Design and Modeling of a High Efficiency Step-Up/Step-Down DC-DC Converter with Smooth Transition
スポンサーリンク
概要
- 論文の詳細を見る
This paper presents a step-up/step-down DC-DC converter with three operation modes to achieve high efficiency and small output ripple voltage. A constant time buck-boost mode, which is inserted between buck mode and boost mode, is proposed to achieve smooth transition. With the proposed mode, the output ripple voltage is significantly reduced when the input voltage is approximate to the output voltage. Besides, the novel control scheme minimizes the conduction loss by reducing the average inductor current and the switching loss by making the converter operate like a buck or boost converter. The small signal model of the step-up/step-down DC-DC converter is also derived to guide the compensation network design. The step-up/step-down converter is designed with a 0.5µm CMOS n-well process, and can regulate an output voltage within the input voltage ranged from 2.5V to 5.5V with a maximum power efficiency of 96%. The simulation results show that the proposed converter exhibits an output ripple voltage of 28mV in the transition mode.
- （社）電子情報通信学会の論文
- 2011-02-01
著者
-
Chen Guican
School Of Electronic And Information Engineering Xi'an Jiaotong University
-
MA Yanzhao
School of Electronic and Information Engineering, Xi'an Jiaotong University
-
WANG Hongyi
School of Electronic and Information Engineering, Xi'an Jiaotong University
-
Ma Yanzhao
School Of Electronic And Information Engineering Xi'an Jiaotong University
-
Wang Hongyi
School Of Electronic And Information Engineering Xi'an Jiaotong University
関連論文
- Design and Modeling of a High Efficiency Step-Up/Step-Down DC-DC Converter with Smooth Transition
- A High Efficiency Hybrid Step-Up/Step-Down DC-DC Converter Using Digital Dither for Smooth Transition
- A novel two-channel time-interleaved second-order ΣΔ modulator