Datasheet

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TMC239A-SA 4A driver for external MOSFETs SO28

TMC239A-LA 4A driver for external MOSFETs QFN32

TMC239-EVAL evaluation board

Integrated Circuits

Motion Controllers for Stepper Motors

For further detailed information and datasheets please refer to our website http://www.trinamic.com.

The TMC239 is a smart high current microstepping driver for bipolar stepper motors. It

provides an SPI™ interface as well as the classical analog / digital control. A full set of

protection and diagnostic features makes this device very rugged. It directly drives ex-

ternal MOSFETs for currents of up to 4A . (A list of compatible power MOSFETs is given

within the datasheet.) This way it reaches an extremely high efﬁ ciency and allows driving

of a high motor current without cooling measures even at high environment temperatures.

With the new chip-scale QFN package a 4A motor driver can be realized on the size of a

stamp!

The high motor current makes this device ideal for miniaturized highly dynamic and high

torque drive systems.

Electrical data

 up to 4000 mA coil current (peak) with

just 8 external MOSFETS

 7V to 34V motor supply (TMC239A),

up to 60V using a few add. components

 higher current / voltage using additional

gate drivers

 3.3V or 5V operation for digital part

Main characteristics

 full protection and diagnostics

 low power dissipation

 16 times microstepping via SPI,

64 times using additional shift register,

even more via analog control

 mixed decay for smooth operation

 programmable slope control for low EME

 internal or external chopper clock

 standby and shutdown mode

Interface

 easy-to-use SPI™ interface

 classical analog interface

Package

 standard SO28 package

 chip size QFN32 package

 RoHS compliant

Microstep Driver for External FETs for up to 4A Phase Current

TMC 239

TMC239

3.3 / 5V DC

7..34V DC

IN A

IN B

ERROR

SPI

C/CLK

Temp / Volt

protection

4 bit

DACs

OSC

Control

Diagnostics

PWM control

Gate Driver

Coil A

external

Driver

Stage

external

Driver

Stage

Current

monitoring

PWM control

Gate Driver

Coil B

Step

Motor

Summary of content (1 pages)

PAGE 1
Integrated Circuits Motion Controllers for Stepper Motors TMC 239 Microstep Driver for External FETs for up to 4A Phase Current The TMC239 is a smart high current microstepping driver for bipolar stepper motors. It provides an SPI™ interface as well as the classical analog / digital control. A full set of protection and diagnostic features makes this device very rugged. It directly drives external MOSFETs for currents of up to 4A . (A list of compatible power MOSFETs is given within the datasheet.