DESCRIPTION

The MP6546 is a 3-phase brushless DC (BLDC)

motor driver for gimbal applications. It has three

half-bridge power stages, pre-drivers, fieldoriented control (FOC) logic, and angle

calculations. The MP6546 supports linear Hall

angle inputs or an MPS magnetic angle sensor

input. The MP6546 supports multi-slave mode

and allows three-axis gimbals to be connected to

a single I2C interface to reduce the

microcontroller (MCU) load and system cost.

The MP6546 can deliver up to 3A of peak current.

It uses an internal charge pump to generate the

gate drive supply voltage for the high-side

MOSFETs (HS-FETs).

Internal safety features include thermal

shutdown, under-voltage lockout (UVLO), overcurrent protection (OCP), short-circuit protection

(SCP), and over-voltage protection (OVP).

The MP6546 is available in a QFN-20

(3mmx4mm) package with an exposed thermal

pad.

FEATURES

• 3.5V to 22V Operating Supply Voltage

• Three Half-Bridge Drivers

• Up to 1MHz Fast-Mode Plus for I

2C

• Configurable Slave Addresses

• Supports Different Angle Sensor Inputs:

o Linear Hall Sensor Input through HA/HB

o Magnetic Angle Sensor through

SPI/SSC Interface

• Integrated 12-Bit Analog-to-Digital

Converter (ADC) for Hall Sensor

• D-Axis and Q-Axis Voltage Loop with FieldOriented Control (FOC)

• Standby Mode to Save Quiescent Current

• Under-Voltage Lockout (UVLO), Thermal

Shutdown (TSD), Over-Current Protection

(OCP), Short-Circuit Protection (SCP), and

Over-Voltage Protection (OVP)

• One-Time Programmable (OTP) Memory

• Available in a QFN-20 (3mmx4mm)

Package

APPLICATIONS

• Gimbals

• Three-Phase Brushless DC (BLDC) Motors