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Dual-power-supply automatic switching circuit

An automatic switching, dual power supply technology, applied in circuit devices, emergency power supply arrangements, electrical components, etc., can solve the problems of large assembly layout area and high power consumption, and achieve small layout area, strong process portability, and ultra-low power consumption. The effect of power consumption

Pending Publication Date: 2022-04-05
浙江芯劢微电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a dual-power automatic switching circuit with ultra-low power consumption and small layout area for the problem of large layout area and high power consumption of the traditional dual power supply circuit assembly.

Method used

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Embodiment Construction

[0059] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0060] The present application provides a dual power supply automatic switching circuit.

[0061] Such as figure 1 As shown, in an embodiment of the present application, the dual power supply automatic switching circuit includes a first power supply 100, a first inverter circuit 200, a second inverter circuit 300, a second power supply 400, a levelshift circuit 500, The power tube circuit 600 and the output terminal 700.

[0062] The first inverter circuit 200 is electrically connected to the first power source 100 . The second inverter circuit 300 is connected to the f...

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Abstract

The invention relates to a dual-power-supply automatic switching circuit, which is constructed by using a small number of logic gate devices, can realize automatic switching between a first power supply and a second power supply, not only realizes ultra-low power consumption, but also can realize reverse charging prevention and electric leakage prevention functions, and adopts the logic gate devices, so that the dual-power-supply automatic switching circuit is very convenient to use. And the process portability is high, and the layout area is very small.

Description

technical field [0001] The present application relates to the technical field of power supply circuits, in particular to a dual power supply automatic switching circuit. Background technique [0002] When the main and auxiliary dual power supplies supply power to the circuit system, it is usually necessary to make a choice between the main power supply and the backup power supply to supply power to the system. In the traditional dual power supply circuit, the chip is generally set up, and the code is written and burned into the chip, so that the chip can actively control the switching between the main and secondary power supplies. [0003] However, if a power supply is insufficient, such as a power failure, and the power supply is not switched to another power supply in time, the entire circuit system will be powered down, resulting in abnormal operation of the entire circuit system. Therefore, in order to overcome this problem, the traditional dual power supply circuit gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
Inventor 张智印谢冉任梓豪
Owner 浙江芯劢微电子股份有限公司
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