High-speed current sensor IC eases assembly and enhances stability

04-02-2021 | Melexis | Automotive & Transport

Melexis has released the MLX91216 XHF extra high-field current sensor, increasing the ease and accuracy of its unique IMC-Hall technology into high-current measurement for developing automotive applications.

Able to measure current to beyond 2000 A, the sensor is ideal for redundant monitoring of battery-management systems, over-current detection in smart fuses, and measuring phase currents in traction inverters and boost/recuperation inverters. With user-programmable filtering to alter resolution, response time and bandwidth for optimum SNR, the sensor offers built-in diagnostics, including broken-wire detection.

The device extends the family of Melexis IMC-Hall sensors that offer accurate, high-speed current measurement for a wide variety of automotive and industrial applications.

The MLX91216 High Field (HF) versions measure 200A to 600A; the MLX91216 Very High Field (VHF) versions from 400A to 1200A; and the MLX91216 eXtra High Field (XHF) versions 800A to 2000A.

The MLX91216 XHF is AEC-Q100 Grade-0 qualified for automotive applications and functions over the temperature range -40C to +150C. The sensor has a broad measurement range from ±20mT to ±350mT with linearity down to ±0.2% full scale, 2μs response time, and high thermal stability with offset drift below 5mV and sensitivity drift within 1%.

By Natasha Shek