Single-Coil Fan and Pump Driver IC for Automotive Applications with Extended Lifetime

29 October 2021 - 0 Comments

Melexis has expanded its MLX90412 product offering with a new MLX90412GLW single-coil pump/fan IC which is optimized to operate at high junction temperatures up to 160°C and is qualified to meet operating lifetime demand up to 15,000 hours. This new IC with integrated driver stage drives 15W pumps up to 135°C in ICEs and 20W pumps up to 85°C in EVs. This IC can be configured in a range of BLDC commutation options from sinewave mode, offering the lowest noise performance ideal for EVs over a high torque mode. Moreover, it offers low EMI mode, for ON/OFF applications requiring minimum external EMI filter components.

The MLX90412GLW IC can operate basic two-wire pumps with ON/OFF functionality and variable speed pumps through a PWM interface with diagnostics feedback in a four-wire pump. This device with Hall sensor technology can operate supply range from 3.5 V to 32 V and is robust up to 40 V. Additionally, it features short circuit protection, fast prototyping, and end-of-line programming.

Features

All-in-one fan driver, including a motor controller, hall sensor and 0.35 Ohm driver
Up to 2.2 A motor current
Adaptive commutuation for best in class efficiency over the full speed range for any fan design
PWM control input
Operating supply range from 3.5 V to 32 V
Operating junction temperature from -40 to 160°C
AEC-Q100-Rev-H qualified packages