Design and Implementation of Protected Smart High Side and Low Side Switch and Drivers in  0.18um HV BCD CMOS Technology

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Kachuee, Sajjad | 2019

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 52034 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Medi, Ali; Zolghadri, Mohammad Reza
Abstract:
In this thesis, two types of smart switch & driver chips are designed in 0.18 um HV BCD technology; low side driver and high side driver. These drivers are smart, because of having various types of protection and detection circuits, which protect switch, driver and connected load, versus errors that can be occurred by the user or other environmental effects. The protection circuits are battery over & under voltage shutdown, current limit, inductive load clamper and thermal shutdown. Load status is checked by status detection circuit and reported to user by one bit flag. Battery voltage can vary from 7 V to 40 V and output current is limited to 2 A. Designed high side and low side drivers are capable to drive wide range of inductive loads and these chips are specifically designed for automotive usages, so various standard tests are planed like ISO pulse, ESD and thermal tests. Implemented chips are tested in standard test setups and their function is measured. The results of the chips under these tests were completely satisfying
Keywords:
Smart Driver ; High-Side Driver ; Low-Side Driver ; Load ; Clamper ; High Voltage CMOS Technology ; Charge-Pump System

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