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Control Circuit Module of Power Factor Correction Converter

A power factor correction and control circuit technology, applied in output power conversion devices, high-efficiency power electronic conversion, electrical components, etc., can solve the problems of conduction loss, high stress of related components, etc.

Active Publication Date: 2019-02-26
亚瑞源科技(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the inductor current is at the peak value, the boundary conduction mode is used, mainly because the peak current is relatively large, which is likely to cause conduction loss and related components need to withstand high stress.

Method used

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  • Control Circuit Module of Power Factor Correction Converter
  • Control Circuit Module of Power Factor Correction Converter

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Embodiment Construction

[0011] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

[0012] see figure 1 and figure 2 As shown, it is a schematic diagram of a circuit and a schematic diagram of an inductor current in a preferred embodiment of the present invention. The present invention provides a control circuit module (1) of a power factor correction converter, the control circuit module (1) is coupled to an inductance component (2), and the inductance component (2) is connected to an input voltage terminal (3) It is coupled with an output voltage terminal (4), and the control circuit module (1) includes a switch unit (11), a judgment unit (12), a comparison unit (13) and a processing unit (14).

[0013] The switch unit (11) can be coupled with the inductance component (2), and the switch unit (11) can be a transistor component or other ...

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PUM

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Abstract

The present invention provides a control circuit module of a power factor correction converter, which is mainly in a hybrid structure of a BCM and a CCM. When the control circuit module is in full load, a PFC inductor current can be operated in the CCM so as to avoid over-great peak current and retain the advantage of low harmonic distortion. When the control circuit module is in light load, the PFC inductor current is operated in the BCM at positions of wave troughs on two sides, so as to lower switching loss and improve overall efficiency; and when the PFC inductor current approaches to the wave peak, the PFC inductor current is operated in the CCM, thereby reducing conduction loss and improving component stress-resistance.

Description

technical field [0001] The present invention relates to a power factor corrector, and in particular to a power factor corrector with a mixed structure of boundary conduction mode and continuous conduction mode. Background technique [0002] With the progress of science and technology and the development of economy, the human demand for switching converters is increasing day by day. In recent years, due to the great progress of power electronics technology, most of the electronic devices are also developing in the direction of thinner, thinner and smaller. The internal power converters also need to be designed in a thinner and shorter trend. Therefore, it has the advantages of small size and light weight. Switching power converters with advantages such as high efficiency and high efficiency have gradually replaced traditional linear converters and become the mainstream of power converters. In addition to the advantages of being small and light, the switching converter furthe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/42
CPCY02B70/10Y02P80/10
Inventor 洪宗良杨志隆邱绍贤
Owner 亚瑞源科技(深圳)有限公司