MP6520

8V to 32V, 1.5A, Stepper Motor Driver

with Integrated MOSFETs

MP6520 Rev. 1.0

www.MonolithicPower.com

1

10/10/2016

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2016 MPS. All Rights Reserved.

DESCRIPTION

The MP6520 is a stepper motor driver with a

built-in microstepping translator. The MP6520

operates from a supply voltage of up to 32V

and can deliver a motor current of up to 1.5A.

The MP6520 can operate a bipolar stepper

motor in full-, half-, quarter-, and eighth-step

modes.

The MP6520 has a fixed 3.3V reference output,

which allows it to operate without a separate

logic power supply.

Full protection features include over-current

protection (OCP), input over-voltage protection

(OVP), under-voltage lockout (UVLO), and

thermal shutdown.

The

MP6520

is

available

in

a

QFN-28

(4mmx5mm) package with an exposed thermal

pad.

FEATURES

 Wide 8V to 32V Input Voltage Range

 Two Internal Full-Bridge Drivers

 Low On Resistance (HS: 300mΩ; LS:

300m

Ω)

 No Control Power Supply Required

 Simple Logic Interface

 Compatible with 3.3V and 5V Logic

 Full-, Half-, Quarter-, and Eighth-Step

Functionality

 1.5A Maximum Output Current

 Adjustable Mixed Decay Ratio

 Over-Current Protection (OCP)

 Input Over-Voltage Protection (OVP)

Function

 Thermal Shutdown and Under-Voltage

Lockout (UVLO) Protection



Fault Indication Output

 Available in a QFN-28 (4mmx5mm)

Package

APPLICATIONS

 Bipolar Stepper Motors

 Printers

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” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

Motor

CPA

CPB

VCP

VIN

AOUT1

AOUT2

BOUT1

BOUT2

ROSC

VREF

MDS

STEP

DIR

MS1

MS2

nENBL

nSLEEP

3P3VOUT

nFAULT

nHOME

µC

SENA

3.3V

VIN

MP6520

SENB

nRSET

0.47uF

200k

Ω

VG

1uF

1uF

100nF

SENA

SENB

Exposed

GND PAD

GND