JSSC 2023第12期Power Management0.18-µmBoost Converter

A Three-Level Boost Converter With Fully State-Based Phase Selection Technique f

提出一种采用全状态相位选择技术的三级电流模式升压转换器，优化飞跨电容电压校准和模式切换。

0.18-µm BCD工艺, 5.51 mm², 峰值效率95.3%, 输入2-6V, 输出5-32V, 最大负载电流0.5A

三级升压转换器电流模式控制飞跨电容自适应斜率发生器相位选择

▸全状态相位选择（FSPS）技术自适应选择操作相位，确保飞跨电容电压稳定在VO/2

▸采用自适应斜率发生器（ASG），补偿宽输出电压范围内的稳定性

▸飞跨电容在同一开关周期内以相同占空比连续充放电，平滑切换操作模式

Abstract

In this article, a three-level current-mode boost con- verter with a fully state-based phase selection (FSPS) technique is presented. The proposed FSPS technique selects the operation phase adaptively to ensure the voltage across the flying capacitor (VCF) to VO/2 and changes the operation mode of a three-level boost converter (3L-BST). It enables the flying capacitor to be charged or discharged consecutively at the same duties every switching period and the operation mode to be changed smoothly