An Integrated BiCMOS driver chip for medium power applications

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Title: An Integrated BiCMOS driver chip for medium power applications
Author: Ting, Goodwin
Abstract: The development of an integrated driver circuit intended for medium power switching applications is presented. The device contains, on one chip, CMOS digital control logic and bipolar drivers, with BiCMOS interface between the two technologies. The custom integrated circuit includes four outputs each capable of switching over 500 mA at 30 volts, at a frequency of up to 1 MHz. The development effort includes the design of the chip with its component circuits and cells. Standard cell CMOS logic gates along with drive and interface circuits were designed and characterized. An appropriate BiCMOS process was developed which utilizes an n-well based 4-micron polysilicon gate MOS technology and vertical NPNs with subcollector and double emitter implants. The chip performance specifications are evaluated with respect to technology requirements and device characteristics, and trade-offs in the design of the chip and the process are examined. Process and device modeling results are compared with the measured data, which show that the objectives of the design are successfully met for the various applications involving resistive, capacitive, and inductive loads.
Record URI: http://hdl.handle.net/1850/11291
Date: 1991-08

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