This letter presents the most accurate shunt-based high-side current sensor ever reported. It achieves a 25 V input common-mode range from a single 1.8-V supply by using a beyond-the-rails ADC. A hybrid analog/digital temperature compensation scheme is proposed to simplify the circuit implementation while maintaining the state-of-the-art accuracy. Over a ±12-A current range, the sensor exhibits 0.35% gain error from -40 °C to 85 °C with 3× better power efficiency.
Original languageEnglish
Pages (from-to)94-97
Number of pages4
JournalIEEE Solid State Circuits Letters
Issue number4
Publication statusPublished - 2018

    Research areas

  • ΔΣ ADC, current sensor, high voltage (HV), high-side current sensing, shunt resistor, temperature compensation, temperature sensor

ID: 46985373