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Buck-boost Cuk double-resonance switched capacitor converter

A switched capacitor and dual resonance technology, applied in the field of buck-boost Cuk dual-resonance switched capacitor converters, can solve the problems of circuit miniaturization and integration, narrow output voltage adjustment range, etc., which are unfavorable to RSCC, and achieve excellent voltage gain adjustment performance. , low cost, the effect of reducing switching loss

Active Publication Date: 2021-02-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the RSCC topology, the output voltage adjustment range is often relatively narrow, and the expansion of the output voltage adjustment range is often achieved by building a multi-stage circuit.
The problem with multi-level circuits is that more inductors, capacitors and switches are introduced, which will undoubtedly increase the complexity of circuit topology and control, and is also not conducive to the miniaturization and integration of RSCC circuits.

Method used

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  • Buck-boost Cuk double-resonance switched capacitor converter
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  • Buck-boost Cuk double-resonance switched capacitor converter

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Embodiment Construction

[0030] Hereinafter, the terms "comprising" or "may include" that may be used in various embodiments of the present invention indicate the existence of invented functions, operations or elements, and do not limit the existence of one or more functions, operations or elements. Increase. In addition, as used in various embodiments of the present invention, the terms "comprising", "having" and their cognates are only intended to represent specific features, numbers, steps, operations, elements, components or combinations of the foregoing, And it should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing or adding one or more features, numbers, steps, operations, elements, components or a combination of the foregoing possibilities.

[0031] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any or all combination...

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Abstract

The invention discloses a buck-boost Cuk double-resonance switched capacitor converter, and the converter is improved on the basis of a conventional reverse voltage mode SCC, two small inductors are introduced to form a double-resonance loop, soft switching is achieved, switching loss of the converter is reduced, and reliability of the converter is improved; meanwhile, the excellent voltage gain adjustment performance of the converter is realized by adjusting the resonance charging and discharging time. Compared with other RSCC topologies, the RSCC topology has the advantages that the complexity of a circuit structure is not increased, and a high-performance and low-cost solution is provided for an application occasion needing high power density and an ultra-wide voltage gain adjustment range.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a buck-boost Cuk double-resonance switched capacitor converter. Background technique [0002] With the development of modern science and technology, there are more demands for the miniaturization and integration of the power supply, that is, the improvement of the power density of the power supply in the actual product design. [0003] Widely used PWM converters such as Buck, Boost, etc., have large inductance in their circuits, which greatly limits the improvement of power density. Switched Capacitor Converter, SCC has the advantages of ultra-high power density and easy integration because there is no additional inductance in the circuit structure. Since it was proposed in the 1980s, it has been used in chip power supply, level conversion, etc. It is widely used in micro power occasions. However, the traditional switched capacitor converter has defects such as being unsuitable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/00H02M3/04H02M3/07
CPCH02M3/005H02M3/04H02M3/07H02M1/0058Y02B70/10
Inventor 陈章勇韩雨伯刘翔宇吴云峰冯晨晨
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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