MLX91241 / 250-kHz Conventional-Hall 1-pin-programmable
The MLX91241 is a monolithic Hall-effect current sensor IC sensitive to flux density applied orthogonally to the IC surface, delivering an analog output voltage proportional to magnetic flux density. Engineered specifically for high-power monitoring in electrification systems, such as EV traction inverters, 48 V boost recuperation, DC-DC converters, and solar inverters, it delivers fast response in high-speed power electronics.
Engineering samples available in limited quantities
MLX91241 Features and benefits
- End-of-line programmable sensor
- Analog output voltage
- Ratiometric and fixed mode output
- 5V supply voltage
- High-speed sensing
- 250kHz bandwidth
- 3μs response time
- RoHS compliant package SIP4-VB (MSL-1)
MLX91241 Applications
- High Voltage Traction Motor Inverter
- 48V Boost Recuperation Inverter
- DCDC Converter
- Solar inverter
In a typical application, the sensor is placed in the air gap of a C-Core (ring-shaped soft ferromagnetic core) surrounding a bus bar or cable to concentrate flux and reject external magnetic field disturbances. The sensor transfer characteristic is factory-trimmed over temperature and end-of-line customer-programmable (offset and sensitivity) via a 1-pin protocol that can be implemented on any standard MCU without requiring a proprietary programmer.
MLX91241 Flexible end-of-line programming for efficient mass production
The Melexis MLX91241 combines high-speed current sensing with flexible end-of-line programmability and is specifically designed for current measurement in high-power electrification systems. With a bandwidth of 250 kHz and a response time of 3 µs, the Hall current sensor enables fast detection of dynamic current changes in demanding power-electronics applications. Offset and sensitivity can be programmed at the end of the production line through a 1-pin protocol. The protocol can be implemented using a standard microcontroller, eliminating the need for a proprietary programming device.
This simplifies integration into existing production and calibration processes while enabling the sensor to be adapted to specific system requirements. In a typical application, the MLX91241 is positioned in the air gap of a ferromagnetic C-core surrounding a bus bar or conductor. This configuration concentrates the magnetic flux at the sensing element while reducing the influence of external magnetic disturbances. The MLX91241 is therefore particularly suited to traction inverters, 48 V boost recuperation systems, DC/DC converters and solar inverters.
Do you need a reliable sensor? Please get in touch – we’d be happy to advise you:
DACOM West offers expert advice and fast delivery for Melexis sensor systems – tailored to your specific requirements.
