Switch control circuit, chip, adaptor and switch control method

A switching control circuit, switching circuit technology, applied in control/regulation systems, instruments, electrical components, etc., can solve the problems of high standby power consumption of chips and low voltage resistance of switching transistors

Active Publication Date: 2018-10-26
SHENZHEN CHIP HOPE MICRO ELECTRONICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of this application is to provide a switch control circuit, chip, adapter and switch control method, which are used to solve the problem of large standby power consumption of the chip during the light load of the adapter in the prior art, and the adapter Problems such as low pressure resistance of the switching transistor

Method used

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  • Switch control circuit, chip, adaptor and switch control method
  • Switch control circuit, chip, adaptor and switch control method
  • Switch control circuit, chip, adaptor and switch control method

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Embodiment Construction

[0062] The implementation of the present application will be described by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification.

[0063] Although in some instances the terms first, second, etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first preset threshold could be termed a second preset threshold, and, similarly, a second preset threshold could be termed a first preset threshold, without departing from the scope of the various described embodiments. Both the first preset threshold and the preset threshold describe a threshold, but unless the context clearly indicates otherwise, they are not the same preset threshold. Similar cases also include the first volume and the second volume.

[0064] Furthermo...

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Abstract

The invention provides a switch control circuit, a chip, an adaptor and a switch control method. The switch control circuit is used for generating a power supply control signal and controlling a switch circuit to be connected in a delay way by detecting a first electrical signal reflecting power supply of a load and controlling the control switch circuit to be disconnected by detecting a second electrical signal reflecting an electrical signal in a power conversion circuit, and a part of electrical devices in the switch control circuit are maintained working according to the power supply control signal. By controlling the switch circuit to be connected in the delay way and starting power supply of a part of electrical devices in the switch control circuit within a delay period, light-loadpower supply can be timely and reliably achieved by employing a low-power consumption mode during a light-load period of the adaptor.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201810443619.8 and the title of the invention "Switch control circuit, chip, adapter and switch control method" submitted to the China Patent Office on May 10, 2018, the entire contents of which are hereby incorporated by reference In this application. technical field [0002] The present application relates to the technical field of drive circuits, in particular to a switch control circuit, a chip, an adapter and a switch control method. Background technique [0003] Currently, adapters driven by bipolar junction transistors (BJT) on the market need auxiliary windings to provide power for the chip. The typical structure is the attached figure 1 As shown in the figure, in the application of low power less than 15W, the three windings of the transformer are generally composed of the primary winding 103 , the secondary winding 104 and the auxiliary winding 105 . 101 is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08H02M3/335H02M7/217H02M3/156
CPCH02M1/08H02M3/156H02M3/33523H02M7/217
Inventor 赵鑫宗强龙波管磊
Owner SHENZHEN CHIP HOPE MICRO ELECTRONICS LTD
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