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Power supply quick wake-up circuit and method

A wake-up circuit and power supply technology, applied in program control, instrument, computer control, etc., can solve the problems of slow system establishment and long circuit startup time, and achieve the effect of solving slow wake-up and simple circuit structure

Pending Publication Date: 2022-07-29
钜泉微电子(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a power supply fast wake-up circuit and method for solving the problem of long circuit startup time and system failure when switching from low power consumption mode to high performance mode in the prior art. slow build problem

Method used

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  • Power supply quick wake-up circuit and method

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Effect test

Embodiment 1

[0028] like figure 1 As shown, this embodiment provides a power fast wake-up circuit including: a first voltage stabilization module 12, a second voltage stabilization module 14, a first switch S1, a second switch S2, a third switch S3, a first capacitor C1, a first A system 13 and a second system 15 .

[0029] Specifically, the power fast wake-up circuit further includes a control module 11, the control module 11 generates the first control signal and the second control signal based on a clock signal and a working mode switching signal, the first switch S1 and The state of the second switch S2 is opposite.

[0030] It should be noted that the control module 11 is a switching circuit that controls the states of the first switch S1 and the second switch S2. The switching circuit can switch between the power-on mode or the working mode according to different application requirements. Among them, the first switch S1 and the second switch S2 and the first voltage regulator modul...

Embodiment 2

[0041] This embodiment provides a method for fast wake-up of power supply, which is implemented based on the fast wake-up circuit of power supply in the first embodiment. When switching from low-power mode to high-performance mode, the following steps are involved:

[0042] S1: Receive the low power consumption to high performance mode switching signal, turn on the third switch S3, turn on the first reference voltage and the working state of the first voltage regulator module 12, and the first voltage regulator module 12 outputs a third voltage based on the second reference voltage , the second voltage regulator module 14 outputs a second voltage based on the second reference voltage, and charges the first capacitor C1 with the second voltage and the third voltage;

[0043] S2: After the first capacitor C1 is fully charged, the first system 13 starts to start, the second switch S2 is turned off, the first switch S1 is turned on, and the input of the first voltage regulator mod...

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Abstract

The invention provides a power supply rapid wake-up circuit and method. The power supply rapid wake-up circuit comprises a first voltage stabilization module, a second voltage stabilization module, a first switch, a second switch, a third switch, a first capacitor, a first system and a second system. When the low-power-consumption mode is switched to the high-performance mode, the establishment of the first reference voltage and the establishment of the input voltage of the first voltage stabilizing module are carried out at the same time, and the establishment of the first reference voltage with higher precision does not need to be waited, so that the switching time of the whole system from the low-power-consumption mode to the high-performance mode is shortened; according to the invention, the change-over switch is controlled by adopting the simple switching circuit, the circuit structure is simple, and the original circuit structure does not need to be greatly modified.

Description

technical field [0001] The present invention relates to the field of circuit design, in particular to a circuit and method for rapidly waking up a power supply. Background technique [0002] In recent years, with the rise of smart life, the functional requirements of consumer electronic products have become higher and higher, the design has become more and more complex, and the power consumption has also increased. Therefore, the ability to control the power consumption of electronic products has become higher and higher. In order to minimize the power consumption of the controller, it is mainly achieved in the following three ways: reducing the power consumption in high-performance mode, reducing the power consumption in low-power mode, and shortening the wake-up from low-power to high-performance mode time. [0003] For the scheme of shortening the wake-up time from low power consumption to high performance mode, when the MCU is in the low power consumption mode, most of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 宋宇马侠代建宾
Owner 钜泉微电子(上海)有限公司
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