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Power-down protection circuit and integrated chip

A power-down protection and power supply control circuit technology, which is applied in the direction of emergency protection circuit devices, circuit devices, and protection against undervoltage or no voltage, can solve the problem of large volume, high cost, unfavorable low cost and small electronic products. Volume and other issues, to achieve the effect of power-down protection, low cost, small size

Pending Publication Date: 2021-01-26
SHENZHEN POWEROAK NEWENER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although the design of the dual power supply circuit is feasible, both the hardware circuit design and the software control strategy are relatively complicated, and the cost is high and the volume is large, which is not conducive to the development of low-cost and small-sized electronic products.

Method used

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  • Power-down protection circuit and integrated chip
  • Power-down protection circuit and integrated chip
  • Power-down protection circuit and integrated chip

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Embodiment Construction

[0039] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] Please refer to figure 1 , figure 1 A structural schematic diagram of an integrated chip and a voltage source provided for an embodiment of the present invention, such as figure 1 As shown, the integrated chip 100 includes a power-down protection circuit 10 and a control unit 20 , wherein the input terminal of the power-down protec...

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Abstract

The embodiment of the invention discloses a power-down protection circuit and an integrated chip, the power-down protection circuit is used for being connected with a reset signal input end and a power supply end of a control unit, and the power-down protection circuit comprises a first voltage regulating circuit, a power supply control circuit, a second voltage regulating circuit and a reset control circuit, the first voltage regulating circuit is used for converting input voltage of a voltage source to enable the output end of the first voltage regulating circuit to output first voltage, thepower supply control circuit is used for controlling the control unit to be powered on or powered off according to the first voltage, and the second voltage regulating circuit is used for convertingthe first voltage to enable the output end of the second voltage regulating circuit to output second voltage. The second voltage is used as power supply voltage for the control unit. The reset controlcircuit is used for outputting a reset control signal to the control unit according to the second voltage. By means of the mode, power-down protection of the electronic product can be achieved through a simple pure hardware circuit, the cost is low, and the size is small.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a power-down protection circuit and an integrated chip. Background technique [0002] During the use of electronic products, users have higher and higher requirements for the stability and safety of electronic product performance. During use, when abnormal operation or abnormal power failure occurs, electronic products are usually required to realize intelligent protection. For this reason, some engineers adopt a dual power supply circuit power supply scheme in the design of the MCU power supply circuit, that is, a power supply circuit design in which the main power supply and the backup power supply are compatible with each other, and the software control strategy performs real-time detection on the two power supply circuits. Ensure the stable and safe operation of electronic products. [0003] However, although the design of the dual power supply circuit is feasible...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/20H02H3/24H02H3/06H02M3/00
CPCH02H7/20H02H3/243H02H3/06H02M3/00
Inventor 秦赓唐朝垠雷健华尹相柱
Owner SHENZHEN POWEROAK NEWENER
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