2.2 Amp rated single coil fan and pump driver chip for home appliances

Melexis announces new single coil fan and pump driver chip MLX90412 which can drive currents up to 2.2 A with maximum power rating of 35 W for applications such home appliances and industrial electronics. Complementing Melexis' MLX90411, the MLX90412 can operate from a voltage range of 3.5-32 V and can even withstand well up to 40 V, making it a good choice for 12 V and 24 V power supplies. It is also suitable for portable applications with up to seven Li-ion cells (~29 V). Some of the typical suggested examples include drain pumps for washing machines and dish washers, as well as toilet pumps; fans, blowers and cross blowers in air conditioning units, desk fans and pedestal fans; and Li-ion based applications including robot cleaners and robot lawn mowers. High torque with low acoustic noise, and low vibration of motors can be taken care by choosing the option of multiple motor commutation. High efficiency is achieved by having low reverse current throughout the full speed range of the motor and without dependent on motor inductance or applied lead angle. Other features as disclosed by Melexis includes: Both open loop and closed loop speed control are possible, with a wide range of dynamic (PI) settings, for a speed range up to 45,000 e-rpm (electrical RPM). The closed loop speed control allows the speed tolerance to be reduced to as low as +/- 3%. In combination...