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Switching power supply capable of reducing standby power consumption

A switching power supply and switching device technology, applied in the direction of output power conversion devices, electrical components, high-efficiency power electronic conversion, etc., can solve the problems of low efficiency, low conversion efficiency of switching power supply, difficulty in meeting standby power consumption, etc., and achieve reliable High performance, easy implementation, and low power consumption

Inactive Publication Date: 2021-05-28
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the switching power supply has the disadvantage of low efficiency at light load, which makes many home appliances unable to meet the relevant needs
[0003] Taking the flyback switching power supply as an example, it has been widely used in the field of home appliances due to its advantages of high efficiency and high power density. In the light load state, the conversion efficiency of the switching power supply is low at this time, and it is difficult to meet the index of standby power consumption

Method used

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  • Switching power supply capable of reducing standby power consumption
  • Switching power supply capable of reducing standby power consumption
  • Switching power supply capable of reducing standby power consumption

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Embodiment Construction

[0035] Each embodiment in this specification is described in a progressive manner, and the emphasis is on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

[0036] In one embodiment, the present invention discloses a switching power supply for reducing standby power consumption, comprising:

[0037] A voltage-dividing resistor branch formed by connecting multiple resistors, at least one resistor in the branch can be controlled to be connected to or not connected to the voltage-dividing resistor branch;

[0038] The control terminal, which can be high level or low level, wherein: when the electrical appliance is working normally, the control terminal is at the first level; when the electrical appliance is in the standby state, the control terminal is: with the first level the opposite second level;

[0039] A switch device connected to and controlled by the control terminal, wherein:

[0040]...

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Abstract

The invention provides a scheme for meeting the requirement of standby power consumption when a switching power supply capable of reducing standby power consumption is used for household appliances. The switching power supply controllable feedback solution has the advantages of being simple in implementation mode, easy to implement, high in reliability and the like, power consumption of the switching power supply can be reduced in the standby state of household appliances, and the switching power supply can be widely applied to other electric appliances.

Description

technical field [0001] The invention relates to the field of switching power supplies, in particular to a switching power supply for reducing standby power consumption. Background technique [0002] With the development of society, human beings use more and more energy, and the need for energy-saving technology is becoming more and more urgent. The country has also issued a series of energy standards. Switching power supply is widely used in the field of household appliances due to its advantages of high efficiency and low power consumption. However, household appliances have a need for standby. The latest standards issued by the state require that the power consumption of household appliances be less than 0.5W during standby. However, the switching power supply has the disadvantage of low efficiency at light load, which makes many home appliances unable to meet the relevant needs. [0003] Taking the flyback switching power supply as an example, it has been widely used in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00
CPCH02M1/00Y02B70/10
Inventor 衡军军吴新华赵禹
Owner GREE ELECTRIC APPLIANCES INC