Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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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)
  • Received : 2017.02.02
  • Accepted : 2017.05.21
  • Published : 2017.09.20
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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.

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References

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