MP6546

22V, 3A, Peak, 3-Phase BLDC Driver

with 1MHz I2C Interface

MP6546 Rev. 1.0

MonolithicPower.com

1

3/20/2023

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© 2023 MPS. All Rights Reserved.

DESCRIPTION

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

motor driver for gimbal applications. It has three

half-bridge power stages, pre-drivers, field-

oriented

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), over-

current 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 I2C

• 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 Field-

Oriented 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

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.

For MPS green status, please visit the MPS website under Quality

Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are

trademarks of Monolithic Power Systems, Inc. or its subsidiaries.