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논문 기본 정보

자료유형
학술저널
저자정보
Chang-woo Lee (Mando Global R&D Center) Oh-kyong Kwon (Hanyang University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.20 No.4
발행연도
2020.8
수록면
357 - 365 (9page)
DOI
10.5573/JSTS.2020.20.4.357

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초록· 키워드

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In this paper, we propose a highly accurate low-side solenoid valve driver with a current sense-and-mirror circuit for electric brake booster systems in automotive applications. The proposed low-side solenoid valve driver employs a midpoint current sensing method, which senses the solenoid coil currents at the moment when it is turned on and off, and averages the sensed currents, thus achieving a highly accurate current. In addition, it integrates only a low-side power MOS transistor into the chip, thus reducing the power dissipation. The proposed low-side solenoid valve driver was fabricated using a 0.11 μm Bipolar-CMOS-DMOS (BCDMOS) process. The measurement results show that the current accuracy of the proposed low-side solenoid valve driver was improved by up to 8% compared with that of the conventional Ton/2 current sensing method. In addition, the power dissipation of the proposed solenoid valve driver was reduced to 44% less than that of the conventional high- and low-side solenoid valve driver. Therefore, the proposed solenoid valve driver is suitable for electric brake booster systems requiring highly accurate current and low power dissipation.

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Abstract
I. INTRODUCTION
II. ARCHITECTURE AND OPERATING PRINCIPLE
III. CIRCUIT DESCRIPTION
IV. MEASUREMENT RESULTS
V. CONCLUSIONS
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