DE202016104302U1 - Magnetic sensor integrated circuit and motor assembly - Google Patents

Abstract

A magnetic sensor integrated circuit (400) for controlling a motor (200) comprising: a housing, a semiconductor substrate disposed in the housing, an electronic circuit disposed on the semiconductor substrate, and input terminals (A1, A2) and an output terminal (Pout) extending from the housing, the electronic circuit comprising: a magnetic field detection circuit (20) adapted to detect a magnetic field of a rotor (11) of the motor and to output magnetic field detection information; and an output control circuit (30) comprising a first switch (31) and a second switch (32), wherein the first switch (31) and the output terminal (Pout) are connected in a first current path, the second switch (32) and the output terminal (Pout) is connected in a second current path having a direction opposite to that of the first current path, and the first switch (31) and the second switch (32) are selectively turned on based on the magnetic field detection information to make an excitation mode of the motor ( 200).

Description

area

The present disclosure relates to the field of magnetic field detection, and more particularly to a magnetic sensor integrated circuit.

background

Magnetic sensors are widely used in modern industry and electronic products for measuring physical parameters such as current, position and direction by measuring the magnetic field strength. The motor industry is an important area of application of the magnetic sensor. The magnetic sensor is used to detect a polarity position of a rotor in an electric motor.

According to the conventional technology, the magnetic sensor can generally only output a result of magnetic field detection, and in practice, an external circuit is additionally required to process the magnetic field detection result, so the general cost of the circuit is high and the reliability is poor.

Short illustration

In one aspect, according to an embodiment of the present disclosure, there is provided a magnetic sensor integrated circuit for controlling a motor including a housing, a semiconductor substrate disposed in the housing, an electronic circuit disposed on the semiconductor substrate, and input terminals and output terminals extending from the housing extend, has. The electronic circuit includes a magnetic field detection circuit configured to detect a magnetic field of a rotor of the motor and to output magnetic field detection information; and an output control circuit comprising a first switch and a second switch, wherein the first switch and the output terminal are connected in a first current path, the second switch and the output terminal are connected in a second current path having a direction opposite to the first current path and the first switch and the second switch are selectively turned on based on the magnetic field detection information to control an energization mode of the motor.

Preferably, the output control circuit may comprise a push-pull output circuit, the first switch and the second switch may be a pair of complementary semiconductor switches, a current input terminal of the first switch may be connected to a high voltage, a current output terminal of the second switch may be connected to a low voltage, Control terminals of the first switch and the second switch may each be connected to an output terminal of the magnetic field detection circuit, and a common terminal of the first switch and the second switch may be connected to the output terminal.

Preferably, the magnetic field detection circuit may be powered by a first power supply, and the output control circuit may be powered by a second power supply that is different from the first power supply.

Preferably, an average of the output voltage of the first power supply may be smaller than that of an output voltage of the second power supply.

Preferably, the input terminals may have an input terminal configured to connect an external AC power supply to the magnetic sensor integrated circuit, and the output control circuit may be configured to switch the integrated circuit between a first state based on a polarity of the AC power supply and the magnetic field detection information; in which the first current path is turned on and a second state in which the second current path is turned on.

Optionally, the output control circuit may be configured to control the integrated circuit, based at least on the magnetic field detection information, to switch immediately between a first state in which the first current path is turned on and a second state in which the second current path is turned on ,

Optionally, the output control circuit may be configured to control the integrated circuit, based at least on the magnetic field detection information, to switch immediately either to a first state in which the first current path is turned on or to a second state in which the second current path is turned on after the other state has ended for a period of time.

Preferably, the output control circuit may be configured to control that a load current flows through the output terminal if the AC power supply is in one is positive half-wave and a magnetic field polarity of the rotor is a first polarity, or if the AC power supply is in a negative half-wave and a magnetic field polarity of the rotor is a second polarity that is opposite to the first polarity, or to control that no load current through the output terminal flows through, if the AC power supply is in a positive half-wave and magnetic field polarity of the rotor is a second polarity, or if the AC power supply is in a negative half-wave and a magnetic field polarity of the rotor is a first polarity, which is opposite to the second polarity.

Optionally, the output control circuit may be configured to control that a current is continuously flowing through the output terminal if the AC power supply is in a positive half-wave and a magnetic field polarity of the rotor is the first polarity, or if the AC power supply is in a negative half-wave and one Magnetic field polarity of the rotor is the second polarity.

Optionally, the output control circuit may be configured to control that current flows through the output terminal for a portion of the time if the AC power supply is in a positive half-wave and a magnetic field polarity of the rotor is the first polarity, or if the AC power supply is in a negative Half-wave is and a magnetic field polarity of the rotor is the second polarity.

Optionally, the magnetic field detection circuit may be powered by a same DC power supply as the output control circuit.

In another aspect, a motor assembly is provided in accordance with an embodiment of the present disclosure that includes a motor and a motor driver circuit having the magnetic sensor described above.

Preferably, the motor drive circuit may further include a bidirectional switch connected in series with the motor via the external AC power supply, and the output terminal of the magnetic sensor integrated circuit may be connected to a control terminal of the bidirectional switch.

Preferably, the motor may comprise a stator and a permanent magnet rotor, and the stator may comprise a stator core and a single phase winding wound around the stator core.

Preferably, the motor may be a single-phase permanent magnet synchronous motor, the rotor may comprise at least one permanent magnet, wherein an uneven magnetic path between the stator and the rotor may be formed so that an inclination angle between a pole axis of the permanent magnet rotor and a central axis of the stator may exist, when the permanent magnet rotor is at rest and the rotor can operate at a constant rotational speed of 60 f / p rpm in a steady-state phase after the stator winding has been turned on, f being a frequency of the ac power supply and p being the number of pole pairs of the rotor ,

Preferably, the motor assembly may further include a voltage dropper configured to reduce a voltage of the AC power supply and to provide the reduced voltage to the magnetic sensor integrated circuit.

Preferably, the output control circuit of the magnetic sensor integrated circuit may be configured to turn on the bidirectional switch if the AC power supply ( 70 . 100 ) is in a positive half-wave and a magnetic field polarity of the rotor is a first polarity, or if the AC power supply is in a negative half-wave and a magnetic field polarity of the rotor is a second polarity that is opposite to the first polarity, and turn off the bidirectional switch if the AC power supply is in a negative half-wave and a magnetic field polarity of the rotor is the first polarity, or if the AC power supply is in a positive half-wave and a magnetic field polarity of the rotor is the second polarity that is opposite to the first polarity.

Preferably, the output control circuit may be configured to control that a current flows from the output terminal to the bidirectional switch if a signal output from the AC power supply is in a positive half-wave and the magnetic field of the rotor has the first polarity and to control that Current flows from the bidirectional switch to the output terminal if the signal output from the AC power supply is in a negative half-wave and the magnetic field of the rotor has the second polarity.

The magnetic sensor integrated circuit according to the present disclosure expands the functions of existing magnetic sensors. The overall cost is reduced and the circuit reliability is improved.

Brief description of the drawings

The drawings used in the description of the embodiments of the disclosure or of the conventional technology will be briefly described below, so that the technical solutions according to the embodiments of the present disclosure or the conventional technology become more apparent. It will be understood that in the following drawings only a few embodiments are shown. Those skilled in the art will recognize that on the basis of these drawings, further drawings can be made without creative intervention.

1 FIG. 10 is a schematic structural diagram of a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG.

2 FIG. 10 is a schematic structural diagram of an electronic circuit in a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG.

3 FIG. 10 is a schematic structural diagram of an output control circuit in a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG.

3A shows a specific implementation of the output control circuit in 3 ;

4 FIG. 10 is a schematic structural diagram of an output control circuit in a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG.

5 FIG. 10 is a schematic structural diagram of a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG.

6 FIG. 10 is a schematic structural diagram of a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG.

7 FIG. 10 is a schematic structural diagram of a rectifier circuit in a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG.

8th FIG. 10 is a schematic structural diagram of a magnetic field detection circuit in a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG.

9 FIG. 10 is a module diagram of a motor assembly according to an embodiment of the present disclosure; FIG. and

10 FIG. 10 is a schematic structural diagram of an engine in a motor assembly according to an embodiment of the present disclosure. FIG.

Detailed description

The technical solutions according to embodiments of the present disclosure are described below clearly and completely in conjunction with the drawings according to embodiments of the present disclosure. It will be understood that the described embodiments are but few instead of all embodiments of the invention. All other embodiments that may be obtained by those skilled in the art without creative effort based on the embodiments according to the present disclosure are within the scope of the present disclosure.

In the following descriptions, specific details are set forth for a full understanding of the present disclosure, but the present disclosure may be implemented in other ways, other than as described herein. Similar extensions may be made by those skilled in the art without departing from the spirit of the present disclosure, and therefore, the disclosure is not limited to the particular embodiments disclosed below.

Hereinafter, a magnetic sensor integrated circuit according to embodiments of the disclosure will be illustrated by using the example of a magnetic sensor integrated circuit applied to a motor.

As in 1 As shown, a magnetic sensor integrated circuit according to an embodiment of the disclosure is provided which includes a housing 2 , a semiconductor substrate (not in FIG 1 an electronic circuit disposed on the semiconductor substrate and having input terminals A1 and A2 and an output terminal Pout extending from the housing. The electronic circuit includes:
a magnetic field detection unit 20 which is configured to detect a magnetic field of a rotor of the motor and to output a magnetic field detection information; and
an output control circuit 30 comprising a first switch and a second switch, wherein the first switch and the output terminal are connected in a first current path, the second switch and the output terminal are connected in a second current path having a direction opposite to that of the first current path, and wherein the first switch and the second switch are selectively based on the Magnetic field detection information can be turned on to control an energization mode of the motor. In the embodiment of the present disclosure, the first current path and the second current path have completely identical characteristics, which are not limited thereto, and may have different characteristics as long as currents having different directions flow through the output terminal.

In one embodiment of the disclosure, as in FIG 2 is shown, the magnetic field detection circuit 20 through a first power supply 40 fed, and the output control circuit 30 is through a second power supply 50 fed, which are different to the first power supply 40 is. Preferably, the first power supply 40 a DC power supply with a constant amplitude and the second power supply 50 may be a variable amplitude DC power supply or a constant amplitude DC power supply. An average of an output voltage of the first power supply 40 is smaller than an output voltage of the second power supply 50 , By supplying the magnetic field detection circuit 20 with a low power power supply, the power consumption of the integrated circuit is reduced and by the supply of the output control circuit 30 with a high power power supply, the output port is controlled to provide a high load current to ensure that the integrated circuit has sufficient drive capability. It can be seen that the magnetic field detection circuit 20 in other embodiments, by a DC power supply as the output control circuit 30 can be fed.

In one embodiment of the present disclosure, as in 3 1, the output control circuit has a push-pull output circuit, and the first switch 31 and the second switch 32 are a pair of complementary semiconductor switches. A current input terminal of the first switch is connected to a high voltage, and a current output terminal of the second switch 32 is connected to a low voltage. Control terminals of the first switch 31 and the second switch 32 are each connected to an output terminal of the magnetic field detection circuit, and a common terminal of the first switch and the second switch is connected to the output terminal Pout.

At the in 3A Example case shown are the first switch 31 and the second switch 32 a pair of complementary metal oxide semiconductor field effect transistors (MOSFET). The first switch 31 is a P-type MOSFET, which is turned on at a low level, and the second switch 32 is an N-type MOSFET which is turned on at a high level. The first switch 31 and the output terminal Pout are connected in the first current path. The second switch 32 and the output terminal Pout are connected in the second current path. The control terminals of the first switch 31 and the second switch 32 Both are with the magnetic field detection circuit 20 connected. The current input terminal of the first switch 31 is connected to a high voltage (for example the second power supply). The current output terminal of the first switch 31 is with the current input terminal of the second switch 32 connected. The current output terminal of the second switch 32 is connected to a low voltage (grounding, for example). If the magnetic field detection information supplied by the magnetic field detection circuit 20 is output, is a low level, is the first switch 31 switched on and the second switch 32 is off, leaving a load current to the outside of the integrated circuit through the first switch 31 and the output terminal Pout flows. If the magnetic field detection information output from the magnetic field detection circuit is a high level, the second switch is 32 turned on and the first switch 31 is off, so that the load current from outside the integrated circuit to the output terminal Pout through the second switch 32 flows.

It will be appreciated that the first switch and the second switch may be other types of semiconductor switches in further embodiments, such as junction field effect transistors (JEFT) or metal-semiconductor field effect transistors (MESFETs).

In other embodiments of the present disclosure, as shown in FIG 4 shown, the first switch 31 a switch transistor which is turned on at a high level, the second switch 32 is a unidirectional diode and the control terminal of the first switch 31 and a cathode of the second switch 32 are with the magnetic field detection circuit 20 connected. The current input terminal of the first switch 31 is with the second power supply 50 connected and the current output terminal of the first switch 31 and an anode of the second switch 32 are each connected to the output terminal Pout. The first switch 31 and the output terminal Pout are connected in the first current path and the output terminal Pout, the second switch 32 and the magnetic field detection circuit 20 are connected in the second current path. If the magnetic field detection information supplied by the magnetic field detection circuit 20 is output, is a high level, is the first switch 31 switched on and the second switch 32 is off, leaving a load current from the second power supply 50 through the first switch 31 and the output terminal Pout flows outside the integrated circuit. If the magnetic field detection information supplied by the magnetic field detection circuit 20 is output, is a low level, is the second switch 32 turned on and the first switch 31 is off, so that the load current from outside the integrated circuit through the second switch 32 flows to the output terminal Pout. It can be seen that the first switch 31 and the second switch 32 depending on circumstances, may be other structures in further embodiments, which is not limited in this disclosure.

In one embodiment of the disclosure, the input terminals include an input terminal configured to connect an external AC power supply to the magnetic sensor integrated circuit. The output control circuit 30 is configured to control, based on a polarity of the external AC power supply and the magnetic field detection information, the integrated circuit to switch between a first state in which the first current path is turned on and a second state in which the second current path is turned on.

It should be noted that the switching of the magnetic sensor integrated circuit between the first state and the second state is not limited to the case that the magnetic sensor integrated circuit switches to a state as soon as the other state ends, but also one Case in which the magnetic sensor integrated circuit waits for a period to switch from one state after the other state ends. In a preferred embodiment, no output is present in the output terminal of the magnetic sensor integrated circuit within the time period during the switching between the two states.

Furthermore, the output control circuit 30 is configured to control a load current flowing through the output terminal if the AC power supply is in a positive half-wave and the magnetic field of the rotor detected by the magnetic field detection circuit is a first polarity or if the AC power supply is in a negative half-wave and the magnetic field the rotor detected by the magnetic field detection circuit is a second polarity opposite to the first polarity, and to control that no load current flows through the output terminal if the AC power supply is in a positive half-wave and the magnetic field of the rotor is a second polarity, or if the AC power supply is in a negative half cycle and the magnetic field of the rotor is a first polarity opposite the second polarity. It should be noted if the AC power supply is in a positive half cycle and an external magnetic field is the first polarity or if the AC power supply is in a negative half cycle and the external magnetic field is the second polarity, a load current through the output port in the two of those described above two cases can flow permanently or only part of the time in either of the above two cases.

In one embodiment of the present disclosure, the input terminals may include an input terminal and a second input terminal for connecting an external AC power supply to the integrated circuit. The integrated circuit may further include a rectifier circuit 60 which is formed, an alternating current, which from the external AC power supply 70 is output to convert to a direct current. In the present disclosure, the connection of the input terminals and the external power supply has a case where the input terminals are connected directly via the external power supply, and a case where the input terminals and an external load are connected in series via the external power supply. which depends on the situations, which is not limited in the present disclosure.

Preferably, the integrated circuit continues as in FIG 5 shown a voltage adjustment circuit 80 on which between the rectifier circuit 60 and the magnetic field detection circuit 20 is arranged. In the embodiment, the rectifier circuit 60 as a second power supply 50 function, and the voltage matching circuit 80 can be considered the first power supply 40 act. The voltage adjustment circuit 80 is formed, a DC voltage, which from the rectifier circuit 60 is output, to regulate in a DC voltage with low voltage. The output control circuit 30 can by an output voltage of the rectifier circuit 60 are fed, and the magnetic field detection circuit 20 can by an output voltage of the voltage matching circuit 80 be fed.

In a specific embodiment of the present disclosure, as in 6 shown, the rectifier circuit 60 a full-wave bridge rectifier 61 and a voltage stabilizing unit 62 on. The full-wave bridge rectifier 61 is formed, an alternating voltage, which from the AC power supply 70 is output, to convert into a direct current, and the voltage stabilizing unit 62 is formed, a voltage of the DC electricity, which of the full-wave bridge rectifier 61 is output to stabilize within a predetermined range.

7 shows a specific embodiment of the rectifier circuit 60 , The voltage stabilization unit 62 includes a voltage stabilizing diode 621 which is between two output terminals of the full-wave bridge rectifier 61 is switched, and the full-wave bridge rectifier 61 has a first diode 611 and a second diode 612 on, which are connected in series, as well as a third diode 613 and a fourth diode 614 , which are connected in series. A common terminal of the first diode 611 and the second diode 612 are electrically connected to the first input terminal VAC + and a common terminal of the third diode 613 and the fourth diode 614 is connected to the second input terminal VAC-.

An input terminal of the first diode 611 is electrically connected to an input terminal of the third diode 613 connected to form a grounding output terminal of the full-wave bridge rectifier, an output terminal of the second diode 612 is electrically connected to an output terminal of the fourth diode 614 connected to form a voltage output terminal VDD of the full-wave bridge rectifier, and the voltage stabilization diode 621 is between the common terminal of the second diode 612 and the fourth diode 614 and the common terminal of the first diode 611 and the third diode 613 connected. In the embodiment of the disclosure, a power supply terminal of the output control circuit 30 electrically with the voltage output terminal of the full-wave bridge rectifier 61 be connected.

In one embodiment of the disclosure, as in FIG 8th shown has the magnetic field detection circuit 20 on: a magnetic field detection element 21 adapted to detect an external magnetic field and to convert it into an electrical signal; a signal processing unit 22 which is configured to amplify and decrypt the electrical signal; and an analog-to-digital converter unit 23 which is configured to convert the amplified and decrypted electrical signal into the magnetic field detection information. For an application requiring only the detection of a polarity of the external magnetic field, the magnetic field detection information may be a switch type digital signal. Preferably, the magnetic field sensing element 21 to be a reverb plate.

The magnetic sensor integrated circuit according to the present disclosure will be described in connection with a specific application.

As in 9 1, a motor assembly according to an embodiment of the disclosure is provided, which includes: a motor 200 which is from an AC power supply 100 is fed, a bidirectional switch 300 which is in series with the engine 200 is switched, and the magnetic sensor integrated circuit according to one of the above embodiments of the disclosure. The output terminal of the magnetic sensor integrated circuit 400 is with a control terminal of the bidirectional switch 300 connected. Preferably, the bidirectional switch 300 a triode AC semiconductor switch (TRIAC). It can be seen that the bidirectional switch can also be realized with other suitable switches, for example, two silicon-controlled rectifier, which are connected in parallel, and a control circuit is formed, the two silicon-controlled rectifier in a predetermined manner, based on comprise the output signal of the output terminal of the magnetic sensor integrated circuit.

Preferably, the motor device further comprises a voltage drop circuit 500 which is formed, an output voltage of the AC power supply 100 reduce and the magnetic sensor integrated circuit 400 to provide. The magnetic sensor integrated circuit 400 is near the runner of the engine 200 arranged to sense changes in a magnetic field of the runner.

On the basis of the embodiment described above, in a specific embodiment of the disclosure, the motor is a synchronous motor. It will be appreciated that the magnetic sensor integrated circuit can be used for both a synchronous motor and other types of permanent magnet motors, such as a brushless DC motor. As 11 shows, the synchronous motor has a stator and a rotatable relative to the stator rotor 11 on. The stand has a stator core 12 and a stator winding 16 on which ones around the stator core 12 is wound. The stator core 12 can be made of soft magnetic materials, such as pure iron, cast iron, cast steel, electrical steel, silicon steel. The runner 11 has a permanent magnet, the rotor 11 operates at a constant rotational speed of 60 f / p rpm during a steady state phase if the stator winding 16 is connected in series with an AC power supply, where f is a frequency of the AC power supply and p is the number of pole pairs of the rotor. In the embodiment, the stator core 12 two opposing poles 14 on. Each of the poles 14 has a pole bow 15 , an outer surface of the runner 11 lies the pole bow 15 opposite, and between the Outer surface of the runner 11 and the pole bow 15 is a substantially uniform air gap 13 educated. The term "substantially uniform air gap" in the present disclosure means that in the majority of the space between the stator and the rotor, a uniform air gap is formed and that an uneven air gap is formed in a small part of the space between the stator and the rotor , Preferably, a start groove 17 , which is concave, in the pole bow 15 the pole of the stand, and outside the start groove 17 can be a part of the pole bow 15 be concentric with the runner. With the above-described configuration, a nonuniform magnetic field can be formed, a pole axis S1 of the rotor having an inclination angle relative to the central axis S2 of the pole of the stator when the rotor is at rest, and the rotor can be used whenever the motor under the effect of integrated Circuit powered by electricity, have a starting torque. In particular, the term "polar axis S1 of the rotor" refers to a boundary between two magnetic poles having different polarity and the term "central axis S2 of the pole 14 of the stand "refers to a connecting line passing through central points of the two poles 14 of the stand runs. In the embodiment, both the stator and the rotor have two magnetic poles, it being understood that the number of magnetic poles of the stator need not be equal to the number of magnetic poles of the rotor and that in other embodiments the stator and the rotor may have more magnetic poles , for example 4 or 6 magnetic poles. It will be appreciated that, alternatively, another type of nonuniform air gap may be formed between the rotor and the stator.

In a preferred embodiment of the disclosure, the bidirectional switch is 300 as a triode AC semiconductor switch (TRIAC), the rectifier circuit 60 is as one in 7 and the output control circuit is implemented as one in FIG 3 shown circuit realized. A current input terminal of the first switch 31 or output control circuit 30 is with the voltage output terminal of the full-wave bridge rectifier 61 connected and a current output terminal of the second switch 32 is connected to the ground output terminal of the full-wave bridge rectifier 61 connected. If one from the AC power supply 100 is in a positive half cycle and the magnetic field detection circuit 20 outputs a low level, are in the output control circuit 30 the first switch 31 switched on and the second switch 32 is turned off, and a current from the output terminal through the AC power supply 100 , the engine 200 , a first input terminal of the integrated circuit 400 , a voltage drop circuit (in 3 not shown), an output terminal of the second diode 612 of the full wave bridge rectifier 61 , the first switch 31 the output control circuit 30 in the order listed to the bidirectional switch 300 and back to the AC power supply 100 , If the TRIAC 300 is turned on, a through the voltage drop circuit 500 and the magnetic sensor integrated circuit 400 formed series branch shorted and the magnetic sensor integrated circuit 400 stops output because there is no supply voltage during TRIAC 300 is further turned on, if there is no drive voltage between the control electrode and a first anode thereof, because a voltage applied between the two anodes is high enough (higher than a holding current thereof). If that from the AC power supply 100 output signal is in a negative half-wave and the magnetic field detection circuit 20 outputs a high level are in the output control circuit 30 the first switch 31 off and the second switch 32 turned on, and the current flows from the AC power supply 100 , from the bidirectional switch 300 to the output terminal through the second switch 32 the output control circuit 30 , the earth terminal and the first diode 611 of the full wave bridge rectifier 61 , the first input terminal of the integrated circuit 400 , the engine 200 and back to the AC power supply 100 , Similar if the TRIAC 300 is turned on, the magnetic sensor integrated circuit stops 400 with spending because she is short-circuited during the TRIAC 300 is still on. If one from the AC power supply 100 output signal is in a positive half-wave and the magnetic field detection circuit 20 outputs a high level or if that from the AC power supply 100 output signal is in a negative half-wave and the magnetic field detection circuit 20 output a low level are in the output control circuit 30 both the first switch 31 as well as the second switch 32 turned off and the triac 300 is switched off. In this way, the output control circuit 30 based on a polarity of the AC power supply 100 and the magnetic field detection information controls the integrated circuit to be the bidirectional switch 300 controls to switch between an on state and an off state in a predetermined manner and then the energization mode of the stator winding 16 so as to cause a variable magnetic field generated by the stator to move to a position of a magnetic field of the rotor and the rotor to rotate in a single direction and thereby allow the rotor to move in a fixed direction each time the motor is energized to turn.

In a motor arrangement according to another embodiment of the disclosure, the motor and the bidirectional switch may be connected in series via the AC power supply, and a first series branch formed by the motor and the bidirectional switch is connected in parallel to a second series branch formed by the voltage dropping circuit and the magnetic sensor integrated circuit is formed. The output terminal of the magnetic sensor integrated circuit is connected to the bidirectional switch to control the bidirectional switch to switch between the on state and the off state in a predetermined manner, thereby controlling the excitation mode of the stator winding.

The engine component according to the embodiments of the disclosure may be used in, but not limited to, a pump, a fan, a household appliance, and a vehicle, and the home appliance may be, for example, a washing machine, a dishwasher, an extractor hood, or a smoke exhaust fan.

It should be noted that the scope of the integrated circuit according to the present disclosure is not limited herein, although the embodiments of the present disclosure will be explained by using an example in which the integrated circuit for a motor is applied.

It should be noted that the parts in this specification have been progressively explained, with each element having been found to differ from the other elements and wherein like or similar parts may refer to each other.

It should also be noted that relational terms such as "first", "second" and the like have been used herein merely to distinguish entities or operations from one another without implying that there is an actual relationship between the entities or operations. Further, terms such as "include," "include," and other variations are non-exclusive, therefore, a process, method, object, or device comprising a plurality of elements will not only have the described elements but also other or further Elements which are not expressly listed or which may be inherent elements of the process, method, article or device. Without an explicit other restriction, the term "comprising a ..." is to be understood in the sense that, besides the enumerated elements, there may be other elements in the process, method, object or device.

The description of the embodiments will enable one skilled in the art to make or use the present disclosure. It will be apparent to those skilled in the art that numerous modifications are possible within the scope of the present invention, so that the invention is not limited to the described embodiments, but to the utmost extent consistent with the principles and novel features described herein.

Claims (15)

Magnetic sensor integrated circuit ( 400 ) for controlling an engine ( 200 ), comprising: a housing, a semiconductor substrate disposed in the housing, an electronic circuit disposed on the semiconductor substrate, and input terminals (A1, A2) and an output terminal (Pout) extending from the housing, the electronic circuit comprising: a magnetic field detection circuit ( 20 ) used to detect a magnetic field of a runner ( 11 ) of the motor and for outputting magnetic field detection information; and an output control circuit ( 30 ), which has a first switch ( 31 ) and a second switch ( 32 ), wherein the first switch ( 31 ) and the output terminal (Pout) are connected in a first current path, the second switch ( 32 ) and the output terminal (Pout) are connected in a second current path having a direction opposite to the first current path, and the first switch ( 31 ) and the second switch ( 32 ) are selectively turned on based on the magnetic field detection information to an excitation mode of the motor ( 200 ) to control. Magnetic sensor integrated circuit according to claim 1, wherein the output control circuit ( 30 ) comprises a push-pull output circuit, the first switch ( 31 ) and the second switch ( 32 ) is a pair of complementary semiconductor switches, a current input terminal of the first switch is connected to a high voltage, a current output terminal of the second switch is connected to a low voltage, control terminals of the first switch and the second switch each with an output terminal of the magnetic field detection circuit ( 20 ) and a common terminal of the first switch ( 31 ) and the second switch ( 32 ) is connected to the output terminal (Pout). A magnetic sensor integrated circuit according to claim 1 or 2, wherein said magnetic field detection circuit ( 20 ) by a first power supply ( 40 ) and the output control circuit ( 30 ) by a second power supply ( 50 ), which is different from the first power supply ( 40 ). Magnetic sensor integrated circuit according to claim 1 or 2 or 3, wherein the input terminals (A1, A2) have an input terminal for connecting an external AC power supply ( 70 . 100 ) to the magnetic sensor integrated circuit ( 400 ), and the output control circuit ( 30 ) is formed based on a polarity of the AC power supply ( 70 . 100 ) and the magnetic field detection information, the integrated circuit ( 400 ) between a first state in which the first current path is turned on, and a second state in which the second current path is turned on. Magnetic sensor integrated circuit according to claim 1 or 2 or 3, wherein the output control circuit ( 30 ), the integrated circuit ( 400 ), at least based on the magnetic field detection information, to control that it switches immediately between a first state in which the first current path is turned on, and a second state in which the second current path is turned on. Magnetic sensor integrated circuit according to claim 1 or 2 or 3, wherein the output control circuit ( 30 ), the integrated circuit ( 400 ), at least based on the magnetic field detection information, to control that it switches immediately either in a first state in which the first current path is turned on, or in a second state in which the second current path is turned on, after the other state for a period has ended. Magnetic sensor integrated circuit according to claim 4, wherein the output control circuit ( 30 ) is configured to: control that a load current flows through the output terminal (Pout) if the AC power supply ( 70 . 100 ) is in a positive half-wave and a magnetic field polarity of the rotor ( 11 ) is a first polarity, or if the AC power supply ( 70 . 100 ) is in a negative half-wave and a magnetic field polarity of the rotor ( 11 ) is a second polarity, which is opposite to the first polarity, or to control that no load current flows through the output terminal (Pout), if the AC power supply ( 70 . 100 ) is in a positive half-wave and a magnetic field polarity of the rotor ( 11 ) is a second polarity, or if the AC power supply ( 70 . 100 ) is in a negative half-wave and a magnetic field polarity of the rotor ( 11 ) is a first polarity which is opposite to the second polarity. Magnetic sensor integrated circuit according to claim 7, wherein the output control circuit ( 30 ) is arranged to control that a current flows through the output terminal (Pout) if the AC power supply ( 70 . 100 ) is in a positive half-wave and a magnetic field polarity of the rotor ( 11 ) is the first polarity, or if the AC power supply ( 70 . 100 ) is in a negative half-wave and a magnetic field polarity of the rotor ( 11 ) is the second polarity. Magnetic sensor integrated circuit according to claim 7, wherein the output control circuit ( 30 ) is arranged to control that, for a part of the time, a current flows through the output terminal (Pout) if the AC power supply ( 70 . 100 ) is in a positive half-wave and a magnetic field polarity of the rotor ( 11 ) is the first polarity, or if the AC power supply ( 70 . 100 ) is in a negative half-wave and a magnetic field polarity of the rotor ( 11 ) is the second polarity. A motor assembly comprising: a motor ( 200 ), and a motor drive circuit incorporating the magnetic sensor integrated circuit ( 400 ) according to any one of claims 1 to 9. Motor assembly according to claim 10, wherein the motor drive circuit further comprises a bidirectional switch ( 300 ) powered by an external AC power supply ( 70 . 100 ) in series with the engine ( 200 ), and the output terminal (Pout) of the magnetic sensor integrated circuit ( 400 ) is connected to a control terminal of the bidirectional switch ( 300 ) connected. Motor arrangement according to claim 10 or 11, wherein the motor ( 200 ) is a single-phase permanent magnet synchronous motor comprising a stator and a permanent magnet rotor, and the stator comprises a stator core ( 12 ) one on the stator core ( 12 ) wound single-phase winding ( 16 ), an uneven magnetic path is formed between the stator and the rotor so that an inclination angle exists between a pole axis (S1) of the permanent magnet rotor and a central axis (S2) of the stator when the permanent magnet rotor rests, and the rotor (FIG. 11 ) operates at a constant rotational speed of 60 f / p rpm in a steady-state phase after the winding ( 16 ) of the stator, where f is a frequency of the AC power supply ( 70 . 100 ) and p is the number of pole pairs of the runner ( 11 ). Motor assembly according to claim 10 or 11 or 12, wherein the motor assembly further comprises a voltage drop ( 500 ) for reducing a voltage of the AC power supply and for providing the reduced voltage to the magnetic sensor integrated circuit ( 400 ) is trained. Motor arrangement according to claim 11, wherein the output control circuit ( 30 ) of the magnetic sensor integrated circuit ( 400 ) is formed: the bidirectional switch ( 300 ) if the AC power supply ( 70 . 100 ) is in a positive half-wave and a magnetic field polarity of the rotor ( 11 ) is a first polarity, or if the AC power supply ( 70 . 100 ) is in a negative half-wave and a magnetic field polarity of the rotor ( 11 ) is a second polarity, which is opposite to the first polarity, and the bidirectional switch ( 300 ), if the AC power supply ( 70 . 100 ) is in a negative half-wave and a magnetic field polarity of the rotor ( 11 ) is the first polarity, or if the AC power supply ( 70 . 100 ) is in a positive half-wave and a magnetic field polarity of the rotor ( 11 ) is the second polarity which is opposite to the first polarity. Motor arrangement according to claim 14, wherein the output control circuit ( 30 ) is configured to: control that a current from the output terminal (Pout) to the bidirectional switch ( 300 ) flows if one of the AC power supply ( 70 . 100 ) signal is in a positive half wave and the magnetic field of the rotor ( 11 ) has the first polarity, and to control that a current from the bidirectional switch ( 300 ) flows to the output terminal (Pout) if that of the AC power supply ( 70 . 100 ) signal is in a negative half-wave and the magnetic field of the rotor ( 11 ) has the second polarity.

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