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Power switching control circuit and control method

A power switching and control circuit technology, which is applied in electrical digital data processing, generation of response errors, instruments, etc., and can solve problems such as poor reliability of single power supply

Active Publication Date: 2019-07-12
SHENZHEN NEW GREENNET TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to propose a power switching control circuit and control method for the problem of poor reliability of single power supply

Method used

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  • Power switching control circuit and control method
  • Power switching control circuit and control method
  • Power switching control circuit and control method

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Embodiment Construction

[0034] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the related drawings. Preferred embodiments of the present application are shown in the accompanying drawings. However, the application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are for the purpose of describing specific embodiments only, and are not intended to limit the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] like ...

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Abstract

The invention relates to a power switching control circuit and a control method. The switching control circuit comprises: a first switch module for controlling access of a first power supply; a secondswitch module for controlling access of a second power supply. The control method comprises: taking power from a first power supply or a second power supply through the first switch module and the second switch module; detecting whether the first power supply and the second power supply are on-line; when the first power source and the second power source are both on-line, controlling the two power sources to be switched in turn, the switching time interval being smaller than the signal delay of obtaining signals from the first power source and the second power source, when only the first power source is on-line, only controlling the first switch module to be conducted, and when only the second power source is on-line, only controlling the second switch module to be conducted. According tothe control circuit and method, the power supplies can be switched according to the states of the two power supplies, and the stability and reliability of the power supply system are ensured.

Description

technical field [0001] The present application relates to the field of power supply, and in particular, to a power switching control circuit and a control method. Background technique [0002] Electronic equipment usually needs an external power supply to power it to work normally. When using a single power supply, once the external power supply is abnormally powered down, the electronic equipment may not work. For some important circuits such as monitoring circuits, alarm circuits, etc. Try to avoid stopping work due to abnormal power supply, and for some important components in electronic equipment, such as memory, important data will be lost due to power failure, resulting in greater losses. [0003] Therefore, the dual power supply design of the equipment should be considered in the product design. When one power supply fails, the other power supply can be automatically switched immediately, thereby improving the reliability and stability of the power supply. SUMMARY O...

Claims

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Application Information

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IPC IPC(8): G06F11/20
CPCG06F11/2015G06F11/2033Y04S20/20Y02B70/30
Inventor 谢华超
Owner SHENZHEN NEW GREENNET TECH
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