CN202818200U - Motor control chip and DC brushless motor - Google Patents
Motor control chip and DC brushless motor Download PDFInfo
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- CN202818200U CN202818200U CN2012203973998U CN201220397399U CN202818200U CN 202818200 U CN202818200 U CN 202818200U CN 2012203973998 U CN2012203973998 U CN 2012203973998U CN 201220397399 U CN201220397399 U CN 201220397399U CN 202818200 U CN202818200 U CN 202818200U
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Abstract
The utility model provides a motor control chip, which comprises a voltage regulator, a magnetic field sensing circuit, a linear driving circuit, a protection circuit, a first hysteresis comparator, a lock-rotor protection automatic starting circuit, and an FG/RD open-drain output tube. The motor control chip further comprises an electrified reset circuit and a start protection circuit. According to the utility model, the start protection circuit is additionally arranged on the basis of the prior art, thereby enabling the duty ratio of output square waves is increased gradually, and effectively solves the problem in the prior art that the motor control chip is caused to be overloaded or burned because large starting current exists.
Description
Technical field
The utility model relates to circuit field, relates in particular a kind of motor-driven control chip provided and DC Brushless Motor.
Background technology
Along with the arrival of electronic age, the integrated level of electronic product is also more and more higher, and meanwhile, the heat radiation of electronic product also becomes an evaluation Quality of electronic products quality whether key factor.Usually, can adopt the method that in electronic product, adds the fan of suitable power, to reach the purpose to electronic product radiating, as in computer, by DC fan central processing unit, voltage adapter and graphic process unit be dispelled the heat respectively.These DC fan adopt Brushless DC motor to drive usually.
The circuit structure of single-coil brushless DC motor control chip of the prior art comprises the pull-up resistor RD190 of d.c. motor control chip 100, brushless D. C. motor stator coil 180, FG or RD output as shown in Figure 1.Wherein, d.c. motor control chip 100 comprises: voltage regulator 110, magnetic field sensing circuit 120, linear drive circuit 130, protective circuit 140, hysteresis comparator 150, rotation-clogging protection automatic starting circuit 160 and FG/RD open Lou (OD) efferent duct 170.Magnetic field sensing circuit 120 comprises: Hall element 121, preamplifier 122 and dynamic offset are eliminated circuit 123.Protective circuit 140 comprises: thermal-shutdown circuit 141 and circuit overcurrent protection 142.
Wherein, voltage regulator 110 provides stable power supply for the internal chip enable signal processing module.Hall sensor 121 is converted to the signal of telecommunication with the rotor magnetic field intensity that senses, preamplifier 122 amplifies faint sensing electric signals, converts the Linear Driving signal that enters the amplitude limit state and hysteresis comparator 150 to for linear amplifier 130 and converts the square-wave signal that frequency changes with the rotating speed of motor rotor to.Dynamic deflection is eliminated the low frequency skew composition that circuit 123 is used for eliminating preamplifier 122 output signals, thereby the signal that is loaded with the rotor field positional information is amplified in an output in the signal.Linear drive circuit 130 comprises the first amplifier 131 and the second amplifier 132, both input signal single spin-echos, thereby the first driver output OUT1 that produces and the second driver output OUT2 phase phasic difference 180 degree, the mutual commutation of OUT1 and OUT2 drives the stator coil 180 of d.c. motor like this, so that d.c. motor can rotate constantly.The square-wave signal that hysteresis comparator 150 produces is opened Lou (OD) efferent duct 170 through being used for driving FG/RD after the further shaping, and then produces the FG/RD signal by pull-up resistor 190.The square-wave signal that 160 pairs of hysteresis comparators of rotation-clogging protection automatic starting circuit 150 produce is monitored; when the cycle of square-wave signal is longer than the duration of setting in the chip; rotation-clogging protection automatic starting circuit 160 outputs one control signal; so that after system enters the stall state and continues a set point duration; automatically start, until the motor normal operation.
Yet there is a larger starting current in the d.c. motor drive circuit of said structure.Larger starting current can cause the current overload of fan and fan motor control chip, has seriously shortened the useful life of device even has directly damaged device.
The utility model content
In view of this, the utility model provides a kind of motor-driven control chip provided and DC Brushless Motor, has effectively solved in the prior art because the problem that exists larger starting current to cause motor-driven control chip provided overload or burn.
For achieving the above object, the utility model provides following technical scheme:
A kind of motor-driven control chip provided, comprise that voltage regulator, magnetic field sensing circuit, linear drive circuit, protective circuit, the first hysteresis comparator, rotation-clogging protection automatic starting circuit and FG/RD open leakage efferent duct, also comprise:
Input links to each other with the output of described voltage regulator, when the output voltage that monitors described voltage regulator reaches the first preset value, exports the electrify restoration circuit of a reset signal;
First input end links to each other with the output of described electrify restoration circuit; the second input links to each other with the output of described rotation-clogging protection automatic starting circuit; have one at least when the useful signal in the output signal of the output signal that monitors described electrify restoration circuit and described rotation-clogging protection automatic starting circuit, output one is in order to the starting protection circuit of the control signal controlling described linear drive circuit and open and turn-off.
Preferably, described starting protection circuit comprises: saw-toothed wave generator, charge pump, initializing circuit, the second hysteresis comparator and trigger;
The inverting input of described the second hysteresis comparator links to each other with the output of described saw-toothed wave generator; the in-phase input end of described the second hysteresis comparator links to each other with the output of described electric charge delivery side of pump and described initializing circuit respectively; the output of described the second hysteresis comparator links to each other with the input of described trigger, and the output of described trigger is as the output of described starting protection circuit.
Preferably, described saw-toothed wave generator comprises: current source I1, current source I2, switching tube Q1, switching tube Q2, switching tube Q3, switching tube Q4, the 3rd hysteresis comparator and capacitor C 1;
Described current source I1, described switching tube Q1, described switching tube Q2 and described current source I2 are in series, the in-phase input end of described the 3rd hysteresis comparator links to each other with the first reference signal and the second reference signal successively by described switching tube Q3 and switching tube Q4 respectively, described switching tube Q1 links to each other with the inverting input of described the 3rd hysteresis comparator and the first end of described capacitor C 1 respectively with the points of common connection of described switching tube Q2, the second end ground connection of described capacitor C 1, the output of described the 3rd hysteresis comparator respectively with the control end of described switching tube Q1, the control end of described switching tube Q2, the control end of the control end of described switching tube Q3 and described switching tube Q4 links to each other, and the inverting input of described the 3rd hysteresis comparator is as the output of described saw-toothed wave generator.
Preferably, described switching tube Q1 and described switching tube Q3 are the N-type metal-oxide-semiconductor, and described switching tube Q2 and described switching tube Q4 are P type metal-oxide-semiconductor.
Preferably, described charge pump comprises: switching tube Q5, switching tube Q6, switching tube Q7, capacitor C 2, capacitor C 3 and resistance R 1;
Described switching tube Q5, described switching tube Q6, described switching tube Q7 and described resistance are in series, the first termination direct voltage VDD of described switching tube Q5, the points of common connection of described switching tube Q6 and described switching tube Q7 links to each other with the first end of described capacitor C 2, the equal ground connection of the second end of the second end of described capacitor C 2 and described capacitor C 3, the first end of described resistance R 1 links to each other with the first end of described capacitor C 3, and as described electric charge delivery side of pump.
Preferably, described switching tube Q5, described switching tube Q6 and described switching tube Q7 are the N-type metal-oxide-semiconductor.
Preferably, described initializing circuit comprises: NOR gate and switching tube Q8;
Two inputs of described NOR gate are respectively as first input end and second input of described starting protection circuit; the output of described NOR gate links to each other with the control end of described switching tube Q8; the end of described switching tube Q8 links to each other with the preset reference signal, and the other end is as the output of described initializing circuit.
Preferably, described switching tube Q8 is P type metal-oxide-semiconductor.
Preferably, described saw-toothed wave generator is that frequency is the saw-toothed wave generator of 20kHz.
A kind of DC Brushless Motor comprises permanent magnet rotor and as above-mentioned middle any one motor-driven control chip provided.
Via above-mentioned technical scheme as can be known; compared with prior art; it is a kind of motor-driven control chip provided that the utility model provides; comprise voltage regulator; the magnetic field sensing circuit; linear drive circuit; protective circuit; the first hysteresis comparator; rotation-clogging protection automatic starting circuit and FG/RD open leakage efferent duct; also comprise: electrify restoration circuit and starting protection circuit; the application has increased the starting protection circuit on the basis of existing technology; so that the duty ratio of output square wave increases gradually, effectively solved in the prior art because the problem that exists larger starting current to cause motor-driven control chip provided overload or burn.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the electrical block diagram of single-coil brushless DC motor control chip in the prior art;
A kind of motor-driven control chip provided electrical block diagram that Fig. 2 provides for the application;
The structural representation of a kind of motor-driven control chip provided middle starting protection circuit that Fig. 3 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 2; a kind of motor-driven control chip provided structural representation that provides for the embodiment of the present application; comprise that voltage regulator 210, magnetic field sensing circuit 220, linear drive circuit 230, protective circuit 240, the first hysteresis comparator 250, rotation-clogging protection automatic starting circuit 260 and FG/RD open Lou efferent duct 290, also comprise: electrify restoration circuit 211 and starting protection circuit 261.
Wherein, the input of electrify restoration circuit 211 links to each other with the output of voltage regulator 210, when the output voltage that monitors voltage regulator 210 reaches the first preset value, exports a reset signal toward starting protection circuit 261.
The first input end of starting protection circuit 261 links to each other with the output of electrify restoration circuit 211; the second input links to each other with the output of rotation-clogging protection automatic starting circuit 260; when in the output signal of the output signal that monitors electrify restoration circuit 211 and rotation-clogging protection automatic starting circuit 261, having at least one to be useful signal; export a control signal 264, unlatching and the shutoff of described control signal 264 in order to control described linear drive circuit 230.
Wherein, voltage regulator 210 provides stable power supply for the internal chip enable signal processing module, and electrify restoration circuit 211 monitors voltage regulator 210, and completion system resets after voltage regulator 210 normal operations, and the permission system starts working.Magnetic field sensing circuit 220 comprises Hall element 221, and preamplifier 222 and dynamic deflection are eliminated circuit 223.Hall sensor 221 is converted to the signal of telecommunication with the rotor magnetic field intensity that senses, preamplifier 222 amplifies faint sensing electric signals, converts the Linear Driving signal that enters the amplitude limit state and the first hysteresis comparator 250 to for linear drive circuit 230 and converts the square-wave signal that frequency changes with the rotating speed of motor rotor to.Dynamic deflection is eliminated the low frequency skew composition that circuit 223 is used for eliminating preamplifier 222 output signals, thereby the signal that is loaded with the rotor field positional information is amplified in an output in the signal.Linear drive circuit 230 comprises the first amplifier 231 and the second amplifier 232, both input signal single spin-echos, thereby the first driver output OUT1 that produces and the second driver output OUT2 phase phasic difference 180 degree, the mutual commutation of OUT1 and OUT2 drives the stator coil 280 of d.c. motor like this, so that d.c. motor can rotate constantly.The square-wave signal that the first hysteresis comparator 250 produces is opened Lou (OD) efferent duct 270 through being used for driving FG/RD after the further shaping, and then produces the FG/RD signal by pull-up resistor 290.The square-wave signal that 260 pairs of the first hysteresis comparators 250 of rotation-clogging protection automatic starting circuit produce is monitored; when the cycle of square-wave signal is longer than the duration of setting in the chip; rotation-clogging protection automatic starting circuit 260 outputs one control signal; so that after system enters the stall state and continues a set point duration; automatically start, until the motor normal operation.Starting protection circuit 261 monitors the output signal 262 of electrify restoration circuit 211 and the output signal 263 of rotation-clogging protection self-start circuit 260; in the two, has one at least effectively; power-on protective circuit is just started working; export a control signal 264 and remove to control linear drive circuit 230, system enters start-up mode.
Preferably, the application also provides a kind of specific implementation circuit of starting protection circuit 261, as shown in Figure 3, comprising: saw-toothed wave generator 310, charge pump 320, initializing circuit 330, the second hysteresis comparator 340 and trigger 350.Its concrete annexation is:
The inverting input of described the second hysteresis comparator 340 links to each other with the output of described saw-toothed wave generator 310; the in-phase input end of described the second hysteresis comparator 340 links to each other with the output of described charge pump 320 and the output of described initializing circuit 330 respectively; the output of described the second hysteresis comparator 340 links to each other with the input of described trigger 350, and the output of described trigger 350 is as the output of described starting protection circuit.
Concrete, described saw-toothed wave generator 310 comprises: current source I1, current source I2, switching tube Q1, switching tube Q2, switching tube Q3, switching tube Q4, the 3rd hysteresis comparator and capacitor C 1.
Described current source I1, described switching tube Q1, described switching tube Q2 and described current source I2 are in series, the in-phase input end of described the 3rd hysteresis comparator links to each other with the first reference signal and the second reference signal successively by described switching tube Q3 and switching tube Q4 respectively, described switching tube Q1 links to each other with the inverting input of described the 3rd hysteresis comparator and the first end of described capacitor C 1 respectively with the points of common connection of described switching tube Q2, the second end ground connection of described capacitor C 1, the output of described the 3rd hysteresis comparator respectively with the control end of described switching tube Q1, the control end of described switching tube Q2, the control end of the control end of described switching tube Q3 and described switching tube Q4 links to each other, and the inverting input of described the 3rd hysteresis comparator is as the output of described saw-toothed wave generator 310.Need to prove that among the application, described switching tube Q1 and Q3 are the switching tube of high level conducting, are specifically as follows the N-type metal-oxide-semiconductor, the switching tube that described switching tube Q2 and described switching tube Q4 are the low level conducting is specifically as follows P type metal-oxide-semiconductor.
Concrete, described charge pump 320 comprises: switching tube Q5, switching tube Q6, switching tube Q7, capacitor C 2, capacitor C 3 and resistance R 1.
Described switching tube Q5, described switching tube Q6, described switching tube Q7 and described resistance are in series, the first termination direct voltage VDD of described switching tube Q5, the points of common connection of described switching tube Q6 and described switching tube Q7 links to each other with the first end of described capacitor C 2, the equal ground connection of the second end of the second end of described capacitor C 2 and described capacitor C 3, the first end of described resistance R 1 links to each other with the first end of described capacitor C 3, and as the output of described charge pump 320.In the present embodiment, switching tube Q5, switching tube Q6 and switching tube Q7 are the switching tube of high level conducting, can be N-type metal-oxide-semiconductor or NPN triode etc., differ one for example at this.
Concrete, described initializing circuit 330 comprises: NOR gate 333 and switching tube Q8.
Two inputs of described NOR gate are respectively as first input end and second input of described starting protection circuit; the output of described NOR gate links to each other with the control end of described switching tube Q8; the end of described switching tube Q8 links to each other with the preset reference signal; the other end is as the output of described initializing circuit 330; wherein, described switching tube Q8 can be P type metal-oxide-semiconductor.
The operation principle of the starting protection circuit that the application provides is as follows: when system powers on; initialization completion signal 331 and guard mode restoring signal 332; when all being low level; two output NOR gate, 333 outputs, one high level; control switch Q8 disconnects; switch Q5 is closed, and trigger 350 reset signals 352 also are high level simultaneously, and the starting protection circuit is opened.At this moment, capacitor C 2 is under the switch motion of switch Q6, by power vd D is sampled, again since at the next cycle of non-overlapping clock with capacitor C 2 and capacitor C 3 parallel connections, and then the voltage Vcp that remains on the capacitor C 3 progressively raises, and hysteresis comparator 340 compares sawtooth signal and charge pump output signal VCP, exports the square wave of certain duty ratio, after advancing trigger 350 sampling maintenances, generate the break-make that signal 353 removes the linear drive circuit 230 in the control chart 2.Since the output voltage V CP of charge pump the startup stage raise gradually; so the duty ratio of hysteresis comparator output square wave increases gradually; be higher than the maximum level Vref1 of sawtooth waveforms fully as VCP after, the starting protection process is finished, and system enters normal operating conditions.
The computational methods of the guard time of the starting protection circuit that employing the application provides are:
Control signal 353 minimum duty cycle D
MINBy initializing signal V
RefSet, computing formula is: D
MIN=V
Ref-V
Ref2/ V
Ref1-V
Ref2In order not affect the stability of system's loop, generally much larger than motor commutation frequency, frequency of oscillation is taken as 20kHz to the sawtooth waveforms frequency of oscillation in this example.The charge pump output voltage rise time, TSP was set to the circuit start guard time.Switch Q6, Q7 and capacitor C 2 can seen equivalent resistance R, then a R=1/C
1f
CP, then switch Q6, Q7, the circuit total regression that capacitor C 1, C2 form is: V
CP(t)=V
DD+ (V
Ref-V
DD) e
-t/ τ, wherein, τ=RC
2=C
2/ C
1f
CP, can derive the circuit start equation of time from the total regression equation of circuit: t=-τ * ln[(V
Ref1-V
DD)/V
Ref-V
DD)].
Except this, the application also provides a kind of DC Brushless Motor, comprises the motor-driven control chip provided of any one in permanent magnet rotor and above-described embodiment.
To sum up, it is a kind of motor-driven control chip provided that the application provides, and is applicable to drive the Brushless DC motor with permanent magnet rotor, comprising: a Hall magnetic field sensor, and for the relative position of sensing permanent magnet, and the output sensing signal; One linear drive circuit be used for to amplify this sensing signal, and generation can amplify the gain that sensing signal enters the inelastic region, drives direct current machine with output current; One rotation-clogging protection and automatic starting circuit for detection of the stall state of motor, and are realized resetting automatically; One circuit overcurrent protection, for the protection of motor system because of the excessive damage of drive current; One starting protection circuit, its effect be, in the starting stage that direct current motor system is started working, makes the drive current rising, finally is transitioned into normal operating conditions, the soft start of completion system.The application has the integrated level height, and starting current is little, and is safe, the advantage that fan noise is little.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the device that embodiment provides, because it is corresponding with the method that embodiment provides, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
Above-mentioned explanation to the embodiment that provides makes this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but principle and the features of novelty the widest consistent scope that provides with this paper will be provided.
Claims (10)
- One kind motor-driven control chip provided, comprise that voltage regulator, magnetic field sensing circuit, linear drive circuit, protective circuit, the first hysteresis comparator, rotation-clogging protection automatic starting circuit and FG/RD open leakage efferent duct, it is characterized in that, also comprise:Input links to each other with the output of described voltage regulator, when the output voltage that monitors described voltage regulator reaches the first preset value, exports the electrify restoration circuit of a reset signal;First input end links to each other with the output of described electrify restoration circuit; the second input links to each other with the output of described rotation-clogging protection automatic starting circuit; have one at least when the useful signal in the output signal of the output signal that monitors described electrify restoration circuit and described rotation-clogging protection automatic starting circuit, output one is in order to the starting protection circuit of the control signal controlling described linear drive circuit and open and turn-off.
- 2. according to claim 1 motor-driven control chip provided, it is characterized in that described starting protection circuit comprises: saw-toothed wave generator, charge pump, initializing circuit, the second hysteresis comparator and trigger;The inverting input of described the second hysteresis comparator links to each other with the output of described saw-toothed wave generator; the in-phase input end of described the second hysteresis comparator links to each other with the output of described electric charge delivery side of pump and described initializing circuit respectively; the output of described the second hysteresis comparator links to each other with the input of described trigger, and the output of described trigger is as the output of described starting protection circuit.
- 3. according to claim 2 motor-driven control chip provided, it is characterized in that described saw-toothed wave generator comprises: current source I1, current source I2, switching tube Q1, switching tube Q2, switching tube Q3, switching tube Q4, the 3rd hysteresis comparator and capacitor C 1;Described current source I1, described switching tube Q1, described switching tube Q2 and described current source I2 are in series, the in-phase input end of described the 3rd hysteresis comparator links to each other with the first reference signal and the second reference signal successively by described switching tube Q3 and switching tube Q4 respectively, described switching tube Q1 links to each other with the inverting input of described the 3rd hysteresis comparator and the first end of described capacitor C 1 respectively with the points of common connection of described switching tube Q2, the second end ground connection of described capacitor C 1, the output of described the 3rd hysteresis comparator respectively with the control end of described switching tube Q1, the control end of described switching tube Q2, the control end of the control end of described switching tube Q3 and described switching tube Q4 links to each other, and the inverting input of described the 3rd hysteresis comparator is as the output of described saw-toothed wave generator.
- 4. according to claim 3 motor-driven control chip provided, it is characterized in that described switching tube Q1 and described switching tube Q3 are the N-type metal-oxide-semiconductor, described switching tube Q2 and described switching tube Q4 are P type metal-oxide-semiconductor.
- 5. according to claim 2 motor-driven control chip provided, it is characterized in that described charge pump comprises: switching tube Q5, switching tube Q6, switching tube Q7, capacitor C 2, capacitor C 3 and resistance R 1;Described switching tube Q5, described switching tube Q6, described switching tube Q7 and described resistance are in series, the first termination direct voltage VDD of described switching tube Q5, the points of common connection of described switching tube Q6 and described switching tube Q7 links to each other with the first end of described capacitor C 2, the equal ground connection of the second end of the second end of described capacitor C 2 and described capacitor C 3, the first end of described resistance R 1 links to each other with the first end of described capacitor C 3, and as described electric charge delivery side of pump.
- 6. according to claim 5 motor-driven control chip provided, it is characterized in that described switching tube Q5, described switching tube Q6 and described switching tube Q7 are the N-type metal-oxide-semiconductor.
- 7. according to claim 2 motor-driven control chip provided, it is characterized in that described initializing circuit comprises: NOR gate and switching tube Q8;Two inputs of described NOR gate are respectively as first input end and second input of described starting protection circuit; the output of described NOR gate links to each other with the control end of described switching tube Q8; the end of described switching tube Q8 links to each other with the preset reference signal, and the other end is as the output of described initializing circuit.
- 8. according to claim 7 motor-driven control chip provided, it is characterized in that described switching tube Q8 is P type metal-oxide-semiconductor.
- 9. according to claim 2 motor-driven control chip provided, it is characterized in that described saw-toothed wave generator is that frequency is the saw-toothed wave generator of 20kHz.
- 10. a DC Brushless Motor is characterized in that, comprises permanent magnet rotor and motor-driven control chip provided such as any one among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203973998U CN202818200U (en) | 2012-08-10 | 2012-08-10 | Motor control chip and DC brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203973998U CN202818200U (en) | 2012-08-10 | 2012-08-10 | Motor control chip and DC brushless motor |
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| Publication Number | Publication Date |
|---|---|
| CN202818200U true CN202818200U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203973998U Expired - Lifetime CN202818200U (en) | 2012-08-10 | 2012-08-10 | Motor control chip and DC brushless motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280969A (en) * | 2013-05-29 | 2013-09-04 | 曹国基 | Driving device based on dry-battery-powered intelligent product power utilization unit |
| CN106559018A (en) * | 2015-09-29 | 2017-04-05 | 上海路虹电子科技有限公司 | Numerical model analysis soft start DC Brushless Motor driving chip |
| CN106856391A (en) * | 2017-01-24 | 2017-06-16 | 上海能埔电子有限公司 | A kind of self calibration Sofe Switch motor-driven system |
| CN110608189A (en) * | 2019-11-05 | 2019-12-24 | 上海艾铭思汽车控制系统有限公司 | Fan control circuit and car seat fan |
| CN110870707A (en) * | 2018-08-31 | 2020-03-10 | 九阳股份有限公司 | Starting method of food processor and food processor |
| TWI771099B (en) * | 2021-07-12 | 2022-07-11 | 致新科技股份有限公司 | Motor controller |
| US11764709B2 (en) | 2021-07-15 | 2023-09-19 | Global Mixed-Mode Technology Inc. | Motor controller |
-
2012
- 2012-08-10 CN CN2012203973998U patent/CN202818200U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280969A (en) * | 2013-05-29 | 2013-09-04 | 曹国基 | Driving device based on dry-battery-powered intelligent product power utilization unit |
| CN106559018A (en) * | 2015-09-29 | 2017-04-05 | 上海路虹电子科技有限公司 | Numerical model analysis soft start DC Brushless Motor driving chip |
| CN106856391A (en) * | 2017-01-24 | 2017-06-16 | 上海能埔电子有限公司 | A kind of self calibration Sofe Switch motor-driven system |
| CN106856391B (en) * | 2017-01-24 | 2019-05-31 | 上海能埔电子有限公司 | A kind of self calibration Sofe Switch motor-driven system |
| CN110870707A (en) * | 2018-08-31 | 2020-03-10 | 九阳股份有限公司 | Starting method of food processor and food processor |
| CN110608189A (en) * | 2019-11-05 | 2019-12-24 | 上海艾铭思汽车控制系统有限公司 | Fan control circuit and car seat fan |
| CN110608189B (en) * | 2019-11-05 | 2024-03-15 | 上海艾铭思汽车控制系统有限公司 | Fan control circuit and automobile seat fan |
| TWI771099B (en) * | 2021-07-12 | 2022-07-11 | 致新科技股份有限公司 | Motor controller |
| US11764709B2 (en) | 2021-07-15 | 2023-09-19 | Global Mixed-Mode Technology Inc. | Motor controller |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210202 Address after: No. 1600, Zixing Road, Minhang District, Shanghai 200241 Patentee after: BCD (SHANGHAI) MICRO-ELECTRONICS Ltd. Address before: 200233 No. 800, Xuhui District, Shanghai, Yishan Road Patentee before: BCD Semiconductor Manufacturing Limited |
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Granted publication date: 20130320 |