Low-power-consumption switching circuit for embedded equipment
By introducing a switching circuit to control the power supply of peripherals and their surrounding circuits, the problem of balancing performance and power consumption in traditional embedded low-power circuit design is solved, achieving high performance and low power consumption of peripherals in a low-power state, and optimizing the low-power design of embedded devices.
Patent Information
- Application Number
- CN202422894899.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In traditional embedded low-power circuit design, peripherals and their surrounding circuits are directly connected to the microcontroller unit, which means that functional performance must be sacrificed in pursuit of low power consumption, making it difficult to achieve a balance between high performance and low power consumption.
By introducing a switching circuit, the microcontroller unit controls the power supply of peripherals and their surrounding circuits through the control circuit, thereby switching between low-power mode and working mode. In low-power mode, the peripherals and their surrounding circuits are completely powered off, and only the microcontroller unit and the switching circuit generate leakage current.
It achieves decoupling of peripherals and their surrounding circuits from the microcontroller unit, allowing peripherals to achieve low power consumption without sacrificing performance during operation. This optimizes the overall low-power design of embedded devices, enabling higher performance and lower power consumption.
Smart Images
Figure CN223770614U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of embedded low power consumption, and specifically relates to a low power switching circuit for embedded devices. Background Technology
[0002] like Figure 1 As shown, traditional embedded low-power circuit designs directly connect peripherals and their surrounding circuits to the main power supply and microcontroller unit. This places demands on engineers in selecting peripherals and designing the surrounding circuits when designing embedded low-power circuits. First, it is essential to evaluate whether the peripherals possess low-power characteristics. Second, to ensure that the peripherals approach their theoretical low-power levels in practical applications, a series of meticulous and time-consuming design tasks are required. However, there is often a trade-off between the low-power performance and functional performance of peripherals: enhanced functional performance often leads to increased overall power consumption, while pursuing lower power consumption may require compromises in functional performance. Therefore, this presents a significant challenge to the low-power design of embedded devices. Utility Model Content
[0003] To address the aforementioned issues, a low-power switching circuit for embedded devices is proposed, with the specific technical solution as follows:
[0004] A low-power switching circuit for an embedded device includes a main power supply, a power supply circuit, a microcontroller unit, a switching circuit, a control circuit, a peripheral interface, peripherals and their surrounding circuits;
[0005] The main power supply provides power to the microcontroller unit through the power supply circuit;
[0006] The main power supply also supplies power to the peripheral devices and their surrounding circuits through the power supply circuit and the switching circuit.
[0007] Furthermore, the microcontroller unit controls the switching circuit through the control circuit.
[0008] Furthermore, the main power supply can be any device or component capable of supplying power, whether it is DC or AC.
[0009] Furthermore, the microcontroller unit has various general-purpose user peripheral interfaces, including but not limited to general-purpose I / O (GPIO), direct memory access controller (DMA), analog-to-digital converter (ADC), digital-to-analog converter (DAC), comparator (COMP), operational amplifier (OPMAP), universal synchronous asynchronous transceiver (USART), serial peripheral interface (SPI), internal integrated circuit interface (I2C), and other commonly used user peripheral interfaces.
[0010] Furthermore, the control circuit can be a means for the microcontroller unit to interact with the switching circuit.
[0011] Furthermore, the switching circuit includes, but is not limited to, electronic switches, mechanical switches, and their peripheral circuits.
[0012] Furthermore, the peripheral device and its surrounding circuitry can be any external device that can be supported by the microcontroller unit and the surrounding circuitry that supports its normal operation.
[0013] Furthermore, the circuit has two modes: a low-power mode and a working mode.
[0014] In the low-power mode, when the embedded device enters low power mode, the microcontroller sends a sleep command to the switching circuit through the control circuit. After receiving the sleep command, the switching circuit cuts off the power supply to the corresponding peripheral device and its surrounding circuits, thereby stopping the peripheral device and its surrounding circuits from working.
[0015] When the embedded device enters the working mode, the microcontroller sends a work command to the switching circuit through the control circuit. After receiving the work command, the switching circuit restores the power supply to the corresponding peripheral device and its surrounding circuits, thereby enabling the peripheral device and its surrounding circuits to start working again.
[0016] The advantage of this invention lies in providing a low-power switching circuit for embedded devices. By introducing a switching circuit, the microcontroller unit (MCU) is decoupled from peripherals and their surrounding circuitry in the low-power design. When the embedded device needs to enter a low-power state, the MCU controls the switching circuit to completely power off the peripherals and their surrounding circuitry, preventing them from generating additional power. At this point, only the power consumption of the MCU and the leakage current of the switching circuit affect the low-power performance of the embedded device. This invention achieves complete decoupling of the power consumption calculations of peripherals and their surrounding circuitry from those of other parts of the embedded device in the low-power design. Peripherals can achieve low-power performance without sacrificing performance while the embedded device is operating, thus optimizing the overall low-power design of the embedded device. Compared with current traditional low-power designs, this application achieves higher performance and lower power consumption. Attached Figure Description
[0017] Figure 1 Traditional embedded low-power circuit design diagram;
[0018] Figure 2 A low-power switching circuit for embedded devices;
[0019] Figure 3Current direction in low-power mode of the circuit;
[0020] Figure 4 The direction of current in the circuit during operation. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0022] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0023] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0024] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0025] Example 1
[0026] like Figure 2 As shown, a low-power switching circuit for an embedded device includes a main power supply, a power supply circuit, a microcontroller unit, a switching circuit, a control circuit, a peripheral interface, peripherals and their surrounding circuits.
[0027] The main power supply provides power to the microcontroller unit through the power supply circuit;
[0028] The main power supply also supplies power to the peripheral devices and their surrounding circuits through the power supply circuit and the switching circuit.
[0029] The microcontroller unit controls the switching circuit through the control circuit.
[0030] The main power supply can be any device or component capable of supplying power, whether it is DC or AC.
[0031] The microcontroller unit has various general-purpose user peripheral interfaces, including but not limited to general-purpose I / O (GPIO), direct memory access controller (DMA), analog-to-digital converter (ADC), digital-to-analog converter (DAC), comparator (COMP), operational amplifier (OPMAP), universal synchronous asynchronous transceiver (USART), serial peripheral interface (SPI), internal integrated circuit interface (I2C), and other commonly used user peripheral interfaces.
[0032] The control circuit can be a means for the microcontroller unit to interact with the switching circuit.
[0033] The switching circuit includes, but is not limited to, electronic switches, mechanical switches, and their peripheral circuits.
[0034] The peripherals and their surrounding circuits can be any external device that can be supported by the microcontroller unit and the surrounding circuits that support its normal operation.
[0035] The circuit has two modes: a low-power mode and a working mode.
[0036] In the low-power mode, when the embedded device enters low power mode, the microcontroller sends a sleep command to the switching circuit through the control circuit. After receiving the sleep command, the switching circuit cuts off the power supply to the corresponding peripheral device and its surrounding circuits, thereby stopping the peripheral device and its surrounding circuits from working.
[0037] When the embedded device enters the working mode, the microcontroller sends a work command to the switching circuit through the control circuit. After receiving the work command, the switching circuit restores the power supply to the corresponding peripheral device and its surrounding circuits, thereby enabling the peripheral device and its surrounding circuits to start working again.
[0038] Example 2
[0039] like Figure 3 As shown, an embedded device low-power switching circuit, in the low-power mode (i.e., when the embedded device enters low-power mode), the total power supply forms a current closed loop through the power supply circuit and the microcontroller unit. The microcontroller unit controls the switching circuit to disconnect the power supply to the peripheral devices and their surrounding circuits, so that the peripheral devices and their surrounding circuits no longer generate additional power consumption. In the overall loop, only the power consumption of the microcontroller unit and the leakage current of the switching circuit affect the low-power performance of the embedded device.
[0040] like Figure 4As shown, an embedded device low-power switching circuit, when the embedded device enters the operating mode, the main power supply provides power to the microcontroller unit through the power supply circuit, forming a current loop. Simultaneously, the microcontroller unit sends a work command to the switching circuit through the control circuit, causing the peripheral devices and their surrounding circuits to restart operation. The main power supply then provides power to the peripheral devices and their surrounding circuits through the power supply circuit and the switching circuit, forming a second current loop.
[0041] Those skilled in the art will recognize that the units of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components of each example have been generally described in terms of function in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.
[0042] In the embodiments provided in this application, it should be understood that the division of units is only a logical functional division. In actual implementation, there may be other division methods, such as multiple units can be combined into one unit, one unit can be split into multiple units, or some features can be ignored.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. An embedded device low power switching circuit, comprising: The circuit includes a total power supply, a power supply circuit, a micro control unit, a switch circuit, a control circuit, peripherals and its peripheral circuit; The total power supply supplies power to the micro control unit through the power supply circuit; The total power supply also supplies power to the peripherals and its peripheral circuit through the power supply circuit and the switch circuit; The micro control unit controls the switch circuit through the control circuit.
2. The low power switching circuit for an embedded device of claim 1, wherein, The total power supply is selected from any device or component with power supply capability, either DC or AC.
3. The low power switching circuit for an embedded device of claim 1, wherein, The micro control unit has various general-purpose user peripheral interfaces, including but not limited to general-purpose I / O (GPIO), direct memory access controller (DMA), analog-to-digital converter (ADC), digital-to-analog converter (DAC), comparator (COMP), operational amplifier (OPMAP), universal synchronous / asynchronous receiver / transmitter (USART), serial peripheral interface (SPI), internal integrated circuit interface (I2C), and other commonly used user peripheral interfaces.
4. The low power switching circuit for an embedded device of claim 1, wherein, The control circuit is the means by which the micro control unit interacts with the switch circuit.
5. The low power switching circuit for an embedded device of claim 1, wherein, The switch circuit includes but is not limited to electronic switches, mechanical switches, and their peripheral circuits.
6. The low power switching circuit for an embedded device of claim 1, wherein, The peripherals and their peripheral circuit are any external device that can be supported by the micro control unit and the peripheral circuit that supports its normal operation.
7. The low power switching circuit for an embedded device of claim 1, wherein, The circuit has two modes, low power consumption mode and working mode; In the low power consumption mode, when the embedded device enters low power consumption, the micro control unit sends a sleep instruction to the switch circuit through the control circuit, and the switch circuit cuts off the power supply to the peripherals and their peripheral circuit after receiving the sleep instruction, so that the peripherals and their peripheral circuit stop working; In the working mode, when the embedded device enters the working mode, the micro control unit sends a work instruction to the switch circuit through the control circuit, and the switch circuit restores the power supply to the peripherals and their peripheral circuit after receiving the work instruction, so that the peripherals and their peripheral circuit start working again.