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Dc-dc converter and two-stage power converter comprising same

A technology of DC-DC and power converters, applied in the field of converters, to achieve the effect of simplifying the control method

Inactive Publication Date: 2019-05-21
ZISEN HOWER BOULEVARD HARRISBURG PENNSY LVANIA U
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention has been made to solve the above problems, and its object is to provide a buck-boost converter which can be realized at the critical point where the input voltage and the output voltage are the same without separate components or complicated control. Boost and Buck

Method used

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  • Dc-dc converter and two-stage power converter comprising same
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  • Dc-dc converter and two-stage power converter comprising same

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Embodiment Construction

[0044] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, so that those skilled in the art can easily implement them. However, the present invention is not limited to the embodiments described here, and it can be implemented in many different forms. In addition, in order to clearly explain the present invention, parts irrelevant to the description are omitted in the drawings, and similar components are given similar reference numerals throughout the specification.

[0045] The terms used in this specification will be briefly explained to specifically explain the present invention.

[0046] The terminology used in the present invention is based on the consideration of the function of the terminology in the present invention, and the general terminology that is currently widely used is selected as much as possible. But these terms can be different according to the intentions or precedents of those skilled in the field, and t...

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Abstract

The present invention relates to a DC-DC converter and a two-stage power converter comprising the same, and comprises a plurality of active switches, wherein a part of the plurality of active switchesis capable of operating at a variable duty ratio (D) and the rest of the active switches can operate at a fixed duty ratio, an input / output voltage conversion ratio of the DC-DC converter can be determined on the basis of the variable duty ratio (D), and an output of the DC-DC converter is controlled by adjusting the variable duty ratio (D).

Description

Technical field [0001] The present invention relates to a DC-DC converter and a two-stage power converter including it. More specifically, it relates to a converter that can step down and step up, and when it is connected to a bus When a bus converter is combined to form a two-stage power converter, the number of switches can be reduced by sharing the switches. Background technique [0002] Among the non-isolated DC-DC converters, the widely used converters include Buck Converter, Boost Converter, and Buck-Boost Converter. [0003] The buck converter is a step-down converter, which can only be used when the output voltage is lower than the input voltage, and the boost converter is a step-up converter, which can only Use under the condition that the output voltage is higher than the input voltage. [0004] A buck converter or a boost converter requires a wide input voltage range and a wide output voltage range. Therefore, when the output voltage is larger or smaller than the input v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158
CPCH02M3/158H02M3/1582H02M3/3374H02M1/007H02M1/0095H01F38/14
Inventor 洪成洙郑光淳秋在镐
Owner ZISEN HOWER BOULEVARD HARRISBURG PENNSY LVANIA U