DC power supply power-on protection circuit, method for driving load circuit, and electronic equipment
A DC power supply and protection circuit technology, applied to electronic switches, electrical components, output power conversion devices, etc., can solve problems such as impact, poor contact between plugs and sockets, and metal oxidation
Active Publication Date: 2021-04-16
BOE TECH GRP CO LTD
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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.
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[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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The present invention discloses a DC power supply power-on protection circuit, a method for driving a load circuit, and a display device. The power-on protection circuit of the DC power supply comprises: a DC power socket, a switch control module and a switch module; Delayed conduction of the switching element; when the DC power socket is disconnected from the DC power supply, the energy storage element is discharged; the switching element is in the cut-off state during the delay period after the DC power socket is connected to the DC power supply; the switch module is used according to the control terminal The voltage controls whether the switch element is turned on or off; when the switch element is turned on, it provides the electric energy of the DC power supply to the load circuit, and when the switch element is turned off, it does not provide the electric energy of the DC power supply to the load circuit. This paper can suppress the generation of arc at the moment of DC power supply and protect the load circuit.
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...
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IPC IPC(8): H02M1/34H03K17/284
CPCH02M1/34H03K17/284
Inventor 刘建福
Owner BOE TECH GRP CO LTD