NSM211x Series automotive grade current sensors without external isolation components

     NOVOSENSE Microelectronics has introduced the NSM211x, a series of automotive-grade, completely integrated high-bandwidth, high-isolation current sensors that guarantee accurate current measurement while obviating the necessity for extra isolation components.

     The automotive-grade series, to be exhibited at electronica 2024 (Stand B5.450), is designed for applications such as OBC/DC-DC converters, PTCs, automotive motor control, charging station current sensing, and fuel cell systems.

     The series is certified to comply with AEC-Q100 Grade 0 reliability standards, engineered for stable operation across a broad temperature range (-40 to 150°C), and caters to AC or DC current detection in automotive applications, featuring high isolation voltage, robust current handling capacity, and exceptional reliability.

     The NSM211x series offers a -3 dB bandwidth of up to 1 MHz and a response time of 400 ns, facilitating quick loop control and overcurrent protection in control systems. The series includes a creepage distance of up to 8.2mm and an isolation voltage withstand of 5,000 Vrms according to UL standards, with a maximum operating isolation voltage of 1,618 Vpk.

     It is offered in three packing configurations: SOP8, SOW16, and SOW10. The major side impedances are 1.2 mΩ, 0.85 mΩ/1 mΩ, and an industry-leading 0.27 mΩ, SOP8, SOw16, and SOw10. The major side impedances are 1.2 m ω, 0.85 m ω /1 m ω, and an industry-leading 0.27 m ω, with a continuous current handling capacity of up to 100 A. Each package offers multiple product models.

     The modern sensors incorporate inbuilt temperature adjustment algorithms and offline calibration to achieve high measurement accuracy (±2 percent sensitivity error and ±10 mV offset error) throughout the whole temperature range, without requiring further programming. The NSM211x series accommodates power supply voltages of 3.3V and 5V, enabling both DC and AC measurements within a range of 5 to 200 A. It includes choices for reference voltage output, overcurrent protection output, and adjustable overcurrent protection levels.