A highly accurate solenoid valve driver with current sensing circuits for brake systems

IEICE Electronics Express

Oh-kyong Kwon¹  Chang-woo Lee³ 

[1] D Center;Department of Electronics Engineering, Hanyang University;Mando Global R&

关键词: solenoid valve driver;    current sensing;    ESC;    ABS;    ECU;    BCDMOS;   

DOI  :  10.1587/elex.15.20171029

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

In this paper, we propose a highly accurate solenoid valve driver with high- and low-side current sensing circuits. The proposed solenoid valve driver improves the current accuracy by sensing the current of the solenoid coil alternately in the on- and off-states of the power MOS transistor. In the on-state, the low-side sensing circuit senses the current flowing through the low-side transistor. In the off-state, the high-side sensing circuit senses the current flowing through the high-side transistor. The proposed solenoid valve driver was implemented using a 0.11 µm BCDMOS process. The measurement results show that the proposed solenoid valve driver achieves a high current accuracy of less than ±4% over the entire current range from 0 A to 2.25 A.

【 授权许可】

CC BY