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Novel power switch circuit

A technology of power switch and switching power supply circuit, which is applied in the field of communication to achieve flexible control, reduce current requirements, and solve design problems

Inactive Publication Date: 2018-02-09
SHANGHAI GONGJIN COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has caused the design bottleneck of this type of product. How to make the power switch meet the design requirements without changing the power switch requires us to meet the requirements of the power switch by changing the corresponding design circuit.

Method used

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  • Novel power switch circuit
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Embodiment Construction

[0019] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0020] The main feature of the new power switch circuit is that it includes a power terminal, a switching power supply circuit and a filter circuit, the three are connected in parallel between the input voltage and ground, and the power supply terminal is connected to an external power supply, and the switching power supply The circuit is used to connect the load, the filter circuit is used for filtering, and the switching power supply circuit includes a MOS tube circuit and a power switch circuit, through the conduction and cut-off of the MOS tube in the MOS tube circuit, the power switch part current is controlled.

[0021] In a preferred embodiment, the connecting terminal of the power supply connecting terminal is connected to the anode of a Zener diode, and the two form a series branch, which is connec...

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Abstract

The invention relates to a novel power switch circuit. The novel power switch circuit comprises a power supply terminal, a switch power circuit and a filtering circuit which are connected between theinput voltage and the ground in parallel; and the power supply terminal is externally connected with a power supply; the switch power circuit is used for connecting the load; the filtering circuit isused for filtering, and the switch power circuit comprises a MOS tube circuit and a power switch circuit, the current passing through the power switch part is controlled through the breakover and cut-off of the MOS tube, the flexible control on the power switch is realized by arranging the MOS tube and controlling the breakover and cut-off of the MOS tube, the power main path does not pass througha switch key, the power switch only has the functions of turning on and off, the current requirement on the power switch is greatly reduced, and the cost is saved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to the field of power switches of communication equipment such as wireless gateways, and specifically refers to a novel power switch circuit. Background technique [0002] Terminal communication equipment often includes multiple functions. For example, a PON network communication product often includes not only PON, but also wifi, voice and other functions. As the power of wireless 2.4G and 5G becomes higher and higher, the power of the device as a whole will also increase. The current consumer electronics market has higher and higher requirements for cost, and the requirements for switching devices of the equipment must also be increased accordingly. [0003] see figure 1 , the traditional switching circuit has very high requirements on the overload current of the switching device P1SW1 in the figure, while the overload current of the corresponding switching products on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/32
Inventor 卜京徽
Owner SHANGHAI GONGJIN COMM TECH
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