TWM539091U - Motor assembly, application device, and sensor integrated circuit - Google Patents

Abstract

The present disclosure provides a motor assembly, an application device, and a sensor integrated circuit. The integrated circuit includes a rectifier, a power module, an output control circuit, and a detection circuit. The rectifier is configured for converting an outer power to a first DC power (direct current power). The power module includes a voltage regulator, for generating a second DC power which different from the first DC power. The second DC power provides power for at least part of the detection circuit. The detection circuit is configured to detect a detected signal inputted to the sensor integrated circuit, and feedback the detected signal and provide a corresponding control signal. The output control circuit is configured to at least respond to the control signal, to enable the sensor integrated circuit to work in at least one status of a first status of power flowing out of an output port and a second status of power flowing into the output port.

Description

Motor assembly, application equipment and sensor integrated circuit

The present invention relates to the field of electronic circuit technology, and in particular to a sensor integrated circuit.

Sensor integrated circuits are widely used in modern industrial and electronic products to detect the information being measured and to convert the detected information into electrical signals according to certain rules.

In the prior art, the sensor integrated circuit can usually only output the detection result, and a circuit needs to be disposed around the periphery to process the detection result. The present invention aims to expand the functions of the sensor integrated circuit in the prior art to reduce circuit cost and improve circuit reliability.

In one aspect, the invention provides a sensor integrated circuit, comprising: a housing, a semiconductor substrate disposed in the housing, an output port extending from the housing, an input port for connecting an external power source, and a semiconductor An electronic circuit on the substrate, the electronic circuit comprising: a rectifier, a power module, an output control circuit, and a detection circuit; wherein:

The rectifier is configured to convert the external power source into a first DC power source;

The power module includes a voltage regulator for generating a second DC power source different from the first DC power source;

The detection circuit is at least partially powered by the second DC power source for detecting a detected signal input to the sensor integrated circuit, and generating a corresponding control signal in response to the detected signal;

The output control circuit is configured to return at least the control signal such that the sensor integrated circuit flows at least a first state of current flowing from the output port to the outside and a second state of current flowing from the external device to the output port. Run below.

Preferably, the detecting circuit comprises a magnetic sensor for detecting and outputting a magnetic field sensing signal matched with an external magnetic field, and the control signal is the magnetic field sensing signal.

Preferably, the output voltage of the output control circuit is different from the second DC power supply.

Preferably, the output control circuit is powered by the first DC power source, and an average value of the power supply voltage of the output control circuit is greater than an average value of the second DC power source.

Preferably, the power module further includes a voltage regulator and a bandgap reference voltage source; wherein:

The voltage regulator is configured to stabilize the first DC power source to a lower third DC power source;

The bandgap reference voltage source is powered by the third DC power source to generate a reference voltage lower than the third DC power source;

The voltage regulator is powered by the first DC power source and generates the second DC power source based on the reference voltage.

Preferably, the second DC power source is smaller than the third DC power source.

Preferably, the output control circuit includes a first switch and a second switch, the first switch is connected to the output port in a first current path, and the second switch is connected to the output port in a direction opposite to the first current path In the second current path, the first switch and the second switch are selectively turned on under the control of the magnetic field sensing signal.

Preferably, the output control circuit has a first current path that flows outward from the output port, a second current path that flows in a current from the output port, and is connected to the first current path and the second current path. a switch in a path controlled by the magnetic field detection information outputted by the magnetic field detecting circuit such that the first current path and the second current path are selectively turned on.

Preferably, the first current path and the second current path have no switch in the other path.

Preferably, the magnetic sensor comprises:

a magnetic sensing element for sensing the polarity of an external magnetic field and outputting a telecommunication signal;

a signal processing unit for amplifying and deinterfering the electrical signal to generate an analog electrical signal;

An analog digital conversion unit for converting the analog signal into a logic high or logic low signal;

The power module further includes a reference signal generator for generating a reference voltage based on the reference voltage and providing the analog to digital conversion unit.

Preferably, the magnetic sensing element is powered by the second DC power source.

Preferably, the external power source is an AC power source, and the output control circuit is configured to enable the sensor integrated circuit to flow current at least from the output port to the outside based on the information of the AC power source and the magnetic field sensing signal. The state and the switching from the outside to the second state of the output current flowing into the current.

Preferably, the external power source is an AC power source, and the output control circuit is configured to make the sensor product when the magnetic field sensing signal indicates that the external magnetic field is the first magnetic polarity and the polarity of the AC power source is the first polarity. The body circuit operates in one of the first state and the second state, when the magnetic field sensing signal indicates that the external is a second magnetic polarity opposite to the first magnetic polarity and the polarity of the alternating current power source is opposite to the first polarity The second polarity of the sensor causes the sensor integrated circuit to operate in the first state and the second state.

Preferably, the external power source is an AC power source, and the output control circuit is configured to: when the AC power source is in a positive half cycle and the magnetic field sensing signal indicates that the external magnetic field is a first magnetic polarity, or the AC power source is a negative half cycle and the The magnetic field sensing signal indicates that the external magnetic field is a second magnetic polarity opposite to the first magnetic polarity, causing the output to flow through the load current; and when the alternating current power source is in a negative half cycle and the magnetic field sensing signal characterizes the external magnetic field The first magnetic polarity, or the alternating current power source is a positive half cycle and the magnetic field sensing signal indicates that the external magnetic field is the second magnetic polarity, so that the output 埠 no load current flows.

Another aspect of the present invention provides a motor assembly including: a motor and a motor drive circuit having the above-described sensor integrated circuit.

Preferably, the motor drive circuit further includes a double-conducting switch connected in series with the motor between the two ends of the external AC power source. The output of the sensor integrated circuit is connected to the control terminal of the two-way switch.

Preferably, the electric machine comprises a stator and a permanent magnet rotor, the stator comprising a stator core and a single-phase winding wound on the stator core.

Still another aspect of the present invention provides an application apparatus for a motor assembly having a motor and a motor drive circuit, the motor drive circuit having the above-described sensor integrated circuit.

Preferably, the application device is a pump, a fan, a household appliance or a vehicle.

The novel expands the internal functions of the existing sensor integrated circuit, which can reduce the circuit cost and improve the circuit reliability.

1 is a schematic structural view of a sensor integrated circuit of the new embodiment;

2 is a schematic structural view of a power module of the sensor integrated circuit of the new embodiment;

3 is a circuit diagram of an output control circuit of the sensor integrated circuit of the new embodiment;

4 is another circuit diagram of an output control circuit of the sensor integrated circuit of the new embodiment;

5 is another circuit diagram of an output control circuit of the sensor integrated circuit of the present embodiment;

5A is a schematic structural diagram of the output control circuit in a magnetic sensor integrated circuit provided by another embodiment of the present invention;

6 is a schematic structural view of a detecting circuit of a sensor integrated circuit of the present invention;

7 is a circuit diagram of a rectifier of a sensor integrated circuit of the present embodiment;

8 is a circuit structural diagram of a motor assembly according to an embodiment of the present invention;

Figure 9 is a structural view of a motor in a motor assembly of the present embodiment.

The above described objects, features and advantages of the present invention will become more apparent and understood.

Referring to FIG. 1 , a sensor integrated circuit provided by an embodiment of the present invention includes a housing, a semiconductor substrate disposed in the housing, an input port Pin and an output port Pout extending from the housing, and a semiconductor base. On-chip electronic circuitry. The input port Pin can be connected to an external power source, and the electronic circuit includes a rectifier 60, a power module 40, an output control circuit 30, and a detection circuit 20; wherein:

The rectifier 60 is configured to convert the external power source into a first DC power source;

The power module 40 is configured to generate the second DC power source different from the first DC power source. Preferably, the power module 40 includes a voltage regulator, and the voltage regulator can be powered by the first DC power source. And generating, by the voltage regulator, the second DC power source.

The detecting circuit 20 is at least partially powered by the second DC power source for detecting a predetermined detected detected signal input to the sensor integrated circuit, and generating a corresponding control signal in response to the detected signal.

The output control circuit 30 is configured to return at least the control signal such that the sensor integrated circuit flows at least in a first state in which current flows from the output port Pout to the outside and a second state in which current flows from the outside to the output port Pout. Run below.

In the present invention, the input 埠Pin is connected to the external power source, which includes the case where the input 埠Pin is directly connected to both ends of the external power source, and the case where the input 埠Pin and the external load are serially connected to the two ends of the external power source, the present invention Not limited, depending on the situation.

The sensor integrated circuit provided in this embodiment expands the internal functions of the existing sensor integrated circuit, thereby reducing the overall circuit cost and improving the circuit reliability.

Preferably, the detecting circuit 20 includes a magnetic sensor for detecting and outputting a magnetic field sensing signal matched with an external magnetic field, and the control signal is the magnetic field sensing signal.

When the detecting circuit 20 includes a magnetic sensor, the sensor integrated circuit of the novel embodiment can realize the function expansion of the existing magnetic sensor, reduce the overall circuit cost, and improve the circuit reliability.

Preferably, the supply voltage of the output control circuit 30 is different from the second DC power supply.

Preferably, as shown in FIG. 1, the output control circuit 30 is powered by the first DC power source. The detecting circuit 20 is powered by the second DC power source different from the first DC power source. It should be noted that, in the embodiment of the present invention, the first DC power source may be a power source with a varying amplitude or a frame. A constant DC power supply. The second DC power source is preferably a DC power source with stable amplitude to ensure a stable power signal for the detection circuit 20 to stabilize the operation.

Preferably, the average value of the first DC power source output by the rectifier 60 is greater than the average value of the second DC power source output by the power module 40. Using a smaller power supply to supply power to the detection circuit 20 can reduce the power consumption of the integrated circuit of the sensor. Using a larger power supply to supply the output control circuit 30 can provide a higher load current to the output 埠Pout to ensure the The sensor integrated circuit has sufficient driving capability.

Certainly, in a specific practical application, the power supply voltage of the output control circuit 30 is not necessarily limited to the first DC power supply. FIG. 1 is only an example, and may be determined according to a specific application environment thereof, both of which are in the present application. Within the scope of protection.

In a preferred embodiment, as shown in FIG. 2, the power module 40 further includes a voltage regulator 42 and a bandgap reference voltage source 43 on the basis of the voltage regulator 41; wherein:

The voltage regulator 42 is configured to stabilize the first DC power source to a lower third DC power source;

The bandgap reference voltage source 43 is powered by the third DC power source to generate a reference voltage lower than the third DC power source;

The voltage regulator 41 is powered by the first DC power source and generates the second DC power source based on the reference voltage.

In a specific example, the first DC power output from the rectifier 60 may be more than ten volts, the regulator 42 is connected to the first DC power output from the rectifier 60, and the first DC power supply is stabilized at a lower level. The third DC power source (eg, 3.5V); the third DC power source output by the regulator 42 supplies the bandgap reference voltage source 43 to generate a reference voltage (eg, 1.25V) lower than the third DC power source. The voltage regulator 41 generates the second DC power source (for example, 2.5 V) based on the reference voltage. The second DC power source can be greater than the reference voltage and less than the third DC power source. The voltage regulator 41 is powered by a relatively high first DC power source, which can improve the overall response speed of the integrated circuit.

In a preferred embodiment, the output control circuit 30 includes a first switch 31 and a second switch 32. The first switch 31 is connected to the output port Pout in the first current path, and the second switch 32 is connected to the output port Pout. The second current path of the first current path is opposite in direction, and the first switch 31 and the second switch 32 are selectively turned on under the control of the magnetic field sensing signal. Preferably, the first switch 31 can be a triode, and the second switch 32 can be a diode or a triode. The present invention is not limited thereto, as the case may be.

Specifically, in a specific implementation, as shown in FIG. 3, the first switch 31 and the second switch 32 are a pair of complementary semiconductor switches. The first switch 31 is turned on at a low level, and the second switch 32 is turned on at a high level, wherein the first switch 31 and the output port Pout are connected in the first current path, and the second switch 32 is connected to the output port Pout. In the two current paths, the control ends of the two switches of the first switch 31 and the second switch 32 are connected to the magnetic sensor, and the current input end of the first switch 31 is connected to a higher voltage (for example, a DC power supply), and the current output end is The current input of the second switch 32 is connected, and the current output of the second switch 32 is connected to a lower voltage (for example, ground). If the magnetic field detection information output by the magnetic sensor is low level, the first switch 31 is turned on, the second switch 32 is turned off, and the load current flows out from the higher voltage through the first switch 31 and the output port Pout, if The magnetic field detection information outputted by the magnetic sensor is a high level, the second switch 32 is turned on, the first switch 31 is turned off, and the load current flows from the outside into the output port Pout and flows through the second switch 32. In the example of FIG. 3, the first switch 31 is a positive channel metal oxide semiconductor field effect transistor (P-type MOSFET), and the second switch 32 is a negative channel metal oxide semiconductor field effect transistor (N-type MOSFET). It can be understood that in other embodiments, the first switch and the second switch may also be other types of semiconductor switches, such as a junction field effect transistor (JFET) or a metal semiconductor field effect transistor (MESFET). Field effect transistor.

As another specific implementation, as shown in FIG. 4, the first switch 31 is a high-level switch tube, and the second switch 32 is a single-conductor diode, the control end of the first switch 31 and the second switch 32. The cathode is connected to the magnetic field detecting circuit 20. The current input terminal of the first switch 31 is connected to the output terminal of the rectifier 60, and the current output terminal of the first switch 31 and the anode of the second switch 32 are connected to the output port Pout. Wherein, the first switch 31 and the output port Pout are connected in the first current path, and the output port Pout, the second switch 32 and the magnetic sensor are connected in the second current path, if the magnetic sensor outputs The magnetic field detection information is high level, the first switch 31 is turned on, the second switch 32 is turned off, and the load current flows out from the second power source 50 through the first switch 31 and the output port Pout, if the magnetic field output by the magnetic sensor The detection information is low, the second switch 32 is turned on, the first switch 31 is turned off, and the load current flows from the outside into the output port Pout and flows through the second switch 32. It is to be understood that, in other embodiments of the present invention, the first switch 31 and the second switch 32 may be other structures, which are not limited by the present invention, as the case may be.

In another embodiment of the present invention, the output control circuit 30 has a first current path that flows outward from the output port, a second current path that flows inward from the output port, and is coupled to the first current. And a switch in one of the path and the second current path, the switch being controlled by the magnetic field detection information outputted by the magnetic field detecting circuit, such that the first current path and the second current path are selectively turned on. Preferably, the first current path and the second current path have no switch in the other path.

As a specific implementation, as shown in FIG. 5, the unidirectional conduction switch 33 and the output 埠Pout are connected in the first current path, and the current input end thereof is connected to the output end of the magnetic sensor, and the magnetic sensor is The output terminal can also be connected to the output 埠Pout via the resistor R1 in the second current path opposite to the direction of the first current path. The one-way switch 33 is turned on when the magnetic field induction signal is at a high level, and the load current flows out through the one-way switch 33 and the output 埠Pout. When the magnetic field induction signal is low, the one-way switch 33 is disconnected, and the load current is The output 埠Pout flows from the outside and flows through the resistor R1 and the magnetic field detecting circuit 20.

As an alternative, the resistor R1 in the second current path can also be replaced with another one-way switch in anti-parallel with the one-way switch 33. Thus, the load current flowing from the output port and the load current flowing in are balanced.

In another specific implementation, as shown in FIG. 5A, the output control circuit 30 includes diodes D1 and D2 that are connected in series between the output of the magnetic field detecting circuit 20 and the output 埠Pout, and the diodes connected in series. A resistor R1 in parallel with D1 and D2, and a resistor R2 connected between the common terminal of the diodes D1 and D2 and the power source Vcc, wherein the cathode of the diode D1 is connected to the output terminal of the magnetic field detecting circuit 20. The diode D1 is controlled by the magnetic field detection information. When the magnetic field detection information is high, the diode D1 is turned off, and the load current flows out from the output 埠Pout through the resistor R2 and the diode D2. When the magnetic field detection information is low, the load current flows from the outside to the output 埠Pout and It flows through the resistor R1 and the magnetic field detecting circuit 20.

In an embodiment of the present invention, as shown in FIG. 6, the detecting circuit 20 includes a magnetic sensor, the magnetic sensor includes: a magnetic sensing element 21 for sensing the polarity of an external magnetic field and outputting a signal; signal processing The unit 22 is configured to perform amplification and de-interference processing on the electrical signal to generate an analog electrical signal. The analog digital conversion unit 23 is configured to convert the analogized electrical signal after the amplification and de-interference into the magnetic field sensing signal, for only identifying For the application of the magnetic field polarity of the external magnetic field, the magnetic field sensing signal can be a switching type digital signal. Preferably, the power module 40, as shown in FIG. 2, further includes a reference signal generator 44 for generating a reference voltage based on the reference voltage and providing the analog voltage conversion unit.

In a preferred embodiment, the external power source is an AC power source, and the function of the output control circuit 30 can be configured to: at least the self-output of the sensor integrated circuit based on the information of the AC power source and the magnetic field sensing signal The first state in which the 埠Pout flows out to the outside and the second state in which the current flows from the outside to the output 埠Pout are switched. It should be noted that, in the new embodiment, the sensor integrated circuit switches between the first state and the second state, and is not limited to the case where one state is switched to another state immediately after the end of one state, and one of them is included. A situation in which the state is switched to another state after a certain period of time. In a preferred application example, the output of the sensor integrated circuit during the interval between the two states switches has no output.

In a specific practical application, the sensor integrated circuit has a first state in which current flows from the output port Pout to the outside and a second state in which current flows from the outside to the output port Pout, and the output control circuit 30 is configured to The magnetic field sensing signal indicates that the external magnetic field is the first magnetic polarity and the polarity of the alternating current power source is the first polarity, and the sensor integrated circuit is operated in one of the first state and the second state, when the magnetic field The sensing signal indicates that the external portion is a second magnetic polarity opposite to the first magnetic polarity, and when the polarity of the alternating current power source is a second polarity opposite to the first polarity, the sensor integrated circuit is operated at the first One state and the second state, another state.

More specifically, the output control circuit 30 can be configured to indicate that the AC power source is a positive half cycle and the magnetic field sensing signal indicates that the external magnetic field is a first magnetic polarity, or the AC power source is a negative half cycle and the magnetic field sensing signal characterizes the When the external magnetic field is the second magnetic polarity opposite to the first magnetic polarity, the output 埠Pout flows through the load current; and when the alternating current power source is in a positive half cycle and the magnetic field sensing signal indicates that the external magnetic field is the second magnetic polarity, Or when the AC power source is in a negative half cycle and the magnetic field sensing signal indicates that the external magnetic field is the first magnetic polarity, the output 埠Pout flows without load current. It is worth noting that when the AC power source is in the positive half cycle and the external magnetic field is the first magnetic polarity, or the AC power source is in the negative half cycle and the external magnetic field is the second magnetic polarity, the output 埠 flowing through the load current includes both cases. In the whole duration, the output 埠 has a load current flowing through, and also includes the case where the output 埠 has a load current flowing only in a part of the time period.

Based on any of the above embodiments, in a specific embodiment of the present invention, the rectifier includes: a full-wave rectifier bridge and a voltage stabilizing unit connected in series with an output of the full-wave rectifier bridge, wherein the full-wave rectifier bridge The alternating current outputted by the alternating current power source is converted into direct current, and the voltage stabilizing unit is configured to stabilize the direct current outputted by the full-wave rectifier bridge within a preset value range.

FIG. 7 shows a specific circuit of the rectifier, wherein the voltage stabilizing unit comprises a voltage stabilizing diode 621 connected between two output ends of the full-wave rectifier bridge, the full-wave rectifier bridge comprising: a first in series The diode 611 and the second diode 612 and the third diode 613 and the fourth diode 614 connected in series; the common end of the first diode 611 and the second diode 612 and the first input 埠 VAC+ Electrical connection; the common ends of the third diode 613 and the fourth diode 614 are electrically connected to the second input port VAC-.

The input end of the first diode 611 is electrically connected to the input end of the third diode 613 to form a ground output end of the full-wave rectifier bridge, and the output end of the second diode 612 and the fourth diode 614. The output terminal is electrically connected to form a voltage output terminal VDD of the full-wave rectifier bridge, and the voltage stabilizing diode 621 is connected to the common terminal of the second diode 612 and the fourth diode 614 and the first diode 611 and the Between the common ends of the triplets 613. It should be noted that, in the new embodiment, the power terminal of the output control circuit can be electrically connected to the voltage output end of the full-wave rectifier bridge.

The magnetic sensor integrated circuit provided by the new embodiment will be described below in conjunction with a specific application.

As shown in FIG. 8 , the present embodiment further provides a motor assembly including: a motor 200 powered by an AC power source 100, a double-conducting switch 300 connected in series with the motor 200, and any of the above implementations according to the present invention. In the magnetic sensor integrated circuit 400 provided by the example, the output 埠 of the magnetic sensor integrated circuit 400 is electrically connected to the control terminal of the bidirectional switch 300. Preferably, the double-conducting switch 300 can be a three-terminal bidirectional controllable switch (TRIAC). It can be understood that the double-conducting switch can also be implemented by other types of suitable switches, for example, two reverse-controlled parallel-controlled rectifiers can be included, and corresponding control circuits are provided, and the output signal according to the output of the magnetic sensor integrated circuit is The control circuit controls the two controlled rectifiers in a predetermined manner.

Preferably, the motor assembly further includes a step-down circuit 500 for stepping down the AC power source 100 to the magnetic sensor integrated circuit 400. The magnetic sensor integrated circuit 400 is mounted close to the rotor of the motor 200 to sense the change in the magnetic field of the rotor.

In a specific embodiment of the present invention, the motor is a synchronous motor. It can be understood that the driving circuit of the present invention is applicable not only to synchronous motors but also to other types of permanent magnet motors such as DC brushless motors. As shown in Fig. 9, the synchronous machine includes a stator and a rotor 11 rotatable relative to the stator. The stator has a stator core 12 and stator windings 16 wound around the stator core 12. The stator core 12 can be made of soft magnetic materials such as pure iron, cast iron, cast steel, electrical steel, and niobium steel. The rotor 11 has permanent magnets. When the stator windings 16 are connected in series with an alternating current source, the rotor 11 operates at a constant speed of 60 f/p turns per minute in a steady state, where f is the frequency of the alternating current source and p is the number of pole pairs of the rotor. In the present embodiment, the stator core 12 has two opposite pole portions 14. Each pole portion has a pole arc surface 15, and the outer surface of the rotor 11 is opposed to the pole arc surface 15 to form a substantially uniform air gap therebetween. The substantially uniform air gap referred to in the present application is that a large air gap is formed between the designated sub-machine and the rotor, and only a small portion is a non-uniform air gap. Preferably, the pole arc surface 15 of the stator pole portion is provided with a concave starting groove 17, and the portion of the pole arc surface 15 other than the starting groove 17 is concentric with the rotor. The above configuration can form a non-uniform magnetic field, ensuring that the pole axis S1 of the rotor is inclined at an angle with respect to the central axis S2 of the stator pole portion when stationary, allowing the rotor to have a starting torque each time the motor is energized by the integrated circuit. The pole axis S1 of the rotor refers to a boundary line between poles having different polarities of the rotor, and the central axis S2 of the stator pole portion 14 refers to a line passing through the center of the pole portions 14 of the stator. In this embodiment, both the stator and the rotor have two magnetic poles. It will be appreciated that in further embodiments, the number of poles of the stator and rotor may also be unequal and have more poles, such as four, six, and the like.

In a preferred embodiment of the present invention, the double-conducting switch 300 uses a three-terminal bidirectional controllable switch (TRIAC), the rectifier adopts the circuit shown in FIG. 7, and the output control circuit adopts the circuit shown in FIG. 4, and the output control circuit The current input end of the first switch 31 is connected to the voltage output end of the full-wave rectifier bridge, and the current output end of the second switch 32 is connected to the ground output end of the full-wave rectifier bridge. When the signal output by the AC power source 100 is in the positive half cycle and the detection circuit 20 outputs a low level, the first switch 31 in the output control circuit 30 is turned on and the second switch 32 is turned off, and the current flows through the AC power source 100, the motor 200, and the product in sequence. a first input terminal of the body circuit 400, a step-down circuit, a second diode 612 output of the full-wave rectifier bridge, and a first switch 31 of the output control circuit 30, returning from the output turbulence to the bidirectional switch 300 to return to the AC power source 100. After the TRIAC 300 is turned on, the series branch formed by the step-down circuit 500 and the magnetic sensor integrated circuit 400 is short-circuited, and the magnetic sensor integrated circuit 400 stops outputting due to no supply voltage, and the TRIAC 300 flows through its two anodes. The current between them is large enough (higher than its holding current), and the TRIAC300 remains conductive when there is no drive current between the gate and its first anode. When the signal output by the AC power source 100 is in the negative half cycle and the detection circuit 20 outputs a high level, the first switch 31 in the output control circuit 30 is turned off and the second switch 32 is turned on, and the current flows out from the AC power source 100, since the double-conducting switch 300 After flowing into the output port, the second switch 32 of the output control circuit 30, the ground output terminal of the full-wave rectifier bridge, the first diode 611, the first input terminal of the integrated circuit 400, and the motor 200 are returned to the AC power source 100. Similarly, after the TRIAC 300 is turned on, the magnetic sensor integrated circuit 400 is short-circuited to stop the output short circuit, and the TRIAC 300 can be kept turned on. When the signal output by the AC power source 100 is in the positive half cycle and the detection circuit 20 outputs a high level, or the signal output from the AC power source 100 is in the negative half cycle and the detection circuit 20 outputs a low level, the first switch 31 in the output control circuit 30 and The second switch 32 cannot be turned on, and the TRIAC 300 is turned off. Thus, the output control circuit 30 can cause the sensor integrated circuit to control the bidirectional switch 300 to switch between the on and off states in a predetermined manner based on the polarity change of the alternating current power source 100 and the magnetic field detection information, thereby controlling the stator winding. The energization mode of 16 causes the variable magnetic field generated by the stator to match the magnetic field position of the rotor, and only rotates the rotor in a single direction, thereby ensuring that the rotor has a fixed rotation direction each time the motor is energized.

In a motor assembly according to another embodiment of the present invention, the motor may be connected in series with the double-conducting switch between the two ends of the external AC power source, and the first series branch and the step-down circuit and the magnetic sensor formed by the motor and the double-conducting switch are connected in series. The second series branch formed by the integrated circuit is connected in parallel. The output of the magnetic sensor integrated circuit is connected to the double-conducting switch, and the control bidirectional switch is switched between the on and off states in a predetermined manner to control the energization mode of the stator winding.

The motor assembly provided by the above-mentioned embodiments of the present invention is particularly suitable for use in, but not limited to, pumps, fans, household appliances, vehicles, etc., such as washing machines, dishwashers, range hoods, exhaust fans, etc. .

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the novel technical solutions by using the methods and technical contents disclosed above, or modify the equivalents of equivalent changes without departing from the scope of the novel technical solutions. Example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical spirit of the present invention are still within the scope of protection of the present technical solutions.

60‧‧‧Rectifier

40‧‧‧Power Module

30‧‧‧Output control circuit

20‧‧‧Detection circuit

Pin‧‧‧ Input埠

Pout‧‧‧ Output埠

41‧‧‧Regulator

42‧‧‧Regulator

43‧‧‧Band-gap voltage source

31‧‧‧First switch

32‧‧‧Second switch

50‧‧‧second power supply

33‧‧‧One-way switch

22‧‧‧Signal Processing Unit

23‧‧‧ analog digital conversion unit

44‧‧‧Reference signal generator

621‧‧‧Regulators

611‧‧‧First Diode

612‧‧‧second diode

613‧‧‧ Third Dipole

614‧‧‧Fourth dipole

400‧‧‧Sensor integrated circuit

100‧‧‧AC power supply

200‧‧‧ motor

300‧‧‧Double-way switch

500‧‧‧Buck circuit

11‧‧‧Rotor

12‧‧‧ Stator core

16‧‧‧ stator winding

14‧‧‧ extremely

15‧‧‧ pole arc

17‧‧‧Starting slot

D1, D2‧‧‧ diode

Vcc‧‧‧ power supply

R1, R2‧‧‧ resistance

S1‧‧‧ polar axis

S2‧‧‧ central axis

60‧‧‧Rectifier

40‧‧‧Power Module

30‧‧‧Output control circuit

20‧‧‧Detection circuit

Pin‧‧‧ Input埠

Pout‧‧‧ Output埠

Claims (18)

A sensor integrated circuit, the improvement comprising: a housing, a semiconductor substrate disposed in the housing, an output port extending from the housing, an input port for connecting an external power source, and a semiconductor base An on-chip electronic circuit, the electronic circuit comprising: a rectifier, a power module, an output control circuit, and a detection circuit; wherein:
The rectifier is configured to convert the external power source into a first DC power source;
The power module includes a voltage regulator for generating a second DC power source different from the first DC power source;
The detection circuit is at least partially powered by the second DC power source for detecting a detected signal input to the sensor integrated circuit, and generating a corresponding control signal in response to the detected signal;
The output control circuit is configured to return at least the control signal such that the sensor integrated circuit flows at least a first state of current flowing from the output port to the outside and a second state of current flowing from the external device to the output port. Run below. The sensor integrated circuit of claim 1, wherein the detecting circuit comprises a magnetic sensor for detecting and outputting a magnetic field sensing signal matched with an external magnetic field, wherein the control signal is the magnetic field sensing Signal. The sensor integrated circuit of claim 2, wherein the output control circuit has a different supply voltage than the second DC power supply. The sensor integrated circuit of claim 3, wherein the output control circuit is powered by the first DC power source, and an average value of a supply voltage of the output control circuit is greater than an average of the second DC power source. value. The sensor integrated circuit of claim 2, wherein the power module further comprises a voltage regulator and a bandgap reference voltage source; wherein:
The voltage regulator is configured to stabilize the first DC power source to a lower third DC power source;
The bandgap reference voltage source is powered by the third DC power source to generate a reference voltage lower than the third DC power source;
The voltage regulator is powered by the first DC power source and generates the second DC power source based on the reference voltage. The sensor integrated circuit of claim 5, wherein the second direct current power source is smaller than the third direct current power source. The sensor integrated circuit of claim 2, wherein the output control circuit comprises a first switch and a second switch, the first switch being connected to the output port in the first current path, the The second switch is connected to the output port in a second current path opposite to the direction of the first current path, and the first switch and the second switch are selectively turned on under the control of the magnetic field sensing signal. The sensor integrated circuit of claim 2, wherein the output control circuit has a first current path that flows outward from the output port, and a second current that flows inward from the output port. And a switch connected to one of the first current path and the second current path, the switch being controlled by the magnetic field detection information output by the magnetic field detecting circuit such that the first current path and the second current path are selectively turned on. The sensor integrated circuit of claim 5, wherein the magnetic sensor comprises:
a magnetic sensing element for sensing the polarity of an external magnetic field and outputting a telecommunication signal;
a signal processing unit for amplifying and deinterfering the electrical signal to generate an analog electrical signal;
An analog digital conversion unit for converting the analog signal into a logic high or logic low signal;
The power module further includes a reference signal generator for generating a reference voltage based on the reference voltage and providing the analog to digital conversion unit. The sensor integrated circuit of claim 8, wherein the first current path and the second current path have no switch in the other path. The sensor integrated circuit of claim 2, wherein the external power source is an alternating current power source, and the output control circuit is configured to enable the sensor based on the information of the alternating current power source and the magnetic field sensing signal. The integrated circuit switches operation between at least a first state in which current flows from the output port to the outside and a second state in which current flows from the outside to the output port. The sensor integrated circuit of claim 2, wherein the external power source is an alternating current power source, and the output control circuit is configured to indicate that the external magnetic field is the first magnetic polarity and the alternating current when the magnetic field sensing signal When the polarity of the power source is the first polarity, the sensor integrated circuit is operated in one of the first state and the second state, and when the magnetic field sensing signal indicates that the external portion is opposite to the first magnetic polarity When the polarity of the two magnetic polarities is the second polarity opposite to the first polarity, the sensor integrated circuit is operated in the first state and the second state. The sensor integrated circuit of claim 2, wherein the external power source is an alternating current power source, the output control circuit is configured to indicate that the alternating current power source is a positive half cycle and the magnetic field sensing signal characterizes the external magnetic field When the first magnetic polarity is, or the alternating current power source is a negative half cycle and the magnetic field sensing signal indicates that the external magnetic field is a second magnetic polarity opposite to the first magnetic polarity, the output is caused to flow through the load current; and when When the AC power source is in a negative half cycle and the magnetic field sensing signal indicates that the external magnetic field is the first magnetic polarity, or the AC power source is in a positive half cycle and the magnetic field sensing signal indicates that the external magnetic field is the second magnetic polarity, the output is not The load current flows. A motor assembly, the improvement comprising: a motor and a motor drive circuit having the sensor integrated circuit of any one of claims 1 to 13. The motor assembly of claim 14, wherein the motor drive circuit further comprises a double-conducting switch connected in series with the motor between the two ends of the external AC power source; wherein: the output of the sensor integrated circuit Connected to the control terminal of the double-conducting switch. The motor assembly of claim 14, wherein the motor comprises a stator and a permanent magnet rotor, the stator comprising a stator core and a single-phase winding wound on the stator core. An application device of a motor assembly is improved in that the motor assembly has a motor and a motor drive circuit having a sensor integrated circuit as described in any one of claims 1 to 13. The application device of claim 17, wherein the application device is a pump, a fan, a home appliance, or a vehicle.