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Output voltage regulation device and method

A technology of output voltage and adjustment device, which is applied in the direction of output power conversion device, adjustment of electrical variables, control/regulation system, etc., can solve problems such as overshoot or over-drop

Inactive Publication Date: 2017-05-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides an output voltage regulation device and method, which are used to realize rapid voltage regulation and solve the problem of overshoot or overdrop in the process of output voltage regulation

Method used

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  • Output voltage regulation device and method
  • Output voltage regulation device and method

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Embodiment Construction

[0023] Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0024] The basic idea of ​​the voltage regulation scheme in the embodiment of the present application is to add a voltage regulation circuit to the output voltage regulation device, and to fix the reference voltage V in the control circuit REF On the basis of constant, change the feedback voltage V in the control circuit through the voltage regulation circuit FB node current to achieve fast regulation of the output voltage V O , In this way, not only can the rapid adjustment of the output voltage be realized, but also the phenomenon of overshoot, over-drop or glitch in the process of output voltage adjustment can be suppressed, and the time from adjustment to stable voltage can be effectively shortened.

[0025] The embodiment of the present application can be applied to fast voltage regulation equipment related to DC to DC Converter (DC to DC Conve...

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Abstract

The invention relates to the field of power management, and discloses an output voltage regulation device and method used for achieving rapid voltage regulation and restraining overshooting or over-dropping in output voltage regulation. The device comprises a voltage regulation circuit, a control circuit, a power-level circuit, a filter network and feedback network. The input end of the feedback network is connected with the output end of the filter network and used for collecting the output voltage VO of the filter network, the output end of the feedback network is connected with a feedback voltage node of the control circuit and used for outputting feedback voltage to the feedback voltage node of the control circuit, and the output end of the voltage regulation circuit is connected between the output end of the feedback network and the feedback voltage node of the control circuit and sued for regulating the current I of the feedback voltage node; the output end of the control circuit is connected with the input end of the power-level circuit and used for regulating the output duty ratio of the filter network according to the current I of the feedback voltage node, and the filter network is used for filtering the output duty ratio to obtain the regulated output voltage VO.

Description

technical field [0001] The embodiments of the present application relate to the field of power management, and in particular to an output voltage regulating device and method. Background technique [0002] In recent years, consumer electronic products such as smartphones and tablet computers have shown a trend of rapid development. Power Management IC (PMIC) is a power device used to manage the host system of consumer electronic products. PMIC has a high degree of integration , high conversion efficiency, low cost and other advantages. The integrated voltage modulator (Intergraded voltage regulator, IVR) is an important part of the PMIC. With the rapid upgrading of consumer electronic products, the requirements for IVR performance are getting higher and higher. In order to save system power consumption, it is necessary to adjust the output voltage of the IVR in real time, dynamically and quickly according to the load of the subsequent stage. [0003] In the prior art, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
CPCG05F1/561H02M3/157H02M1/0025G05F1/575
Inventor 汪家轲陈亮邹鹏
Owner HUAWEI TECH CO LTD
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