Hybrid power converter and control method thereof

A power converter and hybrid power technology, which is applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problem of capacitor 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 problems, to achieve the effect of miniaturization, low switching loss, and low conduction loss

CN111682756AActive Publication Date: 2020-09-18杭州艾诺半导体有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-09-18

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Abstract

The invention discloses a hybrid power converter and a control method thereof. The hybrid power converter comprises an inductor connected to a first end of the hybrid power converter, and a switched capacitor network is connected between the inductor and the second end of the hybrid power converter, wherein the switched capacitor network comprises a plurality of switching elements and a pluralityof capacitors; the switching elements are controlled to be turned on and off according to a plurality of control signals so as to periodically change connection paths of the plurality of capacitors such that the inductor and the plurality of capacitors are charged and discharged, the hybrid power converter adjusts a duty cycle of the control signal so as to convert an input voltage into a desiredoutput voltage. The hybrid power converter can improve the output voltage regulation capability of the circuit, realize circuit miniaturization and improve the conversion efficiency of the circuit.
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Description

technical field

[0001] The present invention relates to a power converter, and 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 ...

Examples

Embodiment Construction

[0038] 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.

[0039] 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 ...