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A Symmetric Modified Multilevel Ladder PMIC for Battery-Connected Applications
IEEE Journal of Solid-State Circuits ( IF 5.4 ) Pub Date : 2020-03-01 , DOI: 10.1109/jssc.2019.2957658
Abdullah Abdulslam , Patrick P. Mercier

This article describes a symmetric modified multilevel ladder (SMML) converter that is capable of directly converting down from Li-ion battery voltage ranges to system-on-chip (SoC)-compatible voltage ranges while using low-voltage power MOSFETs in the power stage. Compared to conventional flying-capacitor multilevel converters, the SMML converter features reduced conduction losses, naturally balanced flying capacitors, and internal generation of all the supplies required for drivers and level shifters. A prototype shows that the converter achieves a peak efficiency of 90% and a peak power density of 0.52 W/mm2 while providing up to 16.7 $\times $ conversion ratios at still acceptable efficiencies.

中文翻译:

一种用于电池连接应用的对称改进型多电平梯形 PMIC

本文介绍了一种对称修改多级梯形 (SMML) 转换器,该转换器能够在功率级使用低压功率 MOSFET 的同时,直接将锂离子电池电压范围向下转换为与片上系统 (SoC) 兼容的电压范围. 与传统的飞跨电容多电平转换器相比,SMML 转换器具有更低的传导损耗、自然平衡的飞跨电容以及驱动器和电平转换器所需的所有电源的内部生成。原型显示转换器实现了 90% 的峰值效率和 0.52 W/mm 2的峰值功率密度,同时提供高达 16.7 $\times $ 转化率仍然可以接受。
更新日期:2020-03-01
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