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Low-power-consumption power management circuit for MCU chip and MCU chip

A power management, low-power technology, applied in data processing power supply, electrical digital data processing, digital data processing components and other directions, can solve problems such as poor low-power power management solutions, and optimize power consumption distribution , reduce power consumption, solve the effect of poor effect

Pending Publication Date: 2022-04-26
上海列拓科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of this application is to provide a low power consumption power management circuit and MCU chip for MCU chips, so as to solve the problem of poor effect of low power consumption power management solutions

Method used

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  • Low-power-consumption power management circuit for MCU chip and MCU chip

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0025] It should be noted that the terms "first" and "second" in the specification and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific order or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for ...

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Abstract

The invention discloses a low-power-consumption power management circuit for an MCU chip and the MCU chip. The circuit comprises a power supply switching module used for receiving a control signal output by a power supply detection module, and the control signal is used for indicating the power supply switching module to switch a main power supply between a preset main power supply Vdd or a preset battery auxiliary power supply Vbat; the Vdd power supply detection module is used for detecting whether the main power supply exists or not and whether the power supply is stable or not, and outputting the control signal to the power supply switching module to switch the main power supply and the auxiliary power supply; the LDO combined circuit module at least comprises a low-power-consumption LDO circuit and a normal LDO circuit, the low-power-consumption LDO circuit is used for supplying voltage to a corresponding backup domain low-voltage device, and the normal LDO circuit is used for supplying voltage to a corresponding digital domain. The technical problem that a low-power-consumption power management scheme is poor in effect is solved.

Description

technical field [0001] The present application relates to the field of microcontrollers, and in particular, relates to a low-power consumption power management circuit for an MCU chip and an MCU chip. Background technique [0002] At present, MCU chips are used everywhere in applications such as Internet of Things, intelligent transportation, smart cities, and smart homes, and reducing energy consumption is also the primary concern at present. [0003] In related technologies, the low power consumption power management solution in the MCU chip system can make full use of external power to improve the power supply selection of the MCU chip and improve the power supply efficiency of the chip, so that the chip can work normally and efficiently in different power supply application scenarios. However, the low power consumption power management scheme cannot guarantee the validity of data in the internal memory of the chip after power failure, and there is no efficient power mana...

Claims

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Application Information

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IPC IPC(8): G06F1/3234G06F1/3203G06F1/26
CPCG06F1/3203G06F1/266G06F1/3243
Inventor 马杰尹奇国高攀易志中任丽华王金博
Owner 上海列拓科技有限公司
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