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Control circuit of switch-type adjuster and control method thereof

A control circuit, switch-type technology, applied in the field of electronics, can solve the problems of long recovery time, complex circuit structure, slow response speed, etc., to achieve the effect of improving the dynamic response speed

Active Publication Date: 2012-09-19
安徽乐图电子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the load of the switch-type regulator jumps, such as the load changes from light load to heavy load, or from heavy load to light load, for the existing control mode of the switch-type regulator, due to the control circuit Usually an error amplifier is needed to amplify the error between the sampling value of the main circuit output voltage and the reference voltage value, the circuit structure is complex, and a suitable compensation network is required to ensure the stability of the system; and the dynamic response performance is limited by the system bandwidth. Slower to respond and require longer recovery times

Method used

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  • Control circuit of switch-type adjuster and control method thereof
  • Control circuit of switch-type adjuster and control method thereof
  • Control circuit of switch-type adjuster and control method thereof

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Embodiment Construction

[0072] Several 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 on the spirit and scope of the present invention. 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.

[0073] refer to figure 2 , shows a functional block diagram of a control circuit of a switching regulator according to the first embodiment of the present invention. In this embodiment, the power stage circuit 204 of the switching regulator adopts a step-down topology as an example for illustration. The power stage circuit 204 includes ...

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Abstract

The invention provides a novel control circuit of a switch-type adjuster and a control method thereof. When the load jumping occurs on the switch-type adjuster, the control circuit generates a dynamic control signal to control the state of the switch-type adjuster, so that the output voltage can be quickly restored; and when no load jumping occurs on the switch-type adjuster, the control circuit generates a stable control signal to control the state of the switch-type adjuster so as to maintain the output voltage constant, so that the dynamic response performance of the switch-type adjuster is improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a control circuit of a switching regulator and a control method thereof. Background technique [0002] Switching regulators are widely used in the prior art to provide stable voltage sources for various electrical systems. High-efficiency switching regulators (eg, DC-DC converters) are especially required for battery management in low-power devices (eg, laptops, cell phones, etc.). Switching regulators convert the input DC voltage to a high frequency voltage, and then filter the high frequency output voltage to convert it to a DC output voltage. Specifically, a switching regulator usually consists of two parts, a power stage circuit and a control circuit. The function of the control circuit is to adjust the turn-on and turn-off time of the switching system in the power stage circuit when the input voltage, internal parameters and external load change, so as to keep the outp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/10
Inventor 张晓峰
Owner 安徽乐图电子科技股份有限公司