Fully integrated high-voltage front-end interface for ultrasonic sensing applications

被引：40

作者：

Chebli, Robert ^{[1
]}

Sawan, Mohamad ^{[1
]}

机构：

[1] Ecole Polytech, Dept Elect Engn, PolySTIM Neurotechnol Lab, Montreal, PQ H3C 3A7, Canada

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2007年 / 54卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

DC-DC converter; drive amplifier; high-voltage (HV) process; sensor interface; ultrasonic sensor;

D O I：

10.1109/TCSI.2006.888675

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper concerns the design and implementation of a fully integrated high-voltage (HV) front-end transducer for ultrasonic sensing applications. This includes a programmable HV dc-dc converter (HVDC), a drive amplifier, and a tuneable pulse generator. The HVDC is based on a multistage two-phase voltage doubler and static level up shifters. The drive amplifier is composed of a static level-up stage and a Class-D switching output stage. Post-layout simulation and experimental silicon results are reported for two HVDC stages and a drive amplifier, which were fabricated using a 0.8-mu m CMOS/DMOS process and having a supply voltage of 5 V/400 V. The measurement results confirm the validation of the HV circuit implementation and its design optimization. An output voltage of up to 200 V was obtained from the HVDC. Also, the drive amplifier generates spikes up to 148 V, with rise and fall times of 69 and 58 ns, respectively. The peak current flowing through the transducer element can be as high as 200 mA.

引用

页码：179 / 190

页数：12

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