Reliably charging an electric car at speed seems like a mundane task. Still, with dozens of different battery technologies, and EVs coming from various automakers, ensuring real-time, accurate current monitoring and control is crucial to ensure highly reliable operation. This is not only true for charging, but also for controlling current in electric motors, OBC/DC-DC converters, PTCs, and even fuel cell systems in hydrogen vehicles.
NOVOSENSE’s latest current sensors of the NSM211x family, are engineered to detect AC or DC detection in various automotive applications. They support 3.3V and 5V power supply voltages, too, and can measure currents within a broad range of 5-200 Additional features include optional reference voltage output, overcurrent protection output, and customizable overcurrent protection thresholds.
These low-impedance sensors also comply with AEC-Q100 Grade 0 reliability standards and work reliably at temperatures ranging between -40 °F and 302 °F (40 °C to 150 °C). Furthermore, the sensor allows for rapid loop control and overcurrent protection thanks to a low response time of 400 ns, and a -3 dB bandwidth of up to 1 MHz. Each sensor of the new range offers an isolation voltage withstand of 5,000 Vrms (in line with UL standards) and a creepage distance of up to 8.2mm, with a continuous isolation voltage rating of 1,618 Vpk.
The NSM211x range consists of three different package types – SOP8, SOW16, and SOW10, each with varying primary side impedances of 1.2 mΩ, 0.85 mΩ/1 mΩ, and an industry-leading 0.27 mΩ. NOVOSENSE went even further and equipped the sensors with temperature compensation algorithms and offline calibration to maintain high measurement accuracy (with sensitivity error under ±2% and offset error below ±10 mV) over the full temperature range, eliminating the need for secondary adjustments.
NOVOSENSE will showcase the NSM211x range at the “electronica 2024” trade fair for electronica at Stand B5.450.
