CN210167967U - Motor controller, power supply circuit of motor controller, and vehicle - Google Patents
Motor controller, power supply circuit of motor controller, and vehicle Download PDFInfo
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- CN210167967U CN210167967U CN201921258841.7U CN201921258841U CN210167967U CN 210167967 U CN210167967 U CN 210167967U CN 201921258841 U CN201921258841 U CN 201921258841U CN 210167967 U CN210167967 U CN 210167967U
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Abstract
The utility model discloses a machine controller, machine controller's power supply circuit and vehicle, wherein, machine controller's power supply circuit includes: the device comprises a first digital signal processing chip, a second digital signal processing chip and a complex programmable logic device chip; the first power supply chip provides a working power supply for the first digital signal processing chip and the complex programmable logic device chip; and the second power supply chip provides a working power supply for the second digital signal processing chip. The power supply circuit can realize multi-path output, avoids common cause failure, uses fewer components, has smaller area of the circuit board, and improves the integration level.
Description
Technical Field
The utility model relates to a power technical field, in particular to machine controller's power supply circuit, a machine controller and a vehicle.
Background
At present, a BUCK converter, a BOOST converter, a linear power supply, a push-pull forward converter, a flyback converter, etc. are commonly used as power supply circuits of a motor controller.
In the power supply circuit, the BUCK, BOOST, linear power supply and push-pull power supply circuit can only realize single-path voltage stabilization output generally, the forward converter and the flyback converter can realize multi-path output by using the transformer, but the precision of other paths except the main feedback path in the output multi-path voltage is difficult to control, and the whole circuit has larger volume and poorer integration level because of the transformer.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the above-mentioned technology to a certain extent. Therefore, an object of the utility model is to provide a machine controller's power supply circuit, this power supply circuit not only can realize multiplexed output, avoids the common cause inefficacy, and the components and parts that use are less, and the area of circuit board is less, has improved the integrated level.
A second object of the present invention is to provide a motor controller.
A third object of the present invention is to provide a vehicle.
In order to achieve the above object, the present invention provides in a first aspect a power supply circuit for a motor controller, including: the device comprises a first digital signal processing chip, a second digital signal processing chip and a complex programmable logic device chip; the first power supply chip provides working power supply for the first digital signal processing chip and the complex programmable logic device chip; and the second power supply chip provides a working power supply for the second digital signal processing chip.
According to the utility model discloses a power supply circuit provides working power supply for first digital signal processing chip and complicated programmable logic device chip through first power chip, provides working power supply for second digital signal processing chip through second power chip, not only can realize multiplexed output, avoids the common cause inefficacy, and the components and parts that use are less, and the area of circuit board is less, has improved the integrated level.
In addition, according to the present invention, the power circuit of the motor controller can further have the following additional technical features:
specifically, the power supply circuit described above further includes: the circuit comprises a first inductor, a second inductor, a first transistor and a second transistor; the first power supply chip includes: the voltage-reducing circuit comprises a first voltage-reducing module, a second voltage-reducing module and a third voltage-reducing module; the second power supply chip includes: a fourth voltage reduction module and a fifth voltage reduction module; the input end of the first voltage reduction module is connected with a power supply, and the first voltage reduction module is used for reducing the power supply voltage output by the power supply to obtain a first voltage; a first end of the first inductor is connected with an output end of the first voltage reduction module, a second end of the first inductor is connected with a first pole of the first transistor, a second pole of the first transistor is connected with the first digital signal processing chip, and the second pole of the first transistor outputs a second voltage to the first digital signal processing chip; the input end of the second voltage reduction module is connected with the second end of the first inductor, the output end of the second voltage reduction module is connected with the first digital signal processing chip, the second voltage reduction module is used for carrying out voltage reduction processing on the first voltage to obtain a third voltage, and the third voltage is greater than the second voltage; the input end of the third voltage reduction module is connected with the second end of the first inductor, the output end of the third voltage reduction module is connected with the complex programmable logic device chip, the third voltage reduction module is used for reducing the first voltage to obtain a fourth voltage, and the fourth voltage is equal to the third voltage; the input end of the fourth voltage reduction module is connected with the power supply, and the fourth voltage reduction module is used for reducing the voltage of the power supply voltage to obtain a fifth voltage, wherein the fifth voltage is equal to the first voltage; a first end of the second inductor is connected to an output end of the fourth voltage-reducing module, a second end of the second inductor is connected to a first pole of the second transistor, a second pole of the second transistor is connected to the second digital signal processing chip, and the second pole of the second transistor outputs a sixth voltage to the second digital signal processing chip, where the sixth voltage is equal to the second voltage; the input end of the fifth voltage reduction module is connected with the second end of the second inductor, the output end of the fifth voltage reduction module is connected with the second digital signal processing chip, the fifth voltage reduction module is used for carrying out voltage reduction processing on the fifth voltage to obtain a seventh voltage, and the seventh voltage is equal to the third voltage.
Specifically, the power supply circuit described above further includes: a first sampling circuit; the first power supply chip further includes: the input end of the sixth voltage reduction module is connected with the second end of the first inductor, the output end of the sixth voltage reduction module is connected with the first sampling circuit, the sixth voltage reduction module is used for reducing the voltage of the first voltage to obtain an eighth voltage, and the eighth voltage is greater than the third voltage.
Further, the power supply circuit described above further includes: a second sampling circuit; the second power supply chip further includes: and the input end of the seventh voltage reduction module is connected with the second end of the second inductor, the output end of the seventh voltage reduction module is connected with the second sampling circuit, the seventh voltage reduction module is used for reducing the voltage of the fifth voltage to obtain a ninth voltage, and the ninth voltage is equal to the eighth voltage.
Specifically, the power supply circuit described above further includes: a third sampling circuit; the second power supply chip further includes: and the input end of the eighth voltage reduction module is connected with the second end of the second inductor, the output end of the eighth voltage reduction module is connected with the third sampling circuit, the eighth voltage reduction module is used for reducing the voltage of the fifth voltage to obtain a tenth voltage, and the tenth voltage is equal to the eighth voltage.
Further, the first power supply chip further includes: the first monitoring module is respectively connected with the second pole of the first transistor, the output end of the second voltage reduction module, the output end of the third voltage reduction module and the output end of the sixth voltage reduction module, and the first monitoring module is used for respectively monitoring the second voltage, the third voltage, the fourth voltage and the eighth voltage in undervoltage and overvoltage and outputting an alarm signal according to a monitoring result.
Specifically, the second power supply chip further includes: and the second monitoring module is respectively connected with the second pole of the second transistor, the output end of the fifth voltage reduction module, the output end of the seventh voltage reduction module and the output end of the eighth voltage reduction module, and is used for respectively monitoring the sixth voltage, the seventh voltage, the ninth voltage and the tenth voltage in an undervoltage and overvoltage manner and outputting an alarm signal according to a monitoring result.
Further, the second monitoring module is further configured to: and respectively carrying out over-temperature and over-current monitoring on the temperature and the output current of the second pole of the second transistor, the output end of the fifth voltage-reducing module, the output end of the seventh voltage-reducing module and the output end of the eighth voltage-reducing module, and outputting an alarm signal according to the monitoring result.
Specifically, the first voltage reduction module and the fourth voltage reduction module are BUCK voltage reduction circuits, and the second voltage reduction module, the third voltage reduction module, the fifth voltage reduction module, the sixth voltage reduction module, the seventh voltage reduction module and the eighth voltage reduction module are low dropout linear regulators.
In order to achieve the above object, the second aspect of the present invention provides a motor controller, which includes the first aspect of the present invention.
The utility model discloses a machine controller, first power chip through foretell power supply circuit provides working power supply for first digital signal processing chip and complicated programmable logic device chip, provides working power supply for second digital signal processing chip through second power chip, not only can realize multichannel power output, avoids the common cause inefficacy, and the components and parts that use are less, and the area of circuit board is less, has improved the integrated level.
In order to achieve the above object, the third aspect of the present invention provides a vehicle, including the second aspect of the present invention.
According to the utility model discloses a vehicle, through foretell machine controller, not only can realize multichannel power output, avoids the common cause inefficacy, and the components and parts that use are less, and the area of circuit board is less, has improved the integrated level.
Drawings
FIG. 1 is a power circuit of a motor controller in the related art;
fig. 2 is a block schematic diagram of a power circuit of a motor controller according to an embodiment of the present invention;
fig. 3 is a block schematic diagram of a power circuit of a motor controller according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The present application was made based on the study and recognition of the following problems:
the motor controller based on function safety is because of having increased redundant check-up circuit in a large number, and the circuit power supply of mutual check-up will be independent again, avoids the common cause inefficacy, and will carry out the control of excessive pressure undervoltage overcurrent and overflow to the power, if use current power supply circuit scheme need design multichannel power, uses a large amount of power control chips and voltage monitoring chip, and the circuit board area can be very big. For example, a motor controller based on functional safety needs to be designed, a power supply (+3.3V1 and +1.2V1) of a digital signal processing chip DSP chip 1 and a power supply (+3.3V2 and +1.2V2) of a DSP chip 2 in a circuit are required to be mutually independent, different sampling circuit power supplies +5V1 and +5V2 are required to be mutually independent, the +5V3 needs to be designed in consideration of the fact that the controller needs to be capable of working when one of three paths of current sampling fails, in addition, one path of +3.3V3 for supplying power to a complex programmable logic device chip CPLD chip needs to perform overvoltage and undervoltage monitoring on at least +3.3V2 and +1.2V2, and an alarm signal needs to occur when voltage is abnormal. If the power supply circuit is designed according to the traditional power supply circuit, as shown in fig. 1, 3 BUCK circuits and 3 linear power supply circuits are needed, and 6 power supply chips, 3 inductors, 3 transistors, at least 4 voltage monitoring chips and 1 logic gate chip are needed in total for main devices. The number of components and parts adopted in the mode is large, the area of a circuit board of the power circuit can be increased, and the cost can be increased.
The power supply circuit of the motor controller, and the vehicle according to the embodiments of the present invention will be described with reference to the drawings.
Fig. 2 is a block schematic diagram of a power circuit of a motor controller according to an embodiment of the present invention. As shown in fig. 2, the power supply circuit includes: the device comprises a first digital signal processing chip DSP1, a second digital signal processing chip DSP2, a complex programmable logic device chip CPLD, a first power supply chip IC1 and a second power supply chip IC 2.
The first power chip IC1 provides a working power supply for the first digital signal processing chip DSP1 and the complex programmable logic device chip CPLD; the second power chip IC2 provides operating power to the second digital signal processing chip DSP 2.
Specifically, a plurality of linear power supplies are integrated in the power supply chip, and stable voltage output can be provided without adding excessive components, so that the area of the circuit board can be reduced, and the integration level of the power supply circuit is improved. Because the digital signal processing chip is important for the motor controller, the power circuit adopts different power chips to respectively supply power to different digital signal processing chips so as to realize multi-path output, thereby ensuring the independent power supply of the digital signal processing chips, avoiding common cause failure (meaning that two or more units simultaneously fail due to a certain common reason in a system) in the aspect of power supply and improving the reliability of work.
Further, according to an embodiment of the present invention, as shown in fig. 3, the power circuit may further include: a first inductor L1, a second inductor L2, a first transistor Q1, and a second transistor Q2. The first power supply chip IC1 includes: a first voltage reduction module 101, a second voltage reduction module 102, and a third voltage reduction module; the second power supply chip IC2 includes: a fourth voltage-reducing module 104 and a fifth voltage-reducing module 105.
The input end of the first voltage reduction module 101 is connected to the power supply VCC, and the first voltage reduction module 101 is configured to perform voltage reduction processing on the power supply voltage output by the power supply VCC to obtain a first voltage V1. A first end of the first inductor L1 is connected to the output end of the first buck module 101, a second end of the first inductor L2 is connected to a first pole of the first transistor Q1, a second pole of the first transistor Q2 is connected to the first DSP1, and a second pole of the first transistor Q1 outputs a second voltage V2 to the first DSP 1.
The input end of the second voltage reduction module 102 is connected to the second end of the first inductor L1, the output end of the second voltage reduction module 102 is connected to the first digital signal processing chip DSP1, the second voltage reduction module 102 is configured to reduce the first voltage V1 to obtain a third voltage V3, and the third voltage V3 is greater than the second voltage V2. The input end of the third voltage-reducing module 103 is connected to the second end of the first inductor L1, the output end of the third voltage-reducing module 103 is connected to the CPLD, the third voltage-reducing module 103 is configured to reduce the first voltage V1 to obtain a fourth voltage V4, and the fourth voltage V4 is equal to the third voltage V3.
The input end of the fourth voltage-reducing module 104 is connected to the power supply VCC, and the fourth voltage-reducing module 104 is configured to reduce the voltage of the power supply VCC to obtain a fifth voltage V5, where the fifth voltage V5 is equal to the first voltage V1. A first end of the second inductor L2 is connected to an output end of the fourth voltage-dropping module 104, a second end of the second inductor L2 is connected to a first pole of a second transistor Q2, a second pole of the second transistor Q2 is connected to the second DSP2, a second pole of the second transistor Q2 outputs a sixth voltage V6 to the second DSP2, and the sixth voltage V6 is equal to the second voltage V2.
The input end of the fifth voltage-reducing module 105 is connected to the second end of the second inductor L2, the output end of the fifth voltage-reducing module 105 is connected to the second digital signal processing chip DSP2, the fifth voltage-reducing module 105 is configured to reduce the fifth voltage V5 to obtain a seventh voltage V7, and the seventh voltage V7 is equal to the third voltage V3.
Specifically, the supply voltage output by the power supply VCC is generally +12V, the first voltage V1 may be +6V, the second voltage V2 may be +1.2V, the third voltage V3 may be +3.3V, the fourth voltage V4 may be +3.3V, the fifth voltage V5 may be +6V, the sixth voltage V6 may be +1.2V, and the seventh voltage V7 may be + 3.3V. The first BUCK module 101 and the fourth BUCK module 104 may be BUCK circuits, and the second BUCK module 102, the third BUCK module 103, and the fifth BUCK module 105 may be LDOs (Low Dropout regulators). The first transistor Q1 and the second transistor Q2 may be MOS (Metal Oxide Semiconductor) transistors.
The power supplies of the DSP1 are V2 and V3, and the power supply of the DSP2 is V6 and V7, where V2 and V6(+1.2V) are obtained by the first voltage-dropping module 101 and the fourth voltage-dropping module 104 respectively dropping +12V voltage outputted by the power supply VCC to +6V voltage, and then dropping the +6V voltage to +1.2V by respectively controlling the duty ratios of on and off of the transistors Q1 and Q2. Meanwhile, V3 and V7(+3.3V) are obtained by the second buck module 102 and the fifth buck module 105(LDO) respectively stepping down the +6V voltage output by the first buck module 101 and the fourth buck module 104. Therefore, the power supply (V2 and V3) of the DSP1 and the power supply (V6 and V7) of the DSP2 respectively use one power supply chip, the power supply independence of the two DSP chips is ensured, and common cause failure in the aspect of power supply is eliminated. The power supply voltage V4 of the CPLD is obtained by the third buck module 103 stepping down the +6V voltage output by the first buck module 101.
Further, according to an embodiment of the present invention, as shown in fig. 3, the power circuit may further include: the first sampling circuit 201, the first power chip IC1 may further include: the sixth voltage-reducing module 106 is configured to connect an input end of the sixth voltage-reducing module 106 to a second end of the first inductor L1, connect an output end of the sixth voltage-reducing module 106 to the first sampling circuit 201, and enable the sixth voltage-reducing module 106 to reduce the first voltage V1 to obtain an eighth voltage V8, where the eighth voltage V8 is greater than the third voltage V3.
Specifically, the sixth voltage reducing module 106 may be an LDO, and the eighth voltage V8 may be + 5V. The supply voltage (V8) of the first sampling circuit 201 is obtained by the sixth voltage-dropping module 106 dropping the first voltage V1.
According to an embodiment of the present invention, as shown in fig. 3, the power circuit further includes: a second sampling circuit 202. The second power supply chip IC2 may further include: the input end of the seventh voltage-reducing module 107 is connected to the second end of the second inductor L2, the output end of the seventh voltage-reducing module 107 is connected to the second sampling circuit 202, the seventh voltage-reducing module 107 is configured to reduce the fifth voltage V5 to obtain a ninth voltage V9, and the ninth voltage V9 is equal to the eighth voltage V8.
Specifically, the seventh voltage dropping module 107 may be an LDO, and the ninth voltage V9 may be + 5V. The supply voltage (V9) of the second sampling circuit 202 is obtained by the seventh voltage-dropping module 107 dropping the fifth voltage V5.
According to an embodiment of the present invention, as shown in fig. 3, the power circuit further includes: a third sampling circuit 203; the second power supply chip IC2 may further include: the input end of the eighth voltage-reducing module 108 is connected to the second end of the second inductor L2, the output end of the eighth voltage-reducing module 108 is connected to the third sampling circuit 203, the eighth voltage-reducing module 108 is configured to reduce the voltage of the fifth voltage V5, so as to obtain a tenth voltage V10, and the tenth voltage V10 is equal to the eighth voltage V8.
Specifically, the eighth buck module 108 may be an LDO, and the tenth voltage V10 may be + 5V. The supply voltage (V10) of the third sampling circuit 203 is obtained by the eighth voltage-dropping module 108 dropping the fifth voltage V5.
As can be seen from fig. 2, the power supply (V2 and V3) of the DSP1 and the power supply (V6 and V7) of the DSP2 each use one power chip, so that the power supply independence of the two DSP chips is ensured, and common cause failure in power supply is eliminated. Different power supply chips are used for the first sampling circuit 201 and the second sampling circuit 202, so that the power supply independence of the sampling circuits verified mutually is guaranteed, and common cause failure in the aspect of power supply is eliminated. The power chips IC1 and IC2 select the latest 4-channel output power chips, 2 power chips are firstly reduced to +6V by BUCK, then +6V is respectively and linearly reduced to 4 paths for output, IC1 outputs +3.3V, +1.2V, +3.3V, +5V, and IC2 outputs +3.3V, +1.2V, + 5V. The voltage difference of +1.2V and +1.2V due to linear voltage reduction can be 6-1.2-4.8V, the current flowing through the transistors Q1 and Q2 is calculated according to the maximum current 600mA, the maximum heat dissipation of the transistors Q1 and Q2 can be 4.8-0.6-2.88W, and therefore the transistors Q1 and Q2 with the voltage reduction of 1.2V use external devices to reduce the temperature rise of the power supply chip.
According to an embodiment of the present invention, the first power chip IC1 further includes: the first monitoring module 301, the first monitoring module 301 is respectively connected to the second pole of the first transistor Q1, the output terminal of the second voltage-dropping module 102, the output terminal of the third voltage-dropping module 103, and the output terminal of the sixth voltage-dropping module 106, and the first monitoring module 301 is configured to respectively monitor the second voltage V2, the third voltage V3, the fourth voltage V4, and the eighth voltage V8 for undervoltage and overvoltage, and output an alarm signal according to a monitoring result.
The first monitoring module 301 may be further configured to: the over-temperature and over-current monitoring is respectively performed on the temperature and the output current of the second pole of the first transistor Q1, the output end of the second voltage-reducing module 102, the output end of the third voltage-reducing module 103 and the output end of the sixth voltage-reducing module 106, and an alarm signal is output according to the monitoring result.
According to an embodiment of the present invention, the second power chip IC2 may further include: and the second monitoring module 302, the second monitoring module 302 is respectively connected to the second pole of the second transistor Q2, the output terminal of the fifth voltage-dropping module 105, the output terminal of the seventh voltage-dropping module 107, and the output terminal of the eighth voltage-dropping module 108, and the second monitoring module is configured to respectively monitor the sixth voltage V6, the seventh voltage V7, the ninth voltage V9, and the tenth voltage V10 for undervoltage and overvoltage, and output an alarm signal according to a monitoring result.
The second monitoring module 302 may also be configured to: and respectively monitoring the temperature and the output current of the second pole of the second transistor Q2, the output end of the fifth voltage-reducing module V5, the output end of the seventh voltage-reducing module V7 and the output end of the eighth voltage-reducing module V8, and outputting an alarm signal according to the monitoring result.
Specifically, monitoring modules are integrated in a first power supply chip IC1 and a second power supply chip IC2 respectively, and the monitoring modules can monitor the voltage output by the voltage reduction circuits in the corresponding chips in an undervoltage mode and an overvoltage mode respectively and output alarm signals when the output voltage is abnormal; in addition, the monitoring module can also respectively monitor the over-temperature and the over-current of the temperature of the output end of the voltage reduction circuit in the corresponding chip and the output current, and sends out an alarm signal when the temperature of the output end and the output current are abnormal, so that the monitoring and diagnosis strategy is more comprehensive.
Compared with the power circuit shown in fig. 1, the power circuit of the embodiment of the present invention uses fewer components, the number of power chips is reduced from 6 to 2, and the number of transistors, inductors and diodes is reduced from 3 to 2, so that 2 under-voltage monitoring chips and 2 over-voltage monitoring chips are eliminated, and the area of the circuit board is smaller and the cost is lower.
Moreover, the power supply circuit has diagnosis on each possible failure in the power supply circuit, including overvoltage, undervoltage, overcurrent, overtemperature monitoring and the like, and the power supply module (the voltage reduction module and the sampling module) and the monitoring module for monitoring the function module are separately powered, so that the power supply independence of the two parts of circuits is ensured, common cause failure is avoided, and the reliability of the system is improved.
In conclusion, according to the utility model discloses power supply circuit, provide working power supply for first digital signal processing chip and complicated programmable logic device chip through first power chip, provide working power supply for second digital signal processing chip through second power chip, not only can realize multiplexed output, avoid causing the inefficacy altogether, and the components and parts of use are less, the area of circuit board is less, the integrated level has been improved, and simultaneously, the safety diagnosis strategy is more comprehensive, except that control excessive pressure, under-voltage, still overflow, monitor function such as excess temperature, failure diagnosis coverage is higher.
Furthermore, the utility model also provides a machine controller, it includes the utility model discloses foretell machine controller's power supply circuit.
The utility model discloses machine controller, first power chip through foretell power supply circuit provides working power supply for first digital signal processing chip and complicated programmable logic device chip, provides working power supply for second digital signal processing chip through second power chip, not only can realize multichannel power output, avoids the common cause inefficacy, and the components and parts that use are less, and the area of circuit board is less, has improved the integrated level.
The utility model discloses still provide a vehicle, including foretell machine controller.
According to the utility model discloses vehicle, through foretell machine controller, not only can realize multichannel power output, avoid the common cause inefficacy, and the components and parts that use are less, and the area of circuit board is less, has improved the integrated level.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (12)
1. A power supply circuit for a motor controller, comprising:
the device comprises a first digital signal processing chip, a second digital signal processing chip and a complex programmable logic device chip;
the first power supply chip provides working power supply for the first digital signal processing chip and the complex programmable logic device chip;
and the second power supply chip provides a working power supply for the second digital signal processing chip.
2. The power supply circuit according to claim 1, further comprising: the circuit comprises a first inductor, a second inductor, a first transistor and a second transistor;
the first power supply chip includes: the voltage-reducing circuit comprises a first voltage-reducing module, a second voltage-reducing module and a third voltage-reducing module;
the second power supply chip includes: a fourth voltage reduction module and a fifth voltage reduction module;
the input end of the first voltage reduction module is connected with a power supply, and the first voltage reduction module is used for reducing the power supply voltage output by the power supply to obtain a first voltage;
a first end of the first inductor is connected with an output end of the first voltage reduction module, a second end of the first inductor is connected with a first pole of the first transistor, a second pole of the first transistor is connected with the first digital signal processing chip, and the second pole of the first transistor outputs a second voltage to the first digital signal processing chip;
the input end of the second voltage reduction module is connected with the second end of the first inductor, the output end of the second voltage reduction module is connected with the first digital signal processing chip, the second voltage reduction module is used for carrying out voltage reduction processing on the first voltage to obtain a third voltage, and the third voltage is greater than the second voltage;
the input end of the third voltage reduction module is connected with the second end of the first inductor, the output end of the third voltage reduction module is connected with the complex programmable logic device chip, the third voltage reduction module is used for reducing the first voltage to obtain a fourth voltage, and the fourth voltage is equal to the third voltage;
the input end of the fourth voltage reduction module is connected with the power supply, and the fourth voltage reduction module is used for reducing the voltage of the power supply voltage to obtain a fifth voltage, wherein the fifth voltage is equal to the first voltage;
a first end of the second inductor is connected to an output end of the fourth voltage-reducing module, a second end of the second inductor is connected to a first pole of the second transistor, a second pole of the second transistor is connected to the second digital signal processing chip, and the second pole of the second transistor outputs a sixth voltage to the second digital signal processing chip, where the sixth voltage is equal to the second voltage;
the input end of the fifth voltage reduction module is connected with the second end of the second inductor, the output end of the fifth voltage reduction module is connected with the second digital signal processing chip, the fifth voltage reduction module is used for carrying out voltage reduction processing on the fifth voltage to obtain a seventh voltage, and the seventh voltage is equal to the third voltage.
3. The power supply circuit according to claim 2, further comprising: a first sampling circuit;
the first power supply chip further includes:
the input end of the sixth voltage reduction module is connected with the second end of the first inductor, the output end of the sixth voltage reduction module is connected with the first sampling circuit, the sixth voltage reduction module is used for reducing the voltage of the first voltage to obtain an eighth voltage, and the eighth voltage is greater than the third voltage.
4. The power supply circuit according to claim 3, further comprising: a second sampling circuit;
the second power supply chip further includes:
and the input end of the seventh voltage reduction module is connected with the second end of the second inductor, the output end of the seventh voltage reduction module is connected with the second sampling circuit, the seventh voltage reduction module is used for reducing the voltage of the fifth voltage to obtain a ninth voltage, and the ninth voltage is equal to the eighth voltage.
5. The power supply circuit according to claim 4, further comprising: a third sampling circuit;
the second power supply chip further includes:
and the input end of the eighth voltage reduction module is connected with the second end of the second inductor, the output end of the eighth voltage reduction module is connected with the third sampling circuit, the eighth voltage reduction module is used for reducing the voltage of the fifth voltage to obtain a tenth voltage, and the tenth voltage is equal to the eighth voltage.
6. The power supply circuit according to claim 3, wherein the first power supply chip further comprises:
the first monitoring module is respectively connected with the second pole of the first transistor, the output end of the second voltage reduction module, the output end of the third voltage reduction module and the output end of the sixth voltage reduction module, and the first monitoring module is used for respectively monitoring the second voltage, the third voltage, the fourth voltage and the eighth voltage in undervoltage and overvoltage and outputting an alarm signal according to a monitoring result.
7. The power supply circuit of claim 6, wherein the first monitoring module is further configured to:
and respectively carrying out over-temperature and over-current monitoring on the temperature and the output current of the second pole of the first transistor, the output end of the second voltage-reducing module, the output end of the third voltage-reducing module and the output end of the sixth voltage-reducing module, and outputting an alarm signal according to the monitoring result.
8. The power supply circuit according to claim 5, wherein the second power supply chip further comprises:
and the second monitoring module is respectively connected with the second pole of the second transistor, the output end of the fifth voltage reduction module, the output end of the seventh voltage reduction module and the output end of the eighth voltage reduction module, and is used for respectively monitoring the sixth voltage, the seventh voltage, the ninth voltage and the tenth voltage in an undervoltage and overvoltage manner and outputting an alarm signal according to a monitoring result.
9. The power supply circuit of claim 8, wherein the second monitoring module is further configured to:
and respectively carrying out over-temperature and over-current monitoring on the temperature and the output current of the second pole of the second transistor, the output end of the fifth voltage-reducing module, the output end of the seventh voltage-reducing module and the output end of the eighth voltage-reducing module, and outputting an alarm signal according to the monitoring result.
10. The power supply circuit according to claim 5, wherein the first voltage-reducing module and the fourth voltage-reducing module are BUCK voltage-reducing circuits, and the second voltage-reducing module, the third voltage-reducing module, the fifth voltage-reducing module, the sixth voltage-reducing module, the seventh voltage-reducing module and the eighth voltage-reducing module are low dropout linear regulators.
11. A motor controller, comprising: a power supply circuit for a motor controller as claimed in any one of claims 1 to 10.
12. A vehicle, characterized by comprising: a motor controller according to claim 11.
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| CN201921258841.7U CN210167967U (en) | 2019-07-31 | 2019-07-31 | Motor controller, power supply circuit of motor controller, and vehicle |
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| CN201921258841.7U CN210167967U (en) | 2019-07-31 | 2019-07-31 | Motor controller, power supply circuit of motor controller, and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114655145A (en) * | 2020-12-24 | 2022-06-24 | 上海汽车集团股份有限公司 | Power supply method of domain controller and domain controller |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114655145A (en) * | 2020-12-24 | 2022-06-24 | 上海汽车集团股份有限公司 | Power supply method of domain controller and domain controller |
| CN114655145B (en) * | 2020-12-24 | 2023-12-22 | 上海汽车集团股份有限公司 | Power supply method of domain controller and domain controller |
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