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Hybrid power converter and control method thereof

A technology of power converter and hybrid power, which is applied in the direction of conversion equipment without intermediate conversion to AC, which can solve the problem of capacitance size circuit conversion efficiency and power density, low voltage stress of switching elements, difficulty in flexibly adjusting output voltage, and difficulty in control circuit design and other issues to achieve the effect of miniaturization, low switching loss, and low conduction loss

Active Publication Date: 2020-09-18
杭州艾诺半导体有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with power converters using inductors, power converters using switched capacitor topology have the advantages of small capacitor size, high circuit conversion efficiency and power density, and low voltage stress on switching elements, but there are difficulties in flexibly adjusting the output voltage and switching elements. Disadvantages of large quantity and difficult control circuit design

Method used

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  • Hybrid power converter and control method thereof
  • Hybrid power converter and control method thereof
  • Hybrid power converter and control method thereof

Examples

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Embodiment Construction

[0064] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0065] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale. Meanwhile, it should be understood that in the following description, "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical connection or electromagnetic connection. When an element or circuit is said to be "connected to" another element or an ...

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Abstract

The invention discloses a hybrid power converter and a control method thereof. The hybrid power converter comprises a first group of switching elements, an inductor and a switched capacitor network which are sequentially connected between a first end and a second end of the hybrid power converter. The first group of switching elements are controlled to be switched on and switched off according toa first group of control signals, so that the connection state of the first end of the hybrid power converter is periodically changed; the switched capacitor network comprises a second group of switching elements and a plurality of capacitors; on and off of the second group of switching elements are controlled according to the second group of control signals so as to periodically change charging and discharging states of the inductor and the plurality of capacitors. The hybrid power converter adjusts duty cycles of the first group of control signals and the second group of control signals, respectively, to convert the input voltage to a desired output voltage. The hybrid power converter can improve the output voltage regulation capability of the circuit, realize circuit miniaturization andimprove the conversion efficiency of the circuit.

Description

technical field [0001] The present invention relates to a power converter, more particularly, to a hybrid power converter in which both an inductor and a capacitor are used as energy storage elements and a control method thereof. Background technique [0002] A power converter is a power module that converts an input voltage waveform into a desired output voltage or output current. The power converter includes a switching element and an energy storage element. The switching element is turned on and off periodically according to a control signal, and the energy storage element stores and releases electric energy accordingly, thereby providing an output voltage signal at the output terminal of the power converter. [0003] In a power converter that uses an inductor as an energy storage element, a roughly constant output voltage or output current can be obtained by using a feedback loop to adjust the duty cycle of the control signal, and the output can be adjusted by using an a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/07
CPCH02M3/07
Inventor 黎坚
Owner 杭州艾诺半导体有限公司
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