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Voltage converting circuit based on single inductor and multiple outputs

A technology of voltage conversion circuit, single inductor and multiple outputs, which is applied in the direction of output power conversion device, DC power input conversion to DC power output, electrical components, etc., and can solve the problems of having two outputs and mutual influence between two outputs, etc. Achieve the effects of small mutual influence, complete release, and improved independence

Active Publication Date: 2015-03-11
SILERGY SEMICON TECH (HANGZHOU) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a voltage conversion circuit based on a single inductor with multiple outputs, so as to solve the technical problem in the prior art that there are only two outputs and the two outputs affect each other

Method used

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  • Voltage converting circuit based on single inductor and multiple outputs
  • Voltage converting circuit based on single inductor and multiple outputs
  • Voltage converting circuit based on single inductor and multiple outputs

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Embodiment Construction

[0024] The output current sampling circuit and the output voltage compensation circuit of the power converter of the present invention will be described in more detail below in conjunction with the schematic diagram, which shows a preferred embodiment of the present invention, and it should be understood that those skilled in the art can, on the basis of this description, The specific circuits of the present invention can be changed and replaced within the scope of the claims, while still achieving the advantageous effects of the present invention. The following descriptions are not intended to limit the invention.

[0025] In the following paragraphs the invention is described more specifically by way of example with reference to the accompanying drawings. It should be noted that all the drawings are in simplified form and use inaccurate scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0026]...

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Abstract

The invention discloses a voltage converting circuit based on a single inductor and multiple outputs. The voltage converting circuit comprises a first switch tube, a second switch tube, an inductor, a first positive voltage output module and a second positive voltage output module, wherein a first end of the first switch tube receives an input voltage signal, a second end of the first switch tube is connected with one end of the inductor, and the other end of the inductor is connected with a first end of the second switch tube; input ends of the first positive voltage output module and the second positive voltage output module are connected to a common end of the inductor and the second switch tube, and output ends of the first positive voltage output module and the second positive voltage output module serve as corresponding voltage output ends; the first positive voltage output module comprises a third switch tube and a fourth switch tube which are in series-opposing connection; and the second positive voltage output module comprises a fifth switch tube. The voltage converting circuit based on single inductor and multiple outputs has more than two outputs, has wider application range and high energy utilization efficiency, and the outputs have little interaction.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a voltage conversion circuit based on a single inductor with multiple outputs. Background technique [0002] Voltage conversion circuits (power converters) are widely used in electronic products to realize voltage regulation and power conversion. Since different power supply units require different power supply voltages, multiple output voltages are required to meet the usage requirements. Usually, multiple output voltages require a power stage circuit containing multiple inductors to be realized. [0003] In order to reduce the use of peripheral devices, a single-inductor multi-output voltage conversion circuit was proposed, that is, only one inductor is included in the power stage circuit, and two different voltage outputs can be realized. However, the single-inductor multiple-output circuit in the prior art generally only has two outputs, and the two outputs are int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156
Inventor 吴孟泽范洪峰
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD
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