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http://dx.doi.org/10.6113/JPE.2017.17.5.1372

Automotive High Side Switch Driver IC for Current Sensing Accuracy Improvement with Reverse Battery Protection  

Park, Jaehyun (Department of Electrical and Electronics Engineering, Dankook University)
Park, Shihong (Department of Electrical and Electronics Engineering, Dankook University)
Publication Information
Journal of Power Electronics / v.17, no.5, 2017 , pp. 1372-1381 More about this Journal
Abstract
This paper presents a high-side switch driver IC capable of improving the current sensing accuracy and providing reverse battery protection. Power semiconductor switches used to replace relay switches are encumbered by two disadvantages: they are prone to current sensing errors and they require additional external protection circuits for reverse battery protection. The proposed IC integrates a gate driver and current sensing blocks, thus compensating for these two disadvantages with a single IC. A p-sub-based 90-V $0.13-{\mu}m$ bipolar-CMOS-DMOS (BCD) process is used for the design and fabrication of the proposed IC. The current sensing accuracy (error ${\leq}{\pm}5%$ in the range of 0.1 A-6.5 A) and the reverse battery protection features of the proposed IC were experimentally tested and verified.
Keywords
Automotive current sensing; Automotive power switch driver; Current sensing accuracy; High side gate driver; Reverse battery protection;
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