Fast output voltage-regulated pwm buck converter with an adaptive ramp amplitude control

Ji Soo Chang; Hyoung Seok Oh; Young Hyun Jun; Bai Sun Kong

doi:10.1109/TCSII.2013.2277986

Fast output voltage-regulated pwm buck converter with an adaptive ramp amplitude control

Ji Soo Chang
, Hyoung Seok Oh
, Young Hyun Jun
, Bai Sun Kong

Department of Semiconductor Systems Engineering

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

45 Scopus citations

Abstract

This brief presents a pulsewidth modulation buck converter with an adaptive ramp amplitude control. The proposed buck converter can improve the load transient response and the reference tracking speed. A chip was fabricated in a 0.18-$\mu\hbox{m}$ CMOS technology. Measurement results showed that the overshoot/undershoot at the output during the load transient period was reduced by up to 57% for a 450-mA load current step and that the reference tracking speed was improved by up to 71% for a 1.5-V output voltage change. The measured maximum power conversion efficiency was 92.6% at 3-MHz switching frequency when input and output voltages are 3.3 and 2 V, respectively.

Original language	English
Article number	6587743
Pages (from-to)	712-716
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	60
Issue number	10
DOIs	https://doi.org/10.1109/TCSII.2013.2277986
State	Published - 2013

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Buck converter
compensation
fast load transient response
pulsewidth modulation (PWM)
reference tracking

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10.1109/TCSII.2013.2277986

Cite this

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title = "Fast output voltage-regulated pwm buck converter with an adaptive ramp amplitude control",

abstract = "This brief presents a pulsewidth modulation buck converter with an adaptive ramp amplitude control. The proposed buck converter can improve the load transient response and the reference tracking speed. A chip was fabricated in a 0.18-\$\textbackslash{}mu\textbackslash{}hbox\{m\}\$ CMOS technology. Measurement results showed that the overshoot/undershoot at the output during the load transient period was reduced by up to 57\% for a 450-mA load current step and that the reference tracking speed was improved by up to 71\% for a 1.5-V output voltage change. The measured maximum power conversion efficiency was 92.6\% at 3-MHz switching frequency when input and output voltages are 3.3 and 2 V, respectively.",

keywords = "Buck converter, compensation, fast load transient response, pulsewidth modulation (PWM), reference tracking",

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AU - Chang, Ji Soo

AU - Oh, Hyoung Seok

AU - Jun, Young Hyun

AU - Kong, Bai Sun

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Y1 - 2013

N2 - This brief presents a pulsewidth modulation buck converter with an adaptive ramp amplitude control. The proposed buck converter can improve the load transient response and the reference tracking speed. A chip was fabricated in a 0.18-$\mu\hbox{m}$ CMOS technology. Measurement results showed that the overshoot/undershoot at the output during the load transient period was reduced by up to 57% for a 450-mA load current step and that the reference tracking speed was improved by up to 71% for a 1.5-V output voltage change. The measured maximum power conversion efficiency was 92.6% at 3-MHz switching frequency when input and output voltages are 3.3 and 2 V, respectively.

AB - This brief presents a pulsewidth modulation buck converter with an adaptive ramp amplitude control. The proposed buck converter can improve the load transient response and the reference tracking speed. A chip was fabricated in a 0.18-$\mu\hbox{m}$ CMOS technology. Measurement results showed that the overshoot/undershoot at the output during the load transient period was reduced by up to 57% for a 450-mA load current step and that the reference tracking speed was improved by up to 71% for a 1.5-V output voltage change. The measured maximum power conversion efficiency was 92.6% at 3-MHz switching frequency when input and output voltages are 3.3 and 2 V, respectively.

KW - Buck converter

KW - compensation

KW - fast load transient response

KW - pulsewidth modulation (PWM)

KW - reference tracking

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JO - IEEE Transactions on Circuits and Systems II: Express Briefs

JF - IEEE Transactions on Circuits and Systems II: Express Briefs

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ER -

Fast output voltage-regulated pwm buck converter with an adaptive ramp amplitude control

Abstract

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Keywords

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