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Voltage conversion circuit, method and multi-phase parallel power supply system

A technology of voltage conversion circuits and sub-circuits, which is applied in the electronic field and can solve problems such as the unfixed operating frequency of DC-DC converters

Active Publication Date: 2018-06-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a voltage conversion circuit, method and multi-phase parallel power supply system to solve the problem that the operating frequency of the hysteretic mode DC-DC converter in the prior art is not fixed

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Embodiment Construction

[0067] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0068] The embodiment of the present invention can implement a frequency-controllable voltage conversion circuit. It should be noted that the "frequency controllable" in the embodiment of the present invention specifically refers to any fixed frequency, such as 5HZ, 8HZ, and 8HZ. It is flexibly set according to the demand of the load of the voltag...

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Abstract

Embodiments of the present invention provide a voltage conversion circuit, a method, and a multi-phase parallel power supply system. The voltage conversion circuit of the present invention provides a frequency-controllable feedback ripple signal through the feedback circuit, so that the operating frequency of the voltage conversion circuit in this implementation can be controlled, which can meet the frequency requirements of the load, and the hysteresis mode does not need compensation and has a fast response speed. The frequency is fixed, so the voltage conversion circuit of this embodiment can be applied to a multi-phase parallel power supply system to meet the application scenario of a large load current.

Description

technical field [0001] Embodiments of the present invention relate to electronic technology, and in particular to a voltage conversion circuit, method and multi-phase parallel power supply system. Background technique [0002] A DC-DC (Direct Current, DC for short) converter is a circuit topology that converts an input DC voltage into an output DC voltage. According to the characteristics of the buck-boost system, DC-DC converters can be divided into: boost type (BOOST), buck type (BUCK) and buck-boost type (BUCK-BOOST). Generally, low-power DC-DC converters adopt the structure of step-down (BUCK) and boost (BOOST). Compared with the traditional linear power supply system, the conversion efficiency of the BUCK-type DC-DC converter is higher and more energy-saving. , the efficiency can reach more than 80%, and it has been widely used in various products of mobile base stations and consumer terminals. [0003] In the existing relatively mature DC-DC converters, pulse width m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156H02M3/158
CPCH02M1/08H02M3/1582H03K5/04H03K7/08H02M1/0025H02M3/1586H02M3/158H02M3/1584
Inventor 黄晨
Owner HUAWEI TECH CO LTD
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