DESCRIPTION

The MPQ6631H is a three-phase, brushless DC

(BLDC) motor driver with integrated power

MOSFETs. The device supports a single

external Hall sensor or three external Hall-effect

sensors to drive a three-phase BLDC motor,

with up to 3A of peak phase current and an

input voltage (VIN) range between 3.6V and 35V.

The MPQ6631H controls the motor speed

through the pulse-width modulation (PWM)

signal or the DC signal on the PWM/DC pin with

closed-/open-loop control. The device features

a built-in, configurable speed curve function. It

also features a sinusoidal drive for maximum

torque, as well as low speed ripple and noise

across the full speed range.

The MPQ6631H 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 Hall

comparator’s output. Direction control is

achieved via the DIR pin’s input.

Rich protection features include input overvoltage protection (OVP), under-voltage lockout

(UVLO), locked-rotor protection, over-current

protection (OCP), and thermal shutdown

protection.

The MPQ6631H is available in a TQFN-26

(3mmx4mm) package with wettable flanks. It is

available in AEC-Q100 Grade 1.

FEATURES

• 3.6V to 35V Operating Input Voltage (VIN)

Range

• Up to 3A of Peak Phase Current

• Integrated 160mΩ High-Side MOSFETs

(HS-FETs) and Low-Side MOSFETs (LSFETs)

• Sinusoidal Drive

• Supports a 0V to 1.2V DC Input or 1kHz to

100kHz Pulse-Width Modulation (PWM)

Input

• Supports Triple-Hall or Single-Hall Inputs

• Closed-/Open-Loop Speed Control

• Direction/Brake Input

• Power-Save Mode

• 0.5s/4.5s Lock Protection

• Over-Current Protection (OCP)

• Single-Pulse or Triple-Pulse FG Output per

Electrical Cycle

• FG Signal: Rotational Speed Indication

• Soft Start (SS) for Low Noise and Current

Overshoot

• Available in a TQFN-26 (3mmx4mm)

Package with Wettable Flanks

• Available in AEC-Q100 Grade 1

APPLICATIONS

• Fans

• Automotive Fans

• General Three-Phase Brushless DC (BLDC)

Motors

• Pumps