A 1.5W 10V-Output Class-D Amplifier Using a Boosted Supply from a Single 3.3V Input in Standard 1.8V/3.3V 0.18µm CMOS

📋 论文概要

该论文提出了一种在标准1.8V/3.3V 0.18µm CMOS工艺中实现的D类放大器，通过升压电源技术从单个3.3V输入产生10V输出，输出功率达1.5W。解决了在低电压标准CMOS工艺中实现高电压输出应用（如LED和MEMS驱动器）的难题。

💡 主要创新点

• 采用堆叠器件原理，在标准低电压CMOS工艺中实现高电压耐受能力，无需昂贵的工艺扩展。
• 集成升压电源，从单一3.3V输入产生10V供电，使D类放大器能够输出高电压大功率。

🏷 关键词

📄 原文摘要

Pressure to integrate more functionality and complexity on chip, to lower area and cost and to reduce time to market, drives IC technologies towards standard nanometer low voltage CMOS. A common practice to bridge the gap with highvoltage requiring applications, such as LED and MEMS drivers is to use costly extensions/options on the digital CMOS technology for tolerating voltages beyond the nominal supply. Solutions in mainstream CMOS were presented in the past using the principle of stacking devices [1]. The operation of these circuits, however, relies on the presence of multiples of the nominal supply voltage (e.g., 2VDD, 3VDD, …) for reliable operation. The generation of these voltages and the high supply rail itself externally will inevitably increase the bill of materials (BOM). In [2] a step-up converter has been proposed in a low-voltage CMOS technology. However, the conversion is performed by a switched-inductor stage followed

👥 作者与机构

Bert Serneels, Eldert Geukens, Bram De Muer, Tim Piessens

ICsense, Leuven, Belgium