Charge pump, charge pump control method, motor device and storage medium

Abstract

Provided in the embodiments of the present application are a charge pump, a charge pump control method, a motor device and a storage medium. A first current source is connected to a first switch module; a second current source is connected to a second switch module; the first current source is used for discharging a current from a control end of the first switch module; the second current source is used for providing a current for a control end of the second switch module; a third switch module is separately connected to the first switch module and the first current source, and the third switch module provides a current for the control end of the first switch module; a fourth switch module is separately connected to the second switch module and the second current source, and the fourth switch module discharges a current from the control end of the second switch module; an energy storage module, a power supply, a diode branch, the first switch module and the second switch module form a charging and discharging loop. The peak current of the charge pump can be reduced during charging and discharging.

Description

Charge pump, charge pump control method, motor device and storage medium Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a charge pump, a charge pump control method, a motor device, and a storage medium. Background Art

[0002] The switching transistors within a charge pump are typically driven directly by digital signals. They can only operate in either the fully on or fully off state. This control method is simple and reliable, but it also generates short, high-amplitude peak currents during the charge pump's charge and discharge cycles. These peak currents can cause electromagnetic interference (EMI) and voltage drop. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a charge pump, a charge pump control method, a motor device and a storage medium to reduce the peak current of the charge pump during charging and discharging, thereby reducing the electromagnetic interference and voltage drop generated when the charge pump is working.

[0004] In a first aspect, an embodiment of the present application provides a charge pump, comprising: a first switch module, a second switch module, a third switch module, a fourth switch module, a first current source, a second current source, an energy storage module, a diode branch, and a power supply;

[0005] The first current source is connected to the first switch module, and the second current source is connected to the second switch module. The first current source is used to discharge current to the control end of the first switch module, and the second current source is used to provide current to the control end of the second switch module.

[0006] The third switch module is connected to the first switch module and the first current source respectively, and the third switch module provides current to the control end of the first switch module;

[0007] The fourth switch module is connected to the second switch module and the second current source respectively, and the fourth switch module discharges current for the control terminal of the second switch module;

[0008] The energy storage module, the power supply, the first switch module and the second switch module form a charge and discharge loop.

[0009] In the above implementation process, the energy storage module, the power supply, the first switch module and the second switch module form a charge and discharge loop. The first switch module and the second switch module are generally composed of power switch tubes. The first current source is connected to the first switch module, and the second current source is connected to the second switch module. The first current source is used to discharge current to the control end of the first switch module, and the second current source is used to provide current to the control end of the second switch module; the third switch module provides current to the first current source and the control end of the first switch module, and the fourth switch module discharges current to the second current source and the control end of the second switch module, so that the third switch module and the fourth switch module control the working state of the charge pump. The first current source and the second current source enable the first switch module and the second switch module to be slowly turned on, thereby avoiding the first switch module and the second switch module in the charge and discharge loop from generating a high peak current, thereby reducing the electromagnetic interference and voltage drop generated when the charge pump is working.

[0010] Furthermore, the first switch module is a P-channel MOS tube;

[0011] The second switch module is an N-channel MOS tube;

[0012] The third switch module is a P-channel MOS tube;

[0013] The fourth switch module is an N-channel MOS tube;

[0014] The gate of the first switch module is connected to the drain of the third switch module;

[0015] The source of the first switch module is connected to the power supply;

[0016] The drain of the first switch module is connected to the drain of the second switch module;

[0017] The gate of the second switch module is connected to the drain of the fourth switch module;

[0018] The source of the second switch module is connected to the negative electrode of the power supply or the ground terminal;

[0019] The source of the third switch module is connected to the power supply;

[0020] The source of the fourth switch module is connected to the negative electrode of the power supply or the ground terminal;

[0021] The input end of the first current source is connected to the gate of the first switch module and the drain of the third switch module respectively;

[0022] The output end of the second current source is connected to the gate of the second switch module and the drain of the fourth switch module respectively.

[0023] In a second aspect, an embodiment of the present application provides a charge pump control method, which is applied to the charge pump described in the first aspect, and the method includes:

[0024] In response to a first signal, controlling the third switch module to be in an off state and the fourth switch module to be in an on state, so that the first current source discharges current to the control terminal of the first switch module, and the fourth switch module discharges current to the control terminal of the second current source and the second switch module;

[0025] In response to the second signal, the third switch module is controlled to be in an on state and the fourth switch module is controlled to be in an off state, so that the third switch module provides current to the first current source and the control end of the first switch module, and the second current source provides current to the control end of the second switch module.

[0026] In the above implementation process, by controlling the working states of the third switch module and the fourth switch module, the first current source and the second current source are controlled to charge the control ends of the first switch module and the second switch module, thereby enabling the first switch module and the second switch module to be slowly turned on, thereby avoiding the first switch module and the second switch module in the charge and discharge loop from generating a high peak current, and reducing the electromagnetic interference and voltage drop generated when the charge pump is working.

[0027] In a third aspect, an embodiment of the present application provides a charge pump control device, comprising:

[0028] a first execution module, configured to control the third switch module to be in an off state and the fourth switch module to be in an on state in response to a first signal, so that the first current source discharges current through the control terminal of the first switch module, and the fourth switch module discharges current through the second current source and the control terminal of the second switch module;

[0029] The first execution module is further configured to control the third switch module to be in an on state and the fourth switch module to be in an off state in response to a second signal, so that the third switch module provides current to the first current source and the control end of the first switch module, and the second current source provides current to the control end of the second switch module.

[0030] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in any one of the first aspects when executing the computer program.

[0031] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium having instructions stored thereon. When the instructions are executed on a computer, the computer executes the steps of the method described in the second aspect.

[0032] Other features and advantages disclosed in the present application will be described in the following description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology disclosed in the present application.

[0033] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0035] FIG1 is a first schematic diagram of a charge pump provided in an embodiment of the present application;

[0036] FIG2 is a second schematic diagram of a charge pump provided in an embodiment of the present application;

[0037] FIG3 is a flow chart of a charge pump control method according to an embodiment of the present application;

[0038] FIG4 is a schematic structural diagram of a charge pump control device provided in an embodiment of the present application;

[0039] FIG5 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0041] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0042] 1 , the present application provides a charge pump, including: a first switch module M1, a second switch module M2, a third switch module M3, a fourth switch module M4, a first current source I1, a second current source I2, an energy storage module C, a diode branch, and a power supply VDD;

[0043] A first current source I1 is connected to the first switch module M1, and a second current source I2 is connected to the second switch module M2. The first current source I1 is used to discharge current to the control end of the first switch module M1, and the second current source I2 is used to provide current to the control end of the second switch module M2.

[0044] The third switch module M3 is connected to the first switch module M1 and the first current source I1 respectively, and the third switch module M3 is used to provide current to the control end of the first switch module M1;

[0045] The fourth switch module M4 is connected to the second switch module M2 and the second current source I2 respectively, and the fourth switch module M4 is used to discharge current to the control end of the second switch module M2;

[0046] The energy storage module C, the power supply VDD, the first switch module M1 and the second switch module M2 form a charge and discharge loop.

[0047] A first switch module M1, a second switch module M2, a third switch module M3, a fourth switch module M4, a first current source I1, a second current source I2, an energy storage module C, a diode branch and a power supply VDD;

[0048] It is understandable that the power supply VDD may include multiple sub-power supplies, and the first current source I1, the second current source I2, the first switch module M1, the second switch module M2, the third switch module M3, and the fourth switch module M4 may be connected to their own adapted sub-power supplies.

[0049] In the embodiment of the present application, the control end of the switch module is the gate of the MOS tube.

[0050] In the above implementation process, the energy storage module C, the power supply VDD, the first switch module M1 and the second switch module M2 form a charge-discharge loop. The first switch module M1 and the second switch module M2 are generally composed of power switch tubes. The first current source I1 is connected to the first switch module M1, and the second current source I2 is connected to the second switch module M2. The first current source I1 is used to discharge current to the control end of the first switch module M1, and the second current source I2 is used to provide current to the control end of the second switch module M2; the third switch module M3 provides current to the control end of the first switch module M1, and the fourth switch module M4 discharges current to the control end of the first switch module M1, so that the third switch module M3 and the fourth switch module M4 control the working state of the charge pump. The first current source I1 and the second current source I2 enable the first switch module M1 and the second switch module M2 to be slowly turned on, thereby avoiding the first switch module M1 and the second switch module M2 in the charge-discharge loop from generating a high peak current, thereby reducing the electromagnetic interference and voltage drop generated when the charge pump is working.

[0051] In some embodiments, when the first switch module M1 is a P-channel MOS transistor; the second switch module M2 is an N-channel MOS transistor; the third switch module M3 is a P-channel MOS transistor; and the fourth switch module M4 is an N-channel MOS transistor, the specific circuit structure of the charge pump is shown in FIG2 : the gate of the first switch module M1 is connected to the drain of the third switch module M3; the source of the first switch module M1 is connected to the power supply VDD; the drain of the first switch module M1 is connected to the drain of the second switch module M2; the gate of the second switch module M2 is connected to the drain of the fourth switch module M4; the source of the third switch module M3 is connected to the power supply VDD; the input end of the first current source I1 is connected to the gate of the first switch module M1 and the drain of the third switch module M3 respectively; and the output end of the second current source I2 is connected to the gate of the second switch module M2 and the drain of the fourth switch module M4 respectively.

[0052] It should be noted that the power supply VDD may include multiple sub-power supplies, and other components are connected to the sub-power supplies that can be adapted to them.

[0053] The diode circuit includes a first diode D1 and a second diode D2. The anode of the first diode D1 is connected to the power supply VDD; the anode of the second diode D2 is connected to the cathode of the first diode D1, and the cathode of the second diode D2 is connected to the output of the charge pump. The first terminal of the energy storage module C is connected to the drain of the first switch module M1 and the drain of the second switch module M2; the second terminal of the energy storage module C is connected to the cathode of the first diode D1. The source of the second switch module M2 and the source of the fourth switch module M4 are grounded.

[0054] CLK1 is a control signal for controlling the third switch module M3 , and CLK2 is a control signal for controlling the fourth switch module M4 .

[0055] In some embodiments, the energy storage module C is a capacitor.

[0056] 3 , an embodiment of the present application further provides a charge pump control method, which is applied to the above-mentioned charge pump, including: S31: in response to a first signal, controlling the third switch module M3 to be in an off state and the fourth switch module M4 to be in an on state, so that the first current source I1 is a control terminal of the first switch module M1 and discharges current, and the fourth switch module M4 is a control terminal of the second current source I2 and the second switch module M2 and discharges current;

[0057] S32: In response to the second signal, control the third switch module M3 to be in the on state and the fourth switch module M4 to be in the off state, so that the third switch module M3 provides current to the first current source I1 and the control end of the first switch module M1, and the second current source I2 provides current to the control end of the second switch module M2.

[0058] It should be noted that S31 and S32 are executed alternately and repeatedly.

[0059] Referring to Figure 2 , when the capacitor is in a discharging state, the third switch module M3 is turned off and the fourth switch module M4 is turned on. At this time, the second switch module M2 is turned off, and the gate capacitance of the first switch module M1 is discharged by the first current source I1. The gate voltage of the first switch module M1 gradually decreases, and the first switch module M1 slowly transitions from off to on. Its current first increases, then decreases, and finally reaches 0. When the capacitor is in a charging state, the third switch module M3 is turned on and the fourth switch module M4 is turned off. At this time, the first switch module M1 is turned off, and the gate capacitance of the second switch module M2 is charged by the second current source I2. The gate voltage of the second switch module M2 gradually increases, and the second switch module M2 slowly transitions from off to on. Its current first increases, then decreases, and finally reaches 0.

[0060] 4 , an embodiment of the present application further provides a charge pump control device, which is applied to the above-mentioned charge pump. The device includes: a first execution module 41, which is used to respond to a first signal and a second signal;

[0061] The first execution module 41 is configured to control the third switch module M3 to be in an off state and the fourth switch module M4 to be in an on state in response to the first signal, so that the first current source I1 discharges current from the control terminal of the first switch module M1, and the fourth switch module M4 discharges current from the control terminal of the second current source I2 and the second switch module M2;

[0062] The first execution module 41 is further configured to respond to a second signal to control the third switch module M3 to be in an on state and the fourth switch module M4 to be in an off state, so that the third switch module M3 provides current to the first current source I1 and the control end of the first switch module M1, and the second current source I2 provides current to the control end of the second switch module M2.

[0063] The present application also provides an electronic device. Please refer to Figure 5, which is a block diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include a processor 51, a communication interface 52, a memory 53, and at least one communication bus 54. Among them, the communication bus 54 is used to realize direct connection and communication between these components. Among them, the communication interface 52 of the electronic device in the embodiment of the present application is used to communicate signaling or data with other node devices. The processor 51 can be an integrated circuit chip with signal processing capabilities.

[0064] The processor 51 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor, or the processor 51 can also be any conventional processor.

[0065] The memory 53 may be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc. The memory 53 stores computer-readable instructions. When the processor 51 executes the computer-readable instructions, the electronic device may perform the steps of the above method embodiment.

[0066] Optionally, the electronic device may further include a storage controller and an input / output unit.

[0067] The memory 53, storage controller, processor 51, peripheral interface, and input / output units are electrically connected to each other, directly or indirectly, to enable data transmission or interaction. For example, these components can be electrically connected to each other via one or more communication buses 54. The processor 51 is configured to execute executable modules stored in the memory 53, such as software function modules or computer programs included in the electronic device.

[0068] The input and output unit is used to provide users with the ability to create tasks and to create optional time periods or preset execution times for the tasks to enable interaction between the user and the server. The input and output unit can be, but is not limited to, a mouse and a keyboard.

[0069] It is understood that the structure shown in Figure 5 is merely illustrative, and the electronic device may include more or fewer components than shown in Figure 5, or have a configuration different from that shown in Figure 5. Each component shown in Figure 5 may be implemented using hardware, software, or a combination thereof.

[0070] An embodiment of the present application further provides a storage medium having instructions stored thereon. When the instructions are run on a computer, the computer program is executed by a processor to implement the method described in the method embodiment. To avoid repetition, details are not given here.

[0071] The present application also provides a computer program product, which, when running on a computer, enables the computer to execute the method described in the method embodiment.

[0072] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0073] In addition, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0074] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0075] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0076] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0077] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A charge pump, characterized in that: include: A first switch module, a second switch module, a third switch module, a fourth switch module, a first current source, a second current source, an energy storage module, a diode branch and a power supply; The first current source is connected to the first switch module, the second current source is connected to the second switch module, the first current source is used to discharge current to the control end of the first switch module, and the second current source is used to provide current to the control end of the second switch module; The third switch module is connected to the first switch module and the first current source respectively, and the third switch module provides current to the control end of the first switch module; The fourth switch module is connected to the second switch module and the second current source respectively, and the fourth switch module provides current to the control end of the second switch module; The energy storage module, the power supply, the diode branch, the first switch module and the second switch module form a charge and discharge loop.

2. The charge pump according to claim 1, wherein: The first switch module is a P-channel MOS tube; The second switch module is an N-channel MOS tube; The third switch module is a P-channel MOS tube; The fourth switch module is an N-channel MOS tube; The gate of the first switch module is connected to the drain of the third switch module; The source of the first switch module is connected to the power supply; The drain of the first switch module is connected to the drain of the second switch module; The gate of the second switch module is connected to the drain of the fourth switch module; The source of the second switch module is connected to the negative electrode of the power supply or the ground terminal; The source of the third switch module is connected to the power supply; The source of the fourth switch module is connected to the negative electrode of the power supply or the ground terminal; The input end of the first current source is respectively connected to the gate of the first switch module and the drain of the third switch module; The output end of the second current source is connected to the gate of the second switch module and the drain of the fourth switch module respectively.

3. A charge pump control method, characterized in that: Applied to the charge pump of claim 1, the method comprising: In response to the first signal, the third switch module is controlled to be in an off state and the fourth switch module is in an on state, so that the first current source discharges current for the control end of the first switch module and the fourth switch module discharges current for the control end of the second current source and the second switch module; In response to the second signal, the third switch module is controlled to be in an on state and the fourth switch module is in an off state, so that the third switch module provides current to the first current source and the control end of the first switch module, and the second current source provides current to the control end of the second switch module.

4. A charge pump control device, characterized in that: Applied to the charge pump of claim 1, the device comprising: A first execution module, configured to control the third switch module to be in an off state and the fourth switch module to be in an on state in response to a first signal, so that the first current source discharges current through the control end of the first switch module and the fourth switch module discharges current through the control end of the second current source and the second switch module; The first execution module is also used to control the third switch module to be in an on state and the fourth switch module to be in an off state in response to the second signal, so that the third switch module provides current to the first current source and the control end of the first switch module, and the second current source provides current to the control end of the second switch module.

5. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method according to claim 3 when executing the computer program.

6. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed on a computer, the computer is caused to perform the steps of the method according to claim 3.

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