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A 60-V, >\hbox {225} ^{\circ}\hbox {C} Half-Bridge Driver for Piezoelectric Acoustic Transducer, on SOI CMOS

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4 Author(s)
Jun Yu ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore ; Wang Ling Goh ; Arasu, M.A. ; Minkyu Je

This brief presents a high-voltage (HV) transducer driver to fulfill the requirement of the proposed high-data-rate down-hole acoustic telemetry system. The driver is targeted to drive a stack of piezoelectric disks modeled as a capacitive load of 0.3 μF and across a broadband from 600 Hz to 1.2 kHz. To ensure stability, the driver is designed as an open-loop system, comprising a dead-time controller, level shifters, gate drivers, and power MOSFETs. The driver is fabricated using the 1.0- μm silicon-on-insulator CMOS process and its performance is investigated up to 260 °C, far beyond the specified process limit of 225 °C. The experimental results also validated the functionality of the HV Class-D-type driver for voltages up to 60 V.

Published in:

Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:59 ,  Issue: 11 )

Date of Publication:

Nov. 2012

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