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Linear voltage stabilizer

A technology of linear voltage regulator and comparator, which is applied in the direction of instruments, adjusting electric variables, control/regulation systems, etc., which can solve problems such as chip damage and overheating of adjustment tubes.

Active Publication Date: 2019-06-25
西安中颖电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The voltage regulators of these two structures have the same problem, that is, they cannot solve the problem of overheating of the adjustment tube under high voltage and heavy load applications, especially in the case of poor heat dissipation of the package, which may easily lead to chip damage

Method used

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Embodiment Construction

[0029] The detailed features and advantages of the present invention are described in detail below in the specific embodiments, the content of which is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly, and according to the specification, claims and drawings disclosed in this specification , those skilled in the art can easily understand the related objects and advantages of the present invention.

[0030] The main function of the linear voltage regulator circuit is to provide a stable low-noise power supply to the internal modules of the system. The linear voltage regulator circuit is an essential and important circuit module of the microcontroller (MCU) system, and is widely used in the fields of analog integrated circuits and digital-analog hybrid integrated circuits.

[0031] There are two implementations of traditional linear regulators, digital linear regulators and analog linear r...

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Abstract

The invention provides a linear voltage stabilizer circuit. The linear voltage stabilizer circuit comprises a band-gap reference source, a clock signal generation module, a comparator, an adjusting tube selection and control circuit and an adjusting tube circuit, wherein the band-gap reference source is configured to generate a reference voltage VBG; the clock signal generation module is configured to generate clock signals CLK; the comparator is used for comparing the output voltage Vout with the reference voltage VBG at a rising edge or a falling edge of each clock signal CLK and outputtinga comparison result to the adjusting tube selection and control circuit; and the regulator tube selection and control circuit is configured to control the on / off of the adjusting tube circuit according to the high / low level of the output signal of the comparator.

Description

technical field [0001] The present invention relates to voltage regulators, and more particularly to linear voltage regulators. Background technique [0002] The main function of the linear voltage regulator circuit is to provide a stable low-noise power supply to the internal modules of the system. The linear voltage regulator circuit is an essential and important circuit module of the microcontroller (MCU) system, and is widely used in the fields of analog integrated circuits and digital-analog hybrid integrated circuits. [0003] There are two implementations of traditional linear regulators, digital linear regulators and analog linear regulators. [0004] figure 1 A digital linear regulator architecture in the prior art is shown. The digital linear voltage stabilizing circuit is composed of a comparator, a digital logic control module, a switch array adjusting tube and a power resistor. When the load current changes, the logic control module realizes the voltage stab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/565
Inventor 白胜天任小娇
Owner 西安中颖电子有限公司