MP6652 BLDC Motor Drive

Product Highlights > MP6652 BLDC Motor Drive

            MP6652 BLDC Motor Drive
                    MPS’ MP6652 device controls the rotational speed via the pulse-width modulation (PWM) signal on the PWM pin
    

MPS’ MP6652 single-phase brushless DC (BLDC) motor driver features integrated power MOSFETs and a Hall effect sensor. It drives a single-phase BLDC fan motor with a 3 V to 18 V input voltage (V_IN) range.

This device controls the rotational speed via the pulse-width modulation (PWM) signal on the PWM pin. It also features a built-in, configurable speed curve function ideal for cooling fan applications requiring flexible speed curve control.

The MP6652 provides rotational speed detection. The rotational speed detector (the FG/RD pin) is an open-drain output. It outputs a high or low voltage relative to the internal Hall comparator’s output. Higher speeds produce higher frequency signals.

Full protection features include input overvoltage protection (OVP), undervoltage lockout (UVLO) protection, locked rotor protection, and thermal shutdown.

The MP6652 is available in TSOT23-6-SL and TSOT23-6-L packages.

Features

On-chip Hall sensor
Integrated power MOSFETs: Total 850 mΩ high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET)
Configurable starting duty cycle
Rotational speed indicator FG signal
Locked rotor protection fault indication

1 kHz to 100 kHz PWM input frequency range
27 kHz fixed output switching frequency (fSW)
Configurable soft-on/off commutation angle (max 90°)
Configurable soft start (SS)
FG outputs 0.5x, 1x, or 2x original Hall frequency

Applications

Cooling fans