Power supply switching selection circuit and power supply

A technology for selecting circuits and power switching, applied in circuit devices, emergency power arrangements, electrical components, etc., can solve problems such as power damage, system interference, power voltage signal instability, etc., and achieve the effect of enhancing stability

Active Publication Date: 2021-03-19
北京紫光青藤微系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the power switching process, the following problems may occur. For example, the power supply voltage signal is unstable and produces non-ideal signals of overshoot or undershoot, causing interference to the system; damage to the power supply

Method used

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  • Power supply switching selection circuit and power supply
  • Power supply switching selection circuit and power supply
  • Power supply switching selection circuit and power supply

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0028] The power switching selection circuit and the power supply of the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0029] figure 1 is a structural diagram of a power switching selection circuit according to an embodiment of the present invention.

[0030] In an embodiment of the present invention, the power source includes a first power source and a second power source.

[0031] Such as figure 1 As shown, the power switching selection circuit of the embodiment of...

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PUM

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Abstract

The invention discloses a power supply switching selection circuit and a power supply. The power supply switching selection circuit comprises a first control module, the input end of the first controlmodule being used for receiving a power supply selection signal, and the power supply selection signal being used for representing selection of a first power supply or a second power supply; a firstdiode; a first switching circuit; a starting circuit, the first end of the starting circuit being connected with the second power supply, and the second end being connected with the first power supply; a second switching circuit, the first end of the second switching circuit being connected with the first power supply, the second end being connected with the third output end of the first control module, the third end of the second switching circuit being connected with the second power supply, and the fourth end being connected with the third end of the starting circuit; at least one second control module; at least one third switching circuit; at least one fourth switching circuit; and a power output end, connected with the fourth end of the first switching circuit and the fourth end of the second switching circuit and used for outputting power supply voltage. The power supply switching selection circuit can protect the whole circuit and enhance the stability of the system.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a power switching selection circuit and a power supply. Background technique [0002] The combination of two power supplies has the advantages of improving system efficiency, saving energy, and maintaining load stability. However, during the power switching process, the following problems may occur. For example, the power supply voltage signal is unstable and produces non-ideal signals of overshoot or undershoot, causing interference to the system; damage to the power supply. [0003] Therefore, it is very necessary to insert a power switching selection circuit between the two power supplies to prevent these problems, so as to protect the entire circuit and maintain system stability. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the above-mentioned technologies at least to a certain extent. [0005] For this re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/04
CPCH02J9/04
Inventor 黄金煌
Owner 北京紫光青藤微系统有限公司
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