POWER DR I V E R F O R S T E P P E R M O T O R S I N T E G R A T E D C I R C U ITS TMC 2 39 Micr oste p Dr iver f or E xter nal MOSF ETs fo r up to 4A M A IN CH A R AC T ER IS T IC S INFO The TMC239 is a smart high current microstepping driver for • full protection and diagnostics bipolar stepper motors. It provides an SPI™ interface as well as • low power dissipation the classical analog / digital control. A full set of protection and • 16 times microstepping via SPI, 64 times using additional shift register, even more via analog control diagnostic features makes this device very rugged. It directly drives external MOSFETs for currents of up to 4A. (A list of • mixed decay for smooth operation compatible power MOSFETs is given within the datasheet.) This • programmable slope control for low EME way it reaches an extremely high efficiency and allows driving • internal or external chopper clock of a high motor current without cooling measures even at high • standby and shutdown mode environment temperatures. With the new chip-scale QFN packINTERFACE age a 4A motor driver can be realized on the size of a stamp! • classical analog interface The high motor current makes this device ideal for miniaturized ELECTRICAL DATA highly dynamic and high torque drive systems. • easy-to-use SPI™ interface The evaluation can be done with the TMC249 as the only differ- • up to 4000 mA coil current (peak) with just 4 external dual MOSFETS • 7V to 34V motor supply (TMC239A), up to 60V using a few add. components ence is the additional stallGuard™ feature. • higher current / voltage using additional gate drivers • 3.3V or 5V operation for digital part PACKAGE • standard SO28 package • chip size QFN32 package • RoHS compliant C/CLK IN A IN B TMC239 OSC 2x 4 bit DACs SPI PWM control & Gate Driver Coil A Control & Diagnostics 7..34V DC Step Motor 10 mm PWM control & Gate Driver ERROR 3.3 / 5V DC Current monitoring Temp / Volt protection Coil B OR DE R C O DE D E S C RI P T I ON TMC239A-SA 4A driver for external MOSFETs, SO28 TMC239A-LA 4A driver for external MOSFETs, QFN32 Related product: TMC32NP, TMC32NP2, TMC34NP TMC428A-EVAL Evaluation board for TMC428, TMC246A and TMC249A with stallGuard™ www.trinamic.com – for detailed information and datasheets 13