DE202016104034U1 - Magnetic sensor integrated circuit and motor assembly - Google Patents

Abstract

A magnetic sensor integrated circuit (400) comprising:
a housing,
a semiconductor substrate disposed in the housing,
an electronic circuit disposed on the semiconductor substrate and input ports (A1, A2), a first output port (B1), and a second output port (B2) extending from the housing, the electronic circuit comprising:
a magnetic field detection circuit (20) configured to detect an external magnetic field and generate magnetic field detection information, the first output port (B1) being connected to the magnetic field detection circuit for outputting the magnetic field detection information to an outside of the housing; and
an output control circuit (30) configured to control the integrated circuit (400) based on at least the magnetic field detection information such that the integrated circuit (400) operates at least in a first state in which a current is supplied from the second output port (400); B2) flows to an outside of the integrated circuit, or at least in a second state, in which a current flows from the outside of the integrated circuit to the second output port (B2).

Description

FIELD OF THE INVENTION

 The present invention relates to the field of magnetic field detection technology.

BACKGROUND OF THE INVENTION

 In modern industry and electronic products, a magnetic sensor is often used to measure physical parameters such as current, position and direction by detecting the magnetic field strength. An essential field of application for magnetic sensors is the motor industry. Here, the magnetic sensor is used for detecting the pole position of a rotor in an electric motor.

OVERVIEW

 The conventional magnetic sensor can generally output only the result of detection of a magnetic field, so that in addition to processing the result of magnetic field detection in practice, a peripheral circuit is required, making the circuit as a whole very expensive and unreliable.

OVERVIEW

According to one aspect of the present invention, a magnetic sensor integrated circuit is provided in one embodiment. The magnetic sensor integrated circuit has a housing, a semiconductor substrate disposed in the housing, an electronic circuit disposed on the semiconductor substrate, and input ports, a first output port, and a second output port extending from the housing, the electronic circuit comprising :
a magnetic field detection circuit configured to detect an external magnetic field and to generate a magnetic field detection information, the first output port for outputting the magnetic field detection information being connected to an outside of the housing with the magnetic field detection circuit; and
an output control circuit configured to control the integrated circuit based on at least the magnetic field detection information so that the integrated circuit operates at least in a first state in which a current flows from the second output port to an outside of the integrated circuit, or at least in a second state in which a current flows from the outside of the integrated circuit to the second output port.

Preferably, the magnetic field detection circuit may include:
a magnetic field detection element configured to detect the external magnetic field and to generate an electrical signal;
a signal processing unit configured to amplify and decrypt the electrical signal; and
a conversion unit configured to convert the amplified and decrypted electrical signal into the magnetic field detection information, wherein an output terminal of the conversion unit is connected to the output control circuit and to the first output port.

 Preferably, the magnetic field detection information may be a switchable digital signal.

 Preferably, the integrated circuit may have at least four ports extending from the housing.

 Preferably, the integrated circuit may have exactly four ports extending from the housing.

 Preferably, the input ports may include an input port configured for connection to an external AC supply, and the output control circuit may be configured for control of the integrated circuit based on a polarity of the AC power supply and based on the magnetic field detection information be such that the integrated circuit switches at least between the first state and the second state.

 Preferably, the output control circuit may comprise a first switch and a second switch, wherein the first switch and the second output port may be connected in a first current path, the second switch and the second output port may be connected in a second current path, whose direction is opposite to that of the first current path, and the first switch and the second switch can be selectively activated based on the magnetic field detection information.

Preferably, the output control circuit may comprise a first current path in which a current flows from the second output port, a second current path in which a current flows from the second output port, and a switch which is in the first current path or in the second Current path is connected, wherein the switch can be configured such that this the first current path and the second current path controls based on the magnetic field detection information output from the magnetic field detection circuit, so that the first current path and the second current path are selectively activated.

 Preferably, the output control circuit may be configured to control a load current such that the load current flows through the second output port when the AC power supply is in a positive half-cycle and the external magnetic field has a first polarity or when the AC power supply is in a negative Half cycle is and the external magnetic field has a second polarity opposite to the first polarity, and such that no load current flows through the second output port, when the AC power supply is in a positive half cycle and the external magnetic field has the second polarity or if the AC power supply is in a negative half cycle and the external magnetic field has the first polarity.

Preferably, the input ports may include a first input port and a second input port configured for connection to the external AC power supply, and the integrated circuit may further include a rectifier circuit configured to convert one of the external ones Power output AC voltage in a DC voltage.

 Preferably, the integrated circuit may further include a voltage setting circuit configured to set a first voltage output from the rectifier switch to a second voltage, the first voltage being a supply voltage of the output control circuit, the second voltage being a supply voltage of the magnetic field detection circuit, and an average of first voltage is greater than the average of the second voltage.

 In another aspect, an engine assembly is provided in an embodiment of the present invention. The motor assembly includes a motor and a motor drive circuit, wherein the motor drive circuit comprises the above-described magnetic sensor integrated circuit.

 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 second output port 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 rotor, and the stator may comprise a stator core and a single-phase winding formed on the stator core.

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

 Preferably, the magnetic sensor integrated circuit may be configured to control the bidirectional switch so that the bi-directional switch is activated when the AC power supply is in a positive half-cycle and a magnetic field of the permanent-rotor has a first polarity or when the AC power supply is in a negative half cycle Magnetic field of the permanent rotor having a second polarity opposite to the first polarity, and that the bidirectional switch is deactivated when the AC power supply is in a negative half cycle and a magnetic field of the permanent rotor has the first polarity or if the AC power supply is in a negative half cycle and a magnetic field of the permanent rotor has the second polarity.

 Preferably, the magnetic sensor integrated circuit may be configured to control a current such that the current flows from the integrated circuit to the bidirectional switch when a signal output from the AC power supply is in a positive half-cycle and the magnetic field of the permanent-rotor has the first polarity, or that the current flows from the bidirectional switch to the integrated circuit when the signal output from the AC power supply is in a negative half-cycle and the magnetic field of the permanent-rotor has the second polarity.

 The functions of existing magnetic sensors are extended with the magnetic sensor integrated circuit according to the invention. The cost of the circuit as a whole is reduced, and the reliability of the circuit is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

The following is a brief description of the drawings used to explain embodiments of the present invention or the conventional technology, so that the technical solutions according to the embodiments or according to the conventional technology become clearer. In the 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 schematically shows a structure diagram of a magnetic sensor integrated circuit according to an embodiment of the present invention;

2 schematically shows a structural diagram of an electronic circuit in a magnetic sensor integrated circuit according to an embodiment of the present invention;

3 schematically shows a structure diagram of an output control circuit in a magnetic sensor integrated circuit according to an embodiment of the present invention;

4 schematically shows a structure diagram of an output control circuit in a magnetic sensor integrated circuit according to an embodiment of the present invention;

5 schematically shows a structure diagram of an output control circuit in a magnetic sensor integrated circuit according to an embodiment of the present invention;

5A schematically shows a structure diagram of an output control circuit in a magnetic sensor integrated circuit according to an embodiment of the present invention;

6 schematically shows a structure diagram of a magnetic sensor integrated circuit according to an embodiment of the present invention;

7 schematically shows a structure diagram of a rectifier circuit in a magnetic sensor integrated circuit according to an embodiment of the present invention;

8th schematically shows a specific implementation of the rectifier circuit of 7 ;

9 schematically shows a structure diagram of a magnetic field detection circuit in a magnetic sensor integrated circuit according to an embodiment of the present invention;

10 schematically shows a structural diagram of a motor assembly according to an embodiment of the present invention; and

11 schematically shows a structural diagram of an engine in a motor assembly according to an embodiment of the present invention.

LONG DESCRIPTION

 Technical solutions according to the embodiments of the invention are explained in detail below with reference to the drawings, wherein the described embodiments represent only some of the possible embodiments of the invention. Those skilled in the art will recognize that based on the present embodiments without inventive step, other embodiments are possible which fall within the scope of the present invention.

 Further details are given in the following description, and the invention may be implemented in a manner that differs from the manner described herein. Similar expansions may be made by those skilled in the art without departing from the spirit of the invention. For this reason, the invention is not limited to the particular embodiments described below.

 A magnetic-sensor-integrated circuit according to an embodiment of the invention will be described below using the example of a magnetic-sensor-integrated circuit used in an engine.

As in 1 is shown, according to an embodiment of the present invention, a magnetic sensor integrated circuit is provided. The magnetic sensor integrated circuit has a housing 2 , a semiconductor substrate (not shown) housed in the housing 2 is disposed, an electronic circuit disposed on the semiconductor substrate and input ports A1 and A2, a first output port B1 and a second output port B2 extending from the housing 2 extend. The electronic circuit includes:
a magnetic field detection circuit 20 configured for detecting an external magnetic field and for generating magnetic field detection information, wherein the first output port B1 is connected to the magnetic field detection circuit 20 connected to output the magnetic field detection information to an outside of the housing; and
an output control circuit 30 configured for controlling the integrated circuit based on at least the magnetic field detection information, in that the integrated circuit operates in at least a first state in which a current flows from the second output port B2 to an outside of the integrated circuit, or at least in a second state in which a Current flows from the outside of the integrated circuit to the second output port B2.

In a preferred embodiment of the invention based on the above embodiment, the output control circuit is 30 configured to control the integrated circuit based on at least the magnetic field detection information in a manner that the integrated circuit switches between a first state in which a load current flows from the second output port to the outside of the integrated circuit, and a second state in which a load current flows from the outside of the integrated circuit to the second output port. If necessary, both an outgoing current and an incoming current flow through a rectifier circuit, in which case there is no restriction.

 It is to be noted that, in one embodiment of the invention, the switching of the magnetic-sensor integrated circuit between the first state and the second state is not limited to the magnetic-sensor-integrated circuit switching to a state as soon as the other state is finished. Rather, the magnetic sensor integrated circuit waits until a time interval has elapsed before it switches to a state after which another state has ended. In a preferred embodiment, there is no output at the output ports of the magnetic sensor integrated circuit within the time interval in which switching between the two states.

As in 2 1, the electronic circuit in one embodiment of the invention includes a first power supply 40 and a second power supply 50 , The magnetic field detection circuit 20 gets through the first power supply 40 fed, and the output control circuit 30 is powered by the second power supply, which differs from the first power supply 40 different. Preferably, an average of an output voltage of the first power supply 40 smaller than an average of an output voltage of the second power supply 50 , It should be noted that the magnetic field detection circuit 20 is powered by a power supply with low power consumption, which can reduce the overall power consumption of the integrated circuit. The output control circuit 30 is powered by a high power power supply, which allows the second output port to be controlled to provide a high load current to ensure sufficient drive capability of the integrated circuit.

In an embodiment of the invention based on the embodiment described above, the output control circuit includes 30 a first switch and a second switch. The first switch and the second output port are connected in a first current path, the second switch and the second output port are connected in a second current path, the direction of which is opposite to the direction of the first current path, and the first switch and the second switch are selectively activated based on the magnetic field detection information. The first switch may preferably be a triode and the second switch may be a triode or a diode, as the case may be, without limitation.

In a specific embodiment of the invention, which in 3 is shown, the first switch 31 at a low level and the second switch 32 activated at a high level. The first switch 31 and the second output port B2 are connected in the first current path. The second switch 32 and the second output port B2 are connected in the second current path. Control terminals of the first switch 31 and the second switch 32 are with the magnetic field detection circuit 20 connected. A current input terminal of the first switch 31 is connected to a high voltage (eg, a DC power supply), a current output terminal of the first switch 31 is connected to a current input terminal of the second switch 32 connected, and a current output terminal of the second switch 32 is connected to a low voltage (eg to earth). When the level of the magnetic field detection information supplied by the magnetic field detection circuit 20 is output, is a low level, the first switch 31 activated and the second switch 32 disabled, so that a load current from the high voltage end by the first switch 31 and the second output port B2 flows. When the level of the magnetic field detection information supplied by the magnetic field detection circuit 20 is output, it is the second switch 32 activated and the first switch 31 disabled, so that the load current from outside the integrated circuit through the second switch 32 flows to the second input-output port B2.

In a further embodiment of the invention, which in 4 is shown is the first switch 31 a switching transistor which is activated at a high level, the second switch 32 is a device 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 both are connected to the second output port B2. The first switch 31 and the second output port B2 are connected in a first current path, and the second output port B2, the second switch 32 and the magnetic field detection circuit 20 are connected in a second current path. When the level of the magnetic field detection information supplied by the magnetic field detection circuit 20 is output, is a high level, the first switch 31 activated and the second switch 32 disabled, allowing the load current from the second power supply 50 through the first switch 31 and the second output port B2 flows. When the level of the magnetic field detection information supplied by the magnetic field detection circuit 20 is output, is a low level, the second switch 32 activated and the first switch 31 disabled, so that the load current from outside the integrated circuit through the second switch 32 flows to the second output port B2. It is understood that the first switch 31 and the second switch 32 in other embodiments may optionally have a different structure and that there is no restriction in this regard.

In a further embodiment of the invention, the output control circuit has 30 a first current path in which a current flows from an output port, a second current path in which a current flows from the output port, and a switch connected in the first current path or in the second current path. The switch is configured to control the first current path and the second current path for their selective activation based on the magnetic field detection information output from the magnetic field detection circuit. Preferably, the other of the two current paths is not provided with a switch.

In a special implementation that in 5 is shown has the output control circuit 30 a furnishing switch 33 , The interior switch 33 and the second output port B2 are connected in the first current path, a current input terminal of the device switch 33 can with an output terminal of the magnetic field detection circuit 20 be connected, and the output terminal of the magnetic field detection circuit 20 can be connected via a resistor R1 and the second output port B2 in the second current path, whose direction is opposite to the direction of the first current path. The interior switch 33 is activated when a magnetic field induction signal has a high level, so that the load current through the device switch 33 and the second output port B2 flows out. The interior switch 33 is deactivated when the level of the magnetic field induction signal is low, so that the load current through the resistor R1 and the magnetic field detection circuit 20 flows from outside the integrated circuit to the second output port B2. Alternatively, the resistor R1 in the second current path may be replaced by another device switch associated with the device switch 33 is connected in anti-parallel. In this way, outgoing and incoming load currents can be compensated by the output port.

In another special implementation, the in 5A is shown contains the output control circuit 30 Diodes D1 and D2 connected between the output terminal of the magnetic field detection circuit 20 and an output port Pout are in antiserial, a resistor R1, which is connected in parallel with the series-connected diodes D1 and D2, and a resistor R2, which is connected between a common terminal of the diodes D1 and D2 and a power supply Vcc. A cathode of the diode D1 is connected to the output terminal of the magnetic field detection circuit 20 connected. The power supply Vcc may be connected to a voltage output terminal of the rectifier switch. The diode D1 is controlled on the basis of the magnetic field detection information. When the level of the magnetic field detection information is a high level, the diode D1 is turned off and the load current flows out of the output port Pout via the resistor R2 and the diode D2. When the level of the magnetic field detection information is a low level, the load current flows through the resistor R1 and the magnetic field detection circuit 20 from outside the integrated circuit to the output port Pout.

In an embodiment of the invention based on any of the above embodiments, the input ports include the first input port A1 and the second input port A2 configured to connect an external AC power supply to the magnetic sensor integrated circuit, and the output control circuit controls the integrated circuit based on a polarity of the AC power supply and based on the magnetic field detection information for switching between at least the first and the second state. Optionally, the magnetic field detection circuit 20 and the output control circuit 30 powered by the same power supply.

In an embodiment of the invention based on any of the above embodiments, the control circuit is 30 configured to control the load current such that the load current flows through the second output port when the AC power supply is in a positive half-cycle and that through the magnetic field detection circuit 20 detected polarity of the external magnetic field is the first polarity or when the AC power supply is located in a negative half-cycle and by the magnetic field detection circuit 20 detected polarity of the external magnetic field is opposite to the first polarity of the second polarity, or for a control in that no load current flows through the second output port, when the AC power supply is in a positive half cycle and by the magnetic field detection circuit 20 detected polarity is the second polarity or when the AC power supply is in a negative half-cycle and by the magnetic field detection circuit 20 detected polarity is opposite to the second polarity of the first polarity. It should be noted that when the AC power supply is in a positive half-cycle and the external magnetic field is the first polarity or when the AC power supply is in a negative half-cycle and the external magnetic field has the second polarity, the load current in both of the above cases through the second output port or in one of the aforementioned cases only for part of the time.

In an embodiment of the invention based on the above embodiments, the input ports may include the first input port A1 and the second input port A2 connecting the external AC power supply to the magnetic sensor integrated circuit. The connection of the input ports and the external power supply according to the invention comprises the direct connection of the input ports via the external AC power supply and optionally a series connection of the input ports and the external load via the external AC power supply, with no restrictions being given here. As 6 shows, the integrated circuit in one embodiment of the invention includes a rectifier circuit 60 configured for converting one of the AC power source 70 output AC power into a DC.

It should be noted that in the embodiment of the invention, the rectifier circuit 60 with the output control circuit 30 is connected and that the output control circuit 30 may be configured for controlling the integrated circuit based on at least the magnetic field detection information such that the integrated circuit operates at least in the first state in which a current flows from the second output port to the outside of the integrated circuit, or at least in the second State in which a current flows from the outside of the integrated circuit to the second output port.

In a preferred embodiment of the invention based on the above embodiments, the integrated circuit further includes a voltage setting circuit 80 between the rectifier circuit 60 and the magnetic field detection circuit 20 is arranged. In the embodiment, the rectifier circuit 60 the function of a second power supply 50 take over, and the voltage setting circuit 80 can be considered the first power supply 40 and may be configured to adjust the first voltage provided by the rectifier circuit 60 is output to a second voltage. The second voltage is a supply voltage of the magnetic field detection circuit 20 , the first voltage is a supply voltage of the output control circuit 30 and an average of the first voltage is greater than an average of the second voltage to reduce the power consumption of the integrated circuit and to ensure sufficient driving capability of the integrated circuit.

In a specific embodiment of the invention, which in 7 is shown, contains the rectifier circuit 60 a full wave bridge rectifier 61 and a voltage stabilizing unit 62 connected to an output terminal of the full-wave bridge rectifier 61 connected is. The full wave bridge rectifier 61 is configured to convert one of the AC power supplies 70 output AC current into a DC, and the voltage stabilizing unit 60 is configured for the stabilization of the full-wave bridge rectifier 61 output DC current within a predetermined range.

8th shows a specific implementation of the rectifier circuit 60 , The voltage stabilization unit 62 has a voltage stabilizing diode 621 between two output terminals of the full wave bridge rectifier 61 is switched. The full wave bridge rectifier 61 has a first diode 611 and a second diode 612 , which are connected in series, and a third diode 613 and a fourth diode 614 which are connected in series. A common connection of the first diode 611 and the second diode 612 is electrically connected to the first input port VAC +, and a common terminal of the third diode 613 and the fourth diode 614 is VAC-electrically connected to the second input port.

An input terminal of the first diode 611 is with an input terminal of the third diode 613 electrically connected to form a ground output terminal of the full-wave bridge rectifier, an output terminal of the second diode 612 is connected to an output terminal of the fourth diode 614 electrically connected to a voltage output terminal VDD of the Form full wave bridge rectifier, and the voltage stabilizing diode 621 is between a common terminal of the second diode 612 and the fourth diode 614 and a common terminal of the first diode 611 and the third diode 613 connected. It should be noted that a power terminal of the output control circuit 30 to the voltage output terminal of the full wave bridge rectifier 61 can be connected.

In an embodiment of the invention, which is based on the above embodiments and which in 9 is shown contains the magnetic field detection circuit 20 a magnetic field sensing element 21 configured for detecting the external magnetic field and converting it to an electrical signal; a signal processing unit 22 configured for amplification and decryption of the electrical signal; and an analog-to-digital conversion unit 23 which is configured to convert the amplified and decrypted electrical signal into the magnetic field detection information. For an application requiring only detection of a polarity of the external magnetic field, the magnetic field detection information may be a switchable digital signal. The magnetic field detection element 21 may preferably be a Hall plate. In the embodiment, an output terminal of the analog / digital conversion unit 23 with the output control circuit 30 and the first output port B1. The output control circuit 30 may process the magnetic field detection information in the magnetic sensor integrated circuit, and may generate a desired output at the second output port B2, and the magnetic field detection information output from the first output port B1 may be provided for external circuit of the magnetic sensor integrated circuit.

 In a preferred embodiment, a frequency of occurrence of the first state or the second state is proportional to a frequency of the AC power supply when the input ports include the first input port and the second input port that are connected to the external AC power supply Magnetsensor integrated circuit are configured, there are no restrictions.

 The following is the description of the magnetic sensor integrated circuit according to the invention in the context of a particular application.

As in 10 is shown, a motor assembly according to an embodiment of the invention is provided. The engine assembly includes:
an engine 200 that by an AC power supply 100 is fed;
a bidirectional switch 300 that with the engine 200 is connected in series; and the magnetic sensor integrated circuit 400 according to one of the embodiments described above. The second output port B2 of the magnetic sensor integrated circuit 400 is with a control port of the bidirectional switch 300 connected. The bidirectional switch 300 may preferably be a triode AC solid state switch (TRIAC). It will be appreciated that the bi-directional switch may also be implemented with another suitable switch, which may comprise, for example, two anti-parallel connected silicon controlled rectifiers and a control circuit adapted to control the two silicon controlled rectifiers in a predetermined manner based on the output signal from the output port of the magnetic sensor integrated circuit. Preferably, the motor assembly further includes a voltage reducing circuit 500 which is configured to reduce an output voltage of an AC power supply 100 and for providing the reduced voltage for the magnetic sensor integrated circuit 400 , The magnetic sensor integrated circuit 400 is near a rotor of the engine 200 arranged to detect a change in the magnetic field of the rotor.

In a specific embodiment of the invention based on the above embodiments, the motor is a synchronous motor, which of course can be used not only in a synchronous motor, but also in other suitable types of permanent motors, for example a brushless DC motor. As 11 shows, the synchronous motor has a stator and a rotor 11 which can rotate relative to the stand. The stand has a stator core 12 and a stator winding 16 around the stator core 12 is led around. The stator core 12 can be made of soft magnetic materials such as pure iron, cast iron, cast steel, electrical steel and silicon steel. The runner 11 contains a permanent magnet. The runner 11 operates at a constant rotational speed of 60 f / p (rpm) during a continuous operation phase when 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 , 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 a substantially uniform air gap is formed. The term "substantially uniform air gap" in the present specification means that in the majority of the space between the stator and the runner a uniform air gap 13 is formed and that a non-uniform 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 instead of the start groove 17 can be a part of the pole bow 15 be concentric with the runner. With the configuration described above, the nonuniform magnetic field can be formed, a pole axis S1 of the rotor has 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 operated under the effect of the rotor integrated circuit is 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 also be understood that alternatively, another type of nonuniform air gap may be formed between the rotor and the stator.

In an embodiment of the invention based on the above embodiments, the magnetic sensor integrated circuit is 30 configured for bidirectional control 300 such that the bi-directional switch is activated when the AC power supply 100 in a positive half cycle and the polarity of one through the magnetic field detection circuit 20 detected magnetic field of the permanent rotor is the first polarity or when the AC power supply 100 is in a negative half cycle and the polarity of one through the magnetic field detection circuit 20 detected magnetic field of the permanent rotor is opposite to the first polarity of the second polarity, or for a control such that the bidirectional switch 300 is disabled when the AC power supply 100 is in a negative half-cycle and the polarity of a magnetic field of the permanent rotor detected by the magnetic field detection circuit is the first polarity or when the AC power supply 100 is in a positive half cycle and the polarity of a magnetic field of the permanent rotor detected by the magnetic field detection circuit is the second polarity opposite to the first polarity.

Preferably, the output control circuit is 30 configured to control a current such that the current flows from the integrated circuit to the bi-directional switch 300 flows when one of the AC power supply 100 output signal is in a positive half cycle and the polarity of one by the magnetic field detection circuit 20 detected magnetic field of the permanent rotor is the first polarity, or for a control of a current in such a way that the current from the bidirectional switch 300 flows to the integrated circuit when one of the AC power supply 100 output signal is in a negative half cycle and the polarity of one through the magnetic field detection circuit 20 detected magnetic field of the permanent rotor is opposite to the first polarity second polarity. It is understood that the current flowing from the integrated circuit and the integrated circuit includes the case where a load current flows through the entire time period, and the case where a load current flows only during a part of the time when the permanent rotor has the first polarity and the AC power supply is in a positive half cycle or when the permanent rotor has the second polarity and the AC power supply is in a negative half cycle.

In a preferred embodiment of the invention, the bidirectional switch 300 implemented as a triode AC semiconductor switch (TRIAC), the rectifier circuit 60 is executed as a circuit, as in 8th is shown, and the output control circuit is implemented as a circuit as shown in FIG 4 is shown. A current input terminal of the first switch 31 in the output control circuit 30 is connected to 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. In a positive half cycle one of the AC power supply 100 output signal and when the magnetic field detection circuit 20 outputs a low level, is in the control circuit 30 the first switch 31 activated and the second switch 32 disabled, and a current flows from the second output port through the AC power supply 100 , the engine 200 , a first input terminal of the integrated circuit 400 a voltage reduction circuit, an output terminal of the second diode 612 of the full wave bridge rectifier 61 , the first switch 31 the output control circuit 30 to the bidirectional switch 300 and back to the AC power supply 100 , When the TRIAC is turned on, a serial branch is created by the voltage reduction circuit 500 and the Magnetic sensor integrated circuit 400 is formed, short-circuited and the magnetic sensor integrated circuit 400 stops the output because there is no supply voltage, whereas the TRIAC is still on when there is no drive current between a control electrode and a first anode thereof, since a current flowing between its two anodes is sufficiently high (higher than a holding current thereof) , If that from the AC power supply 100 input signal is located in a negative half cycle and the magnetic field detection circuit 20 outputs a high level becomes the first switch 31 disabled and the second switch 32 activated, and a current from the AC power supply 100 flows from the bidirectional switch 300 through the second switch 32 the output control circuit 30 , the ground output terminal of the first diode 611 of the full wave bridge rectifier 61 , the first input terminal of the integrated circuit 400 , the engine 200 to the second output port and back to the AC power supply 100 , If the TRIAC 300 is turned on, the magnetic sensor integrated circuit stops 400 similarly the output to be shorted while the TRIAC is still on. If one of the AC power supply 100 output signal is in a positive half cycle and the magnetic field detection circuit 20 outputs a high level or if that is from the AC power supply 100 output signal is located in a negative half cycle and the magnetic field detection circuit 20 outputs a low level become the first switch 31 and also the second switch 32 in the output control circuit 30 disabled and the triac 300 off. In this way, the output control circuit 30 the integrated circuit based on the polarity of the AC power supply 100 and controlling based on the magnetic field detection information so that the integrated circuit controls the bidirectional switch 300 for switching between an activation state and a deactivation state in a predetermined manner, whereby an excitation mode of the stator winding 16 is controlled such that the changed magnetic field generated by the stator matches a position of the magnetic field of the rotor and entrains the rotor so that the rotor rotates in one direction, thereby allowing the rotor to turn on each time the engine is turned on is turned in a fixed direction.

 The magnetic sensor integrated circuit according to the embodiment of the invention has at least four ports extending from the housing, namely the input ports, the first output port and the second output port. Further preferably, the magnetic sensor integrated circuit according to the embodiment of the present invention has exactly four ports, i. the first input port, the second input port, the first output port, and the second output port.

 In a motor assembly according to another embodiment of the invention, the motor and the bidirectional switch may be connected in series via the external AC power supply, and a first serial branch formed by the motor and the bi-directional switch is connected to a second serial branch formed by the first serial branch Spannungsreduzierschaltung and the magnetic sensor integrated circuit is formed, connected in parallel. The output port of the magnetic sensor integrated circuit is connected to the bidirectional switch to control the bidirectional switch to switch between the activation state and the deactivation state in a predetermined manner, thereby controlling the energization mode of the stator winding.

 The engine assembly according to the embodiment of the invention may be applied to, but not limited to, a pump, a blower, a household appliance, and a vehicle. In this case, the household appliance may be, for example, a washing machine, a dishwasher, a fume hood or an exhaust fan.

 Although the embodiments of the present invention have been described using the example of the use of the integrated circuit in a motor, the field of application of the integrated circuit according to the invention is not limited in the present case.

 It should be noted that the elements in the present description have been explained step-by-step, with each element exhibiting differences from the other elements, and like or similar elements being interrelated.

 It should also be noted that relational terms such as "first," "second," and the like, have been used herein to distinguish between entities or operations without implying that between entities or operations an actual relationship exists. 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 any explicit other limitation, the term "comprising a ..." is to be understood in the sense that, in addition to the enumerated elements, there may be other elements in the process, method, object or device.

 The invention has been explained with reference to the preceding embodiments. 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 ), comprising: a housing, a semiconductor substrate disposed in the housing, an electronic circuit disposed on the semiconductor substrate, and input ports (A1, A2), a first output port (B1), and a second output port (B2) extending from the housing, the electronic circuit comprising: a magnetic field detection circuit ( 20 ) configured to detect an external magnetic field and to generate magnetic field detection information, the first output port (B1) being connected to the magnetic field detection circuit for outputting the magnetic field detection information to an outside of the housing; and an output control circuit ( 30 ) which is configured for control of the integrated circuit ( 400 ) based on at least the magnetic field detection information so that the integrated circuit ( 400 ) operates at least in a first state in which a current flows from the second output port (B2) to an outside of the integrated circuit, or at least in a second state in which a current flows from the outside of the integrated circuit to the second output -Port (B2) flows. An integrated circuit according to claim 1, wherein said magnetic field detection circuit ( 20 ) comprises: a magnetic field sensing element ( 21 ) configured to detect the external magnetic field and to generate an electrical signal; a signal processing unit ( 22 ) configured for amplification and decryption of the electrical signal; and a conversion unit ( 23 ) configured to convert the amplified and decrypted electrical signal into the magnetic field detection information, wherein an output terminal of the conversion unit is connected to the output control circuit (12). 30 ) and connected to the first output port (B1).  An integrated circuit according to claim 1 or 2, wherein the magnetic field detection information is a switchable digital signal. Integrated circuit according to one of Claims 1 to 4, in which the integrated circuit ( 400 ) has exactly four ports extending from the housing. An integrated circuit according to any one of claims 1 to 4, wherein the input ports (A1, A2) comprise an input port suitable for connection to an external AC supply (AC supply) ( 70 . 100 ), and wherein the output control circuit ( 30 ) for an integrated circuit controller ( 400 ) based on a polarity of the AC power supply ( 70 . 100 ) and based on the magnetic field detection information is configured so that the integrated circuit ( 400 ) switches between at least the first state and the second state. Integrated circuit according to one of Claims 1 to 5, the output control circuit ( 400 ) a first switch ( 31 ) and a second switch ( 32 ), wherein the first switch ( 31 ) and the second output port (B2) are connected in a first current path, the second switch ( 32 ) and the second output port ( 2 ) are connected in a second current path whose direction is opposite to the direction of the first current path, and the first switch ( 31 ) and the second switch ( 32 ) are selectively activated based on the magnetic field detection information. Integrated circuit according to one of Claims 1 to 6, the output control circuit ( 30 ) has a first current path in which a current flows out of the second output port (B2), a second current path in which a current flows from the second output port (B2), and a switch inserted in the first current path or the second current path is switched, wherein the switch is configured for the control of the first current path and the second current path based on the magnetic field detection information output from the magnetic field detection circuit, so that the first current path and the second current path are selectively activated. An integrated circuit according to claim 5, wherein the output control circuit ( 30 ) is configured to: control a load current so that the load current flows through the second output port (B2) when the AC power supply ( 70 . 100 ) is in a positive half cycle and the external magnetic field has a first polarity or when the AC power supply ( 70 . 100 ) is in a negative half cycle and the external one Magnetic field having a second polarity opposite to the first polarity, and a control such that no load current flows through the second output port (B2) when the AC power supply ( 70 . 100 ) is in a positive half-cycle and the external magnetic field has the second polarity or when the AC power supply ( 70 . 100 ) is in a negative half-cycle and the external magnetic field has the first polarity. An integrated circuit according to any of claims 1 to 8, wherein the input ports comprise a first input port (A1) and a second input port (A2) suitable for connection to an external AC power source (A1). 70 . 100 ), and wherein the integrated circuit ( 400 ) a rectifier circuit ( 60 ) configured to convert one of the external power supplies ( 70 . 100 ) output AC voltage in a DC voltage. Integrated circuit according to claim 9, wherein the integrated circuit ( 400 ) further comprises a voltage setting circuit ( 80 ) configured for adjusting one of the rectifier circuit ( 60 ) output voltage to a second voltage, wherein the first voltage is a supply voltage of the output control circuit ( 30 ), the second voltage is a supply voltage of the magnetic field detection circuit ( 20 ) and an average of the first voltage is greater than an average of the second voltage.  Motor assembly comprising: an engine; and a motor drive circuit with a magnetic sensor integrated circuit according to one of claims 1 to 10.  A motor assembly according to claim 11, wherein the motor drive circuit further comprises a bidirectional switch connected in series with the motor via an external AC power supply, and wherein the second output port of the magnetic sensor integrated circuit is connected to a control terminal of the bidirectional switch. Motor assembly according to claim 11 or 12, wherein the motor comprises a stator and a permanent rotor and the stator has a stator core and a single-phase winding wound around the stator core. The motor assembly of claim 12, wherein the magnetic sensor integrated circuit is configured for: controlling the bidirectional switch such that the bi-directional switch is activated when the AC power supply is in a positive half-cycle and a magnetic field of the permanent-rotor has a first polarity or when the AC power supply is in a negative half-cycle and the magnetic field of the permanent rotor is opposite to the first polarity having second polarity, and controlling the bidirectional switch so that the bidirectional switch is deactivated when the AC power supply is in a negative half-cycle and the magnetic field of the permanent rotor is in the first polarity or when the AC power supply is in a positive half-cycle and the magnetic field of the permanent-rotor has the second polarity.  The motor assembly of claim 14, wherein the magnetic sensor integrated circuit is configured to: controlling a current so that the current flows from the integrated circuit to the bidirectional switch when a signal output from the AC power supply is in a positive half-cycle and the magnetic field of the permanent-rotor has the first polarity, or controlling a current so that the current flows from the bidirectional switch to the integrated circuit when the signal output from the AC power supply is in a negative half-cycle and the magnetic field of the permanent-rotor has the second polarity.

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