BLDC motor driver with integrated Hall sensor and power MOSFETs
The MP6653A single-phase brushless dc (BLDC) motor driver from Monolithic Power Systems cuts board space by integrating power MOSFETs and an embedded Hall sensor in three compact package options.
Rated to handle coil current up to 1.2 A, the MP6653A offers a wide input voltage range from 3.5 V to 35 V, and the high- and low-side MOSFETs offer a combined on-resistance of 960 mΩ.
Motor speed can be controlled by the pulse-width modulation (PWM) signal or by the dc voltage applied on the PWM pin. Design flexibility is offered by the soft commutation, which is combined with a configurable Hall offset angle, in addition to a configurable speed curve.
The frequency generator and rotating detection pin is an open-drain output and configured to detect speed, or to detect rotor detection if the rotor is locked. The speed is detected based on the sensor output of the embedded Hall-effect sensor, and a locked rotor is detected if protection against a locked rotor is triggered.
Additional features offer over-voltage protection (OVP) on the input, in addition to under-voltage lockout (UVLO), over-current protection (OCP), as well as thermal shutdown, in addition to short-circuit protection.
The MP6653A, and the AEC-Q100-qualified MPQ6653A, offer space-saving TSOT23-6-SL and TSOT23-6-L packages, in addition to a wettable-flank TQFN-6 in a compact 2 mm x 3 mm footprint.