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Power-on protection circuit of DC power supply, method for driving load circuit, and electronic equipment

A DC power supply and protection circuit technology, applied in electronic switches, electrical components, output power conversion devices, etc., can solve problems such as poor contact between plugs and sockets, metal oxidation, and affecting product reliability

Active Publication Date: 2020-07-07
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the arc is generated, it will impact the subsequent circuit chip and other devices. In addition, the long-term arc will cause the metal oxidation of the contact part between the plug and the socket, resulting in poor contact between the plug and the socket, which greatly affects the reliability of the product.

Method used

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  • Power-on protection circuit of DC power supply, method for driving load circuit, and electronic equipment
  • Power-on protection circuit of DC power supply, method for driving load circuit, and electronic equipment
  • Power-on protection circuit of DC power supply, method for driving load circuit, and electronic equipment

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Embodiment Construction

[0021] The application describes a number of embodiments, but the description is illustrative rather than restrictive, and it will be obvious to those of ordinary skill in the art that within the scope of the embodiments described in the application, There are many more embodiments and implementations. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Except where expressly limited, any feature or element of any embodiment may be used in combination with, or substituted for, any other feature or element of any other embodiment.

[0022] This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of this application can also be combined with any conventional features or elements to form unique inventive solutions as defined by the clai...

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PUM

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Abstract

The invention discloses a power-on protection circuit of a DC power supply, a method for driving a load circuit and a display device. The power-on protection circuit comprises a DC power supply socket, a switch control module and a switch module. The switch control module is used for charging the energy storage element when the DC power supply socket is connected with a DC power supply, so the output voltage of the output end of the switch control module can delay the conduction of the switch element; when the DC power supply socket cuts off the DC power supply, the energy storage element is discharged; the switching element is in a cut-off state in a delay period after the DC power supply socket is connected with the DC power supply; the switch module is used for controlling the switch-onor switch-off of the switch element according to the voltage of the control end; when the switching element is turned on, electric energy of the DC power supply is provided for the load circuit; whenthe switching element is turned off, electric energy of the DC power supply is not provided for the load circuit. Generation of electric arcs at the moment of DC power supply electrification can be restrained, and a load circuit is protected.

Description

technical field [0001] This article relates to the technical field of DC power supply, and specifically relates to a DC power supply power-on protection circuit, a method for driving a load circuit, and electronic equipment. Background technique [0002] Electronic equipment powered by DC is prone to arcing at the power interface when it is directly powered on. The moment the plug is inserted into the socket so that the plug comes into contact with the socket, an arc (spark) is generated. [0003] When the arc is generated, it will impact the subsequent circuit chips and other devices. In addition, the long-term arc will cause the metal oxidation of the contact part between the plug and the socket, resulting in poor contact between the plug and the socket, which greatly affects the reliability of the product. Contents of the invention [0004] The application provides a DC power supply power-on protection circuit, a method for driving a load circuit and electronic equipme...

Claims

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Application Information

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IPC IPC(8): H02M1/34H03K17/284
CPCH02M1/34H03K17/284
Inventor 刘建福
Owner BOE TECH GRP CO LTD