A dynamic buck converter with ultra fast response and low voltage ripples designed for DVS systems

Pei Liu; Jun Liu; Li Geng

doi:10.1587/elex.6.1490

A dynamic buck converter with ultra fast response and low voltage ripples designed for DVS systems

Pei Liu
, Jun Liu
, Li Geng

Faculty of Electronic and Information Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

This letter presents a buck converter for the dynamic voltage scaling systems where the supply voltage is dynamically adjusted to the minimum value required by the applications. A voltage controlled delay line based PWM controller is designed to simplify the structure for the purpose of energy saving. In order to speed up the transient response, the pseudo-continuous conduction mode and the pulse division technique are used. When the switching frequency f is 800kHz and the input voltage is 3.3V, the output voltage of the converter is dynamically modulated from 1.7V to 2.8V according to a changeable reference clock f_ref from 70MHz to 140MHz. A fast transient response of 5.27μs for a step voltage change from standby to the maximum operation is obtained. The output voltage ripple is less than 2mV.

Original language	English
Pages (from-to)	1490-1496
Number of pages	7
Journal	IEICE Electronics Express
Volume	6
Issue number	21
DOIs	https://doi.org/10.1587/elex.6.1490
State	Published - 10 Nov 2009

Keywords

Dynamic voltage scaling
Fast response
Low ripple

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10.1587/elex.6.1490

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abstract = "This letter presents a buck converter for the dynamic voltage scaling systems where the supply voltage is dynamically adjusted to the minimum value required by the applications. A voltage controlled delay line based PWM controller is designed to simplify the structure for the purpose of energy saving. In order to speed up the transient response, the pseudo-continuous conduction mode and the pulse division technique are used. When the switching frequency f is 800kHz and the input voltage is 3.3V, the output voltage of the converter is dynamically modulated from 1.7V to 2.8V according to a changeable reference clock fref from 70MHz to 140MHz. A fast transient response of 5.27μs for a step voltage change from standby to the maximum operation is obtained. The output voltage ripple is less than 2mV.",

keywords = "Dynamic voltage scaling, Fast response, Low ripple",

author = "Pei Liu and Jun Liu and Li Geng",

year = "2009",

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doi = "10.1587/elex.6.1490",

language = "英语",

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T1 - A dynamic buck converter with ultra fast response and low voltage ripples designed for DVS systems

AU - Liu, Pei

AU - Liu, Jun

AU - Geng, Li

PY - 2009/11/10

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N2 - This letter presents a buck converter for the dynamic voltage scaling systems where the supply voltage is dynamically adjusted to the minimum value required by the applications. A voltage controlled delay line based PWM controller is designed to simplify the structure for the purpose of energy saving. In order to speed up the transient response, the pseudo-continuous conduction mode and the pulse division technique are used. When the switching frequency f is 800kHz and the input voltage is 3.3V, the output voltage of the converter is dynamically modulated from 1.7V to 2.8V according to a changeable reference clock fref from 70MHz to 140MHz. A fast transient response of 5.27μs for a step voltage change from standby to the maximum operation is obtained. The output voltage ripple is less than 2mV.

AB - This letter presents a buck converter for the dynamic voltage scaling systems where the supply voltage is dynamically adjusted to the minimum value required by the applications. A voltage controlled delay line based PWM controller is designed to simplify the structure for the purpose of energy saving. In order to speed up the transient response, the pseudo-continuous conduction mode and the pulse division technique are used. When the switching frequency f is 800kHz and the input voltage is 3.3V, the output voltage of the converter is dynamically modulated from 1.7V to 2.8V according to a changeable reference clock fref from 70MHz to 140MHz. A fast transient response of 5.27μs for a step voltage change from standby to the maximum operation is obtained. The output voltage ripple is less than 2mV.

KW - Dynamic voltage scaling

KW - Fast response

KW - Low ripple

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DO - 10.1587/elex.6.1490

M3 - 文章

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SN - 1349-2543

VL - 6

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EP - 1496

JO - IEICE Electronics Express

JF - IEICE Electronics Express

IS - 21

ER -

A dynamic buck converter with ultra fast response and low voltage ripples designed for DVS systems

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Keywords

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