguish different objects, not for description
Particular order.
The utility model embodiment exists to solve prior art and can not realize high-power driving to DC brushless motor
And there is provided a kind of Brushless DC Motor Drive Circuit and device the problem of possess failure protection function, DC brushless motor drives
By predrive module, the controlled motor drive module after electric motor starting signal is received drives DC brushless motor to open to dynamic circuit
It is dynamic；Current sample module carries out current sample and output current sampled signal to motor drive module to overcurrent protection module；When
Motor drive module because DC brushless motor breaks down there is excessively stream when, overcurrent protection module is defeated according to current sampling signal
Going out to turn off control signal makes predrive module controlled motor drive module stop driving DC brushless motor work.In addition, pre- drive
Dynamic model block possesses over-voltage protecting function and overheat protective function, therefore, and the utility model can be realized powerful straight in driving
Possesses failure protection function while stream brushless electric machine.
In order to illustrate above-mentioned Brushless DC Motor Drive Circuit and device, once carry out in conjunction with specific embodiments detailed
Explanation：
Fig. 1 shows the structure for the Brushless DC Motor Drive Circuit that the utility model embodiment is provided, for the ease of saying
It is bright, the part related to the utility model embodiment is illustrate only, details are as follows：
As shown in figure 1, the utility model embodiment provide Brushless DC Motor Drive Circuit 10, with master controller 20,
Power supply input circuit 30 and DC brushless motor 40 are connected, the control DC brushless motor work of master controller 20, power input
Circuit 30 is that Brushless DC Motor Drive Circuit 10 is powered；Brushless DC Motor Drive Circuit 10 includes：Predrive module 101,
Motor drive module 102, overcurrent protection module 103 and current sample module 104.
The first input end of predrive module 101 is connected with master controller 20, the second input of predrive module 101 with
The output end connection of overcurrent protection module 103, the output end of predrive module 101 connects with the input of motor drive module 102
Connect, motor drive module 102 is connected with power supply input circuit 30, the first output end and brush DC of motor drive module 102
The input connection of motor 40, the second output end of motor drive module 102 connects with the second input of current sample module 104
Connect, the first input end of current sample module 104 is connected with the output end of predrive module 101, current sample module 104 it is defeated
Go out end to be connected with the input of overcurrent protection module 103.
The driving of the controlled motor drive module 102 brush DC electricity after electric motor starting signal is received of predrive module 101
Machine 40 starts；Current sample module 104 carries out current sample and output current sampled signal to motor drive module 103 to excessively stream
Protection module 103；When there is excessively stream because breaking down DC brushless motor 40 in motor drive module 102, overcurrent protection mould
Block 103 makes the controlled motor drive module 102 of predrive module 101 stop drive according to current sampling signal output shut-off control signal
Dynamic DC brushless motor 40 works.
Fig. 2 shows the circuit structure for the Brushless DC Motor Drive Circuit that the utility model embodiment is provided, in order to just
In explanation, the part related to the utility model embodiment is illustrate only, details are as follows：
As shown in Fig. 2 as the embodiment of the utility model one, predrive module 101 includes：With door U1, first resistor R1,
First inverter buffer U2, predrive chip U3, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5,
Six resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9 and the tenth resistance R10.
First input end with door U1 is the first input end of predrive module 101, and the second input with door U1 is pre-
Second input of drive module 101, is connected with door U1 output end with first resistor R1 first end, and the of first resistor R1
Two ends are connected with the first inverter buffer U2 input, the first inverter buffer U2 output end and predrive chip U3 drive
Dynamic pin EN connections, predrive chip U3 the first high raster data model pin GHA, the first source drive pin SA, the first low grid
Pole driving pin GLA, the second high raster data model pin GHB, the second source drive pin SB, the second low raster data model pin GLB,
The low raster data model pin GLC difference second resistances R2 of 3rd high raster data model pin GHC, the 3rd source drive pin SC and the 3rd
First end, 3rd resistor R3 first end, the 4th resistance R4 first end, the 5th resistance R5 first end, the 6th resistance R6
First end, the 7th resistance R7 first end, the 8th resistance R8 first end, the 9th resistance R9 first end and the tenth resistance
R10 first end connection, second resistance R2 the second end, 3rd resistor R3 the second end, the 4th resistance R4 the second end, the 5th
Resistance R5 the second end, the 6th resistance R6 the second end, the 7th resistance R7 the second end, the 8th resistance R8 the second end, the 9th
The signal detection pin SENSE at resistance R9 the second end, the tenth resistance R10 the second end and predrive chip U3 is collectively formed
The output end of predrive module.
Specifically, above-mentioned predrive chip U3 is model A4938 motor drive ic, A4918 motor drive ics
With disorderly closedown, overvoltage protection, the function such as overtemperature protection can in time have in the case where DC brushless motor breaks down
Effect ground protection motor and chip.
Motor drive module 102 includes：First N-type metal-oxide-semiconductor Q1, the second N-type metal-oxide-semiconductor Q2, the 3rd N-type metal-oxide-semiconductor Q3, the 4th
N-type metal-oxide-semiconductor Q4, the 5th N-type metal-oxide-semiconductor Q5 and the 6th N-type metal-oxide-semiconductor Q6.
First N-type metal-oxide-semiconductor Q1 grid, the second N-type metal-oxide-semiconductor Q2 grid, the 3rd N-type metal-oxide-semiconductor Q3 grid, the 4th N
Type metal-oxide-semiconductor Q4 grid, the 5th N-type metal-oxide-semiconductor Q5 grid, the 6th N-type metal-oxide-semiconductor Q6 grid, the first N-type metal-oxide-semiconductor Q1 source
The source electrode of pole, the 3rd N-type metal-oxide-semiconductor Q3 source electrode and the 5th N-type metal-oxide-semiconductor Q5 collectively forms the input of motor drive module,
First N-type metal-oxide-semiconductor Q1 drain electrode is connected with power supply input circuit 30, the first N-type metal-oxide-semiconductor Q1 source electrode and the second N-type metal-oxide-semiconductor Q2
Drain electrode connection, the second N-type metal-oxide-semiconductor Q2 source electrode is connected with the 4th N-type metal-oxide-semiconductor Q4 source electrode, the 3rd N-type metal-oxide-semiconductor Q3 leakage
Pole is connected with the first N-type metal-oxide-semiconductor Q1 drain electrode, and the 3rd N-type metal-oxide-semiconductor Q3 source electrode is connected with the 4th N-type metal-oxide-semiconductor Q4 drain electrode,
5th N-type metal-oxide-semiconductor Q5 drain electrode is connected with the 3rd N-type metal-oxide-semiconductor Q3 drain electrode, the source electrode and the 6th N-type MOS of the 5th N-type metal-oxide-semiconductor
The drain electrode connection of pipe, the source electrode of the 6th N-type metal-oxide-semiconductor is connected with the source electrode of the 4th N-type metal-oxide-semiconductor, the source electrode of the first N-type metal-oxide-semiconductor, the
Three N-type metal-oxide-semiconductor Q3 source electrode and the first output end that the 5th N-type metal-oxide-semiconductor Q5 source electrode is motor drive module 102, the 6th N
Type metal-oxide-semiconductor Q6 source electrode is the second output end of motor drive module 103.
Specifically, in the utility model embodiment, above-mentioned first N-type metal-oxide-semiconductor Q1, the second N-type metal-oxide-semiconductor Q2, the 3rd N-type
Metal-oxide-semiconductor Q3, the 4th N-type metal-oxide-semiconductor Q4, the 5th N-type metal-oxide-semiconductor Q5 and the 6th N-type metal-oxide-semiconductor Q6 use model BSC039N06NS
Small package metal-oxide-semiconductor.BSC039N06NS metal-oxide-semiconductor has power big, small volume, and system effectiveness is high, the low spy of voltage overshoot
Point, can effectively improve the stability of system using the metal-oxide-semiconductor of the model and reduce the volume and cost of system.
Current sample module 104 includes：11st resistance R11, the 12nd resistance R12, the 13rd resistance R13, the 14th
Resistance R14, the 15th resistance R15 and the 16th resistance R16.
11st resistance R11 first end is the first input end of current sample module 104, the of the 12nd resistance R13
One end is the second input of current sample module 104, the 11st resistance R11 the second end and the first of the 13rd resistance R13
End connection, the 12nd resistance R12 first end is connected with the 11st resistance R11 first end, the 11st resistance R11 the second end
It is connected with the 13rd resistance R13 the second end, the 14th resistance R14 first end is connected with the 13rd resistance R13 first end,
14th resistance R14 the second end is connected with the 13rd resistance R13 the second end, the 15th resistance R15 first end and the tenth
Four resistance R14 first end connection, the 15th resistance R15 the second end is connected with the 14th resistance R14 the second end, and the 16th
Resistance R16 first end is connected with the 15th resistance R15 first end, the 16th resistance R16 the second end and the 15th resistance
R15 the second end connection, the 13rd resistance R13 the second end ground connection, the 16th resistance R16 first end is current sample module
Output end.Wherein, the 13rd resistance R13, the 14th resistance R14, the 15th resistance R15 and the 16th resistance R16 are electricity
Flow sampling resistor.
Overcurrent protection module 103 includes voltage comparison unit 103a and inverter buffer unit 103b.
Voltage comparison unit 103a input is the input of overcurrent protection module 103, voltage comparison unit 103a's
Output end is connected with inverter buffer unit 103b input, and inverter buffer unit 103b output end is overcurrent protection module
103 output end.
Specifically, voltage comparison unit 103a includes：17th resistance R17, the first electric capacity C1, the second electric capacity C2, the tenth
Eight resistance R18, the 19th resistance R19, the 20th resistance R20, the 21st resistance R21, diode D1, comparator U4, the 3rd
Electric capacity C3, the 22nd resistance R22, the 23rd resistance R23, the 24th resistance R24, the 25th resistance R25.
17th resistance R17 first end is voltage comparison unit 103a input, the 17th resistance R17 the second end
It is connected with the first electric capacity C1 first end, the first electric capacity C1 the second end ground connection, the second electric capacity C2 first end and the first electric capacity
C1 first end connection, the second electric capacity C2 the second end is connected with the first electric capacity C1 the second end, the second electric capacity C2 first end
It is connected with comparator U4 first input end, the 18th resistance R18 the first termination dc source VCC, the 18th resistance R18's
Second end is connected with diode D1 negative pole, diode D1 plus earth, the 19th resistance R19 first end and the 18th electricity
R18 the second end connection is hindered, the 19th resistance R19 first end is connected with the 20th resistance R20 first end, the 20th resistance
R20 the second end ground connection, the 21st resistance R21 first end is connected with the 19th resistance R19 the second end, and the 21st
Second end of R21 resistance is connected with comparator U4 the second input, comparator U4 negative power end ground connection, and comparator U4 is just
Power supply terminates power supply VDD, and the 3rd electric capacity C3 first end and the second end connect comparator U4 negative power end and just respectively
Power end, the 22nd resistance R22 first end connection power supply VDD, the 22nd resistance R22 the second end and comparator
U4 output end connection, the 23rd resistance R23 first end is connected with the 21st resistance R21 the second end, and the 23rd
Resistance R23 the second end is connected with the 22nd resistance R22 the second end, the 24th resistance R24 first end and the 20th
Two resistance R22 the second end connection, the 24th resistance R24 the second end is connected with the 25th resistance R25 first end, the
25 resistance R25 the second end ground connection, the 24th resistance R24 the second end is voltage comparison unit 103a output end.
It should be noted that above-mentioned dc source VCC is+24V dc source, power supply VDD is+5V direct current
Source.
Inverter buffer unit 103b includes：Second inverter buffer U5, the 26th resistance R26, the 3rd inverter buffer
U6 and the 27th resistance R27.
Second inverter buffer U5 input is inverter buffer unit 103b input, the second inverter buffer U5's
Output end is connected with the 26th resistance R26 first end, the 26th resistance R26 the second end and the 3rd inverter buffer U6
Input connection, the 3rd inverter buffer U6 output end is connected with the 27th resistance R27 first end, and the 27th is electric
The second end for hindering R27 is inverter buffer unit 103b output end.
Above-mentioned Brushless DC Motor Drive Circuit is described further below in conjunction with operation principle and Fig. 2：
Predrive chip U3 in predrive module 101 produces high current after electric motor starting signal is received drives motor
The first N-type metal-oxide-semiconductor Q1, the second N-type metal-oxide-semiconductor Q2, the 3rd N-type metal-oxide-semiconductor Q3, the 4th N-type metal-oxide-semiconductor Q4 in dynamic model block 102, the 5th
N-type metal-oxide-semiconductor Q5 and the 6th N-type metal-oxide-semiconductor Q6 conductings, so as to drive DC brushless motor 40 to start.
When there is excessively stream because breaking down DC brushless motor 40 in motor drive module 102, current sample module 104
In output end output current sampling signal magnitude of voltage increase, voltage comparison unit 103a is according to above-mentioned current sampling signal
Magnitude of voltage compared threshold value with predeterminated voltage and be compared, when the magnitude of voltage of current sampling signal higher than predeterminated voltage compares threshold value
When, output shut-off control signal；Inverter buffer unit 103b carries out exporting after inverter buffer processing to above-mentioned shut-off control signal
To current sampling signal output shut-off control signal predrive unit 101, it is necessary to illustrate, when the voltage of current sampling signal
When value compares threshold value higher than predeterminated voltage, output shut-off control signal is low level signal, by the second inverter buffer U5 and
The shut-off control signal that 3rd inverter buffer U6 exported after inverter buffer processing is still low level signal, wherein, preset
Voltage ratio refers to compared with threshold value, it is set in advance in order to judge that over current fault occurs in DC brushless motor when current sampling unit institute it is defeated
The magnitude of voltage gone out.After above-mentioned predrive unit 101 receives above-mentioned shut-off control signal, predrive chip U3 exports low electricity
It is flat, so that the first N-type metal-oxide-semiconductor Q1 of motor drive module 102, the second N-type metal-oxide-semiconductor Q2, the 3rd N-type metal-oxide-semiconductor Q3, the 4th N-type
Metal-oxide-semiconductor Q4, the 5th N-type metal-oxide-semiconductor Q5 and the 6th N-type metal-oxide-semiconductor Q6 grid be low level so that turn off the first N-type metal-oxide-semiconductor Q1,
Second N-type metal-oxide-semiconductor Q2, the 3rd N-type metal-oxide-semiconductor Q3, the 4th N-type metal-oxide-semiconductor Q4, the 5th N-type metal-oxide-semiconductor Q5 and the 6th N-type metal-oxide-semiconductor Q6,
And then stop driving DC brushless motor 40 to work.Realize overcurrent protection function.
The Brushless DC Motor Drive Circuit that the utility model embodiment is provided is receiving motor by predrive module
Controlled motor drive module driving DC brushless motor starts after enabling signal；Current sample module is carried out to motor drive module
Current sample and output current sampled signal are to overcurrent protection module；When motor drive module because DC brushless motor breaks down
And when there is excessively stream, the voltage comparison unit of overcurrent protection module is compared threshold value with predeterminated voltage according to current sampling signal to be carried out
Compare, when the magnitude of voltage of current sampling signal compares threshold value more than predeterminated voltage, output shut-off control signal makes predrive module
Controlled motor drive module stops driving DC brushless motor work.In addition, predrive module possesses over-voltage protecting function and mistake
Heat protection function, therefore, the utility model can realize while powerful DC brushless motor is driven possess failure guarantor
Protective function.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of Brushless DC Motor Drive Circuit, is connected with master controller, power supply input circuit and DC brushless motor, institute
State DC brushless motor described in main controller controls to work, the power supply input circuit is the Brushless DC Motor Drive Circuit
Power supply, it is characterised in that the Brushless DC Motor Drive Circuit includes：
Predrive module, motor drive module, overcurrent protection module and current sample module；
The first input end of the predrive module is connected with the master controller, the second input of the predrive module with
The output end connection of the overcurrent protection module, the output end of the predrive module and the input of the motor drive module
Connection, the motor drive module is connected with the power supply input circuit, the first output end of the motor drive module and institute
State the input connection of DC brushless motor, the of the second output end of the motor drive module and the current sample module
Two inputs are connected, and the first input end of the current sample module is connected with the output end of the predrive module, the electricity
The output end of stream sampling module is connected with the input of the overcurrent protection module；
The predrive module controls the motor drive module to drive the brush DC after electric motor starting signal is received
Electric motor starting；The current sample module carries out current sample and output current sampled signal to the motor drive module to institute
State overcurrent protection module；It is described when the motor drive module excessively stream occurs because breaking down the DC brushless motor
Overcurrent protection module makes the predrive module control the motor according to current sampling signal output shut-off control signal
Drive module stops the driving DC brushless motor work.
2. Brushless DC Motor Drive Circuit as claimed in claim 1, it is characterised in that the predrive module includes：
With door, first resistor, the first inverter buffer, predrive chip, second resistance, 3rd resistor, the 4th resistance, the 5th electricity
Resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance and the tenth resistance；
The first input end with door is the first input end of the predrive module, and described is institute with door the second input
The second input of predrive module is stated, it is described to be connected with the output end of door with the first end of the first resistor, described first
Second end of resistance is connected with the input of first inverter buffer, the output end of first inverter buffer with it is described
The driving pin connection of predrive chip, the first high raster data model pin of the predrive chip, the first source drive pin,
First low raster data model pin, the second high raster data model pin, the second source drive pin, the second low raster data model pin,
Three high raster data model pins, the 3rd source drive pin and the 3rd low raster data model pin connect the of the second resistance respectively
One end, the first end of the 3rd resistor, the first end of the 4th resistance, the first end of the 5th resistance, the described 6th
The first end of resistance, the first end of the 7th resistance, the first end of the 8th resistance, the first end of the 9th resistance and
The first end connection of tenth resistance, the second end of the second resistance, the second end of the 3rd resistor, the 4th electricity
Second end of resistance, the second end of the 5th resistance, the second end of the 6th resistance, the second end of the 7th resistance, institute
State the second end, the second end of the 9th resistance, the second end of the tenth resistance and the predrive core of the 8th resistance
The signal detection pin of piece collectively forms the output end of the predrive module.
3. Brushless DC Motor Drive Circuit as claimed in claim 2, it is characterised in that the predrive chip is model
A4938 motor drive ic.
4. Brushless DC Motor Drive Circuit as claimed in claim 1, it is characterised in that the motor drive module includes：
First N-type metal-oxide-semiconductor, the second N-type metal-oxide-semiconductor, the 3rd N-type metal-oxide-semiconductor, the 4th N-type metal-oxide-semiconductor, the 5th N-type metal-oxide-semiconductor and the 6th N-type
Metal-oxide-semiconductor；
It is the grid of the first N-type metal-oxide-semiconductor, the grid of the second N-type metal-oxide-semiconductor, the grid of the 3rd N-type metal-oxide-semiconductor, described
The grid of 4th N-type metal-oxide-semiconductor, the grid of the 5th N-type metal-oxide-semiconductor, the grid of the 6th N-type metal-oxide-semiconductor, first N-type
The source electrode of the source electrode of metal-oxide-semiconductor, the source electrode of the 3rd N-type metal-oxide-semiconductor and the 5th N-type metal-oxide-semiconductor collectively forms the motor
The input of drive module, the drain electrode of the first N-type metal-oxide-semiconductor is connected with the power supply input circuit, the first N-type MOS
The source electrode of pipe is connected with the drain electrode of the second N-type metal-oxide-semiconductor, the source electrode of the second N-type metal-oxide-semiconductor and the 4th N-type metal-oxide-semiconductor
Source electrode connection, the drain electrode of the 3rd N-type metal-oxide-semiconductor is connected with the drain electrode of the first N-type metal-oxide-semiconductor, the 3rd N-type MOS
The source electrode of pipe is connected with the drain electrode of the 4th N-type metal-oxide-semiconductor, drain electrode and the 3rd N-type metal-oxide-semiconductor of the 5th N-type metal-oxide-semiconductor
Drain electrode connection, the source electrode of the 5th N-type metal-oxide-semiconductor is connected with the drain electrode of the 6th N-type metal-oxide-semiconductor, the 6th N-type MOS
The source electrode of pipe is connected with the source electrode of the 4th N-type metal-oxide-semiconductor, the source electrode of the first N-type metal-oxide-semiconductor, the 3rd N-type metal-oxide-semiconductor
Source electrode and the 5th N-type metal-oxide-semiconductor source electrode be the motor drive module the first output end, the 6th N-type MOS
The source electrode of pipe is the second output end of the motor drive module.
5. Brushless DC Motor Drive Circuit as claimed in claim 1, it is characterised in that the current sample module includes：
11st resistance, the 12nd resistance, the 13rd resistance, the 14th resistance, the 15th resistance and the 16th resistance；
The first end of 11st resistance is the first input end of the current sample module, the first of the 12nd resistance
Hold as the second input of the current sample module, the second end of the 11st resistance and the first of the 13rd resistance
End connection, the first end of the 12nd resistance is connected with the first end of the 11st resistance, and the of the 11st resistance
Two ends are connected with the second end of the 13rd resistance, the first end of the 14th resistance and the first of the 13rd resistance
End connection, the second end of the 14th resistance is connected with the second end of the 13rd resistance, and the of the 15th resistance
One end is connected with the first end of the 14th resistance, the second end of the 15th resistance and the second of the 14th resistance
End connection, the first end of the 16th resistance is connected with the first end of the 15th resistance, and the of the 16th resistance
Two ends are connected with the second end of the 15th resistance, the second end ground connection of the 13rd resistance, the 16th resistance
First end is the output end of the current sample module.
6. Brushless DC Motor Drive Circuit as claimed in claim 1, it is characterised in that the overcurrent protection module includes electricity
Press comparing unit and inverter buffer unit；
The input of the voltage comparison unit is the input of the overcurrent protection module, the output of the voltage comparison unit
End is connected with the input of the inverter buffer unit, and the output end of the inverter buffer unit is the overcurrent protection module
Output end.
7. Brushless DC Motor Drive Circuit as claimed in claim 6, it is characterised in that the voltage comparison unit includes：
17th resistance, the first electric capacity, the second electric capacity, the 18th resistance, the 19th resistance, the 20th resistance, the 21st electricity
Resistance, diode, comparator, the 3rd electric capacity, the 22nd resistance, the 23rd resistance, the 24th resistance, the 25th electricity
Resistance；
The first end of 17th resistance be the voltage comparison unit input, the second end of the 17th resistance with
First electric capacity first end connection, first electric capacity the second end ground connection, the first end of second electric capacity with it is described
The first end connection of first electric capacity, the second end of second electric capacity is connected with the second end of first electric capacity, and described second
The first end of electric capacity is connected with the first input end of the comparator, the first termination dc source of the 18th resistance, institute
The second end for stating the 18th resistance is connected with the negative pole of the diode, the plus earth of the diode, the 19th electricity
The first end of resistance is connected with the second end of the 18th resistance, first end and the 20th resistance of the 19th resistance
First end connection, the 20th resistance the second end ground connection, the first end and the described 19th of the 21st resistance
The second end connection of resistance, the second end of the 21st resistance is connected with the second input of the comparator, the ratio
Negative power end compared with device is grounded, the positive supply termination power supply of the comparator, the first end and second of the 3rd electric capacity
End connects the negative power end and positive power source terminal of the comparator, the first end connection power supply electricity of the 22nd resistance respectively
Source, the second end of the 22nd resistance is connected with the output end of the comparator, the first end of the 23rd resistance
It is connected with the second end of the 21st resistance, the of the second end of the 23rd resistance and the 22nd resistance
Two ends are connected, and the first end of the 24th resistance is connected with the second end of the 22nd resistance, and the described 24th
Second end of resistance is connected with the first end of the 25th resistance, the second end ground connection of the 25th resistance, described
Second end of the 24th resistance is the output end of the voltage comparison unit.
8. Brushless DC Motor Drive Circuit as claimed in claim 6, it is characterised in that the inverter buffer unit includes：
Second inverter buffer, the 26th resistance, the 3rd inverter buffer and the 27th resistance；
The input of second inverter buffer is the input of the inverter buffer unit, second inverter buffer
Output end is connected with the first end of the 26th resistance, and the second end of the 26th resistance is anti-phase slow with the described 3rd
The input connection of device is rushed, the output end of the 3rd inverter buffer is connected with the first end of the 27th resistance, institute
The second end for stating the 27th resistance is the output end of the inverter buffer unit.
9. a kind of DC brushless motor driving device, including master controller and power supply input circuit, it is characterised in that the direct current
Brushless motor driven apparatus also includes the Brushless DC Motor Drive Circuit as described in claim 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720133733.1U CN206524791U (en) | 2017-02-15 | 2017-02-15 | A kind of Brushless DC Motor Drive Circuit and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720133733.1U CN206524791U (en) | 2017-02-15 | 2017-02-15 | A kind of Brushless DC Motor Drive Circuit and device |
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| CN206524791U true CN206524791U (en) | 2017-09-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964539A (en) * | 2018-07-24 | 2018-12-07 | 中国石油集团渤海钻探工程有限公司 | A kind of motor-drive circuit and method for bottom drill tool powered actuation mechanism |
| CN110176751A (en) * | 2018-02-21 | 2019-08-27 | 株式会社自动网络技术研究所 | Power supply control apparatus |
| CN113520222A (en) * | 2021-07-29 | 2021-10-22 | 深圳市伽兰德科技有限公司 | Brushless motor control method and device for intelligent dust collector |
| CN113572396A (en) * | 2021-06-09 | 2021-10-29 | 广东华芯微特集成电路有限公司 | Hall-free direct current brushless motor controller and motor starting method |
-
2017
- 2017-02-15 CN CN201720133733.1U patent/CN206524791U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176751A (en) * | 2018-02-21 | 2019-08-27 | 株式会社自动网络技术研究所 | Power supply control apparatus |
| CN110176751B (en) * | 2018-02-21 | 2021-04-16 | 株式会社自动网络技术研究所 | Power supply control device |
| CN108964539A (en) * | 2018-07-24 | 2018-12-07 | 中国石油集团渤海钻探工程有限公司 | A kind of motor-drive circuit and method for bottom drill tool powered actuation mechanism |
| CN113572396A (en) * | 2021-06-09 | 2021-10-29 | 广东华芯微特集成电路有限公司 | Hall-free direct current brushless motor controller and motor starting method |
| CN113520222A (en) * | 2021-07-29 | 2021-10-22 | 深圳市伽兰德科技有限公司 | Brushless motor control method and device for intelligent dust collector |
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