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Boost circuit and its control method

A booster circuit and circuit technology, which is applied in the direction of control/regulation system, electrical components, and adjustment of electrical variables, etc., can solve the problems of low system bandwidth and slow transient response, and achieve high system bandwidth, high circuit efficiency, and circuit structure simple effect

Active Publication Date: 2018-08-03
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the boost circuit controlled by peak current, in order to ensure the stability of the circuit system, the system bandwidth is low, that is, the transient response is slow

Method used

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  • Boost circuit and its control method
  • Boost circuit and its control method

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, materials or methods have not been described in detail in order to avoid obscuring the present invention.

[0018] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in...

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Abstract

The present invention proposes a voltage boosting circuit, and the voltage boosting circuit uses a fixed-time-length conduction circuit to control switches in the voltage boosting circuit. The boost circuit includes an input port, an output port, an inductor, a pull-up switch, a pull-down switch and a control circuit. In each switching cycle, the control circuit controls the pull-down switch to be turned on for a fixed period of time. The boost circuit provided by the invention has simple structure and high system bandwidth, so it has better transient characteristics. At the same time, the boost circuit provided by the invention has fixed switching frequency under different input voltage and output voltage conditions, and has high circuit efficiency under light load conditions.

Description

technical field [0001] The present invention relates to an electronic circuit, and more specifically, the present invention relates to a switch circuit and a control method thereof. Background technique [0002] The traditional boost circuit (BOOST) usually adopts the peak current control mode. In the boost circuit controlled by peak current, in order to ensure the stability of the circuit system, the system bandwidth is low, that is, the transient response is slow. [0003] Therefore, there is a need to propose a boost circuit with simple circuit structure, high system bandwidth and high circuit efficiency. Contents of the invention [0004] In consideration of one or more technical problems in the prior art, a boost circuit and a control method thereof are proposed. [0005] According to an embodiment of the present technology, a boost circuit with a fixed switching frequency is proposed, including: an input port receiving an input voltage; an output port providing an ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/155
CPCH02M3/1588Y02B70/10H02M1/0009H02M1/08H02M3/158
Inventor 李伊珂
Owner CHENGDU MONOLITHIC POWER SYST