Voltage regulation circuit and its control method based on single inductor with multiple outputs

A technology of voltage regulation circuit, single inductance and multiple outputs, which is applied in the direction of adjusting electric variable, output power conversion device, control/regulation system, etc. It can solve the problems of slope compensation, multi-channel mutual interference, etc., and achieve the effect of eliminating crosstalk

Active Publication Date: 2018-06-29
SILERGY SEMICON TECH (HANGZHOU) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the object of the present invention is to provide a single-inductance multiple-output voltage regulation circuit and its control method to solve the technical problems of slope compensation and multi-channel mutual interference in the prior art

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  • Voltage regulation circuit and its control method based on single inductor with multiple outputs
  • Voltage regulation circuit and its control method based on single inductor with multiple outputs
  • Voltage regulation circuit and its control method based on single inductor with multiple outputs

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Embodiment Construction

[0026] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made within the spirit and scope of the present invention.

[0027] In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0028] 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 t...

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Abstract

The invention discloses a voltage regulation circuit based on a single inductance with multiple outputs and a control method thereof. For an output terminal that needs to maintain independence, the corresponding current reference signal is generated by sampling and integrating the current flowing through the output terminal. This sampling method can make the feedback compensation signal correspond to the output current; when the load of other channels changes, the feedback compensation signal of the current channel can also remain unchanged, which can eliminate the problem of crosstalk generated by other channels. At the same time, the integral sampling method can keep the slope of the integrated signal positive, so there is no need to superimpose the slope signal due to sampling compensation for the negative slope.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a voltage regulation circuit based on a single inductor with multiple outputs and a control method thereof. Background technique [0002] In the prior art, since multiple different output voltages need to be considered, in order not to increase the circuit too much, the above technical problem can be solved by applying the structure of single inductor with multiple outputs to the voltage regulation circuit. [0003] However, in a single-inductor multi-output voltage regulation circuit, there are multiple output terminals, and the multiple output terminals share one inductor, and the energy of the inductor needs to be distributed to multiple outputs in each switching cycle to achieve multiple voltage stability. . Take the step-down circuit with single inductor and multiple outputs as an example, such as figure 1 Shown: [0004] The switch tubes Q1 and Q2 are the main ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/155
CPCH02M3/155H02M1/009H02M3/1557H02M3/158H02M1/38H02M3/02H02M1/0003
Inventor 杭开郎孙良伟
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD
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