JSSC 2012第2期Other标准CMOS

A 25 kV Isolation 35 kVus CMR 250 Mbps Digital Isolator in Standard CMOS With a

提出一种基于片上变压器的小型数字隔离器，适用于电源控制系统，具有高隔离电压和高速数据传输能力。

2.5 kV隔离电压，35 kV/us CMR，1.6 mA静态电流，250 Mbps数据速率

数字隔离器片上变压器电源控制高速数据传输CMOS

▸采用脉冲生成和检测方案，使5V标准CMOS晶体管能够利用GHz信号

▸变压器面积减少至传统变压器的1/4-1/8

▸支持高隔离电压和高速数据传输

Abstract

A small-size on-chip transformer-based digital iso- lator for power control systems is proposed. With a proposed pulse generation and detection scheme that enables a 5 V standard CMOS transistor to utilize GHz-ba nd signals, transformer area is reduced to 1/4–1/8 that of conventional transformers. A test chip achieves a 2.5 kV isolation voltage, a 35 kV/us CMR, a 1.6 mA static current and a 250 Mbps data rate, all which are equal to or superior to those of optocouplers o r conventional digital i