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| Motion Control Integrated Circuit TMC 249 g g g g g TRINAMIC IM I C R O C H I P S I G M B H Features Drives 2-phase stepper motors Integrated load measurment allows sensorless stall detection (Pat. Fi.)StallGuardTM Up to 10A and 75V with external circuitry 7V to 28.5V motor supply voltage Low power dissipation via external low RDS-ON power stage 4 bit DACs allow up to 16 times -stepping via SPI, higher resolution via analog control Control via SPI with easy to use 12 bit protocol or external analog / digital signals Status Flags for short circuit,open load, over temperature, temperature pre-warning, undervoltage Short circuit, over temperature, over voltage protection integrated Internal open load detector Mixed decay feature for smooth motor operation 3.3V or 5V operation for digital part Current control allows cool motor and driver operation Standby and shutdown mode available Slope control user programmable to reduce electromagnetic emissions Chopper frequency programmable via single capacitor or external clock Only 4 external PMOS transistors required for unipolar operation TMC249 Application Environment High Current Microstep Stepper Motor Driver with Sensorless Stall Detection,Protection / Diagnosis and SPI Interface The TMC249 is a dual full bridge driver IC for bipolar stepper motor control applications. The TMC249 is realized in a HVCMOS technology and directly drives eight external Low-RDS-ON high efficiency MOSFETs. It supports up to 4000mA coil current. With additional drivers, motor current and voltage can be increased. The driver transistors can be chosen depending on output current or environment temperature. The integrated unique sensorless stall detection (pat.fi.) StallGuardTM makes it a good choice for applications, where a reference point is needed, but where a switch is not desired. Its ability to predict an overload makes the TMC249 an optimum choice for drives, where a high reliability is desired. Internal DACs allow microstepping as well as smart current control. The device can be controlled by a serial interface (SPITM) or by analog / digital input signals. Short circuit, temperature, undervoltage and overvoltage protection are integrated. SPITM is a trademark of Motorola,Inc. g g g g g g g TMC249 Block Diagram g g g g g DEELBOEGENKAMP 4C 22297 HAMBURG GERMANY TEL +49 (0)40 - 51 48 06 0 FAX +49 (0)40 - 51 48 06 60 TRINAMICINORTHIAMERICA,IINC.I4011N.MICHIGANIAVE.ISUITE125251CHICAGO,IILLINOISI60611I TEL: 1-866-TRINAMIC WWW.TRINAMIC.COM Motion Control Integrated TMC Circuit Motion Control Integrated Circuit 249 TMC249 2-phase bipolar stepper motors depends on external transistors 4-bit DACs allow 16-64 x -stepping -40C to + 140C 7 V to 30V 3V to 5.5V SPI / external analog current 12 bit 4 bit / linear typ. 0.8mA typ. 28A freely programmable:50ns - 500ns SO28 available TRINAMIC MICROCHIPSIGMBH Technical Specifications Product Name Motors Controlled Motor Current -Step Resolution Temperature Range Motor Supply Voltage Digital Operating Voltage Inputs SPI Datagram Length Internal DAC Resolution Supply Current Digital Shutdown Current Output Slope Control Available Packages Evaluation Kit TMC 249 SO28 Pinout TMC 249 SO28 Dimensional Specifications TMC249 Stall Detection Ramp Ordering Information ORDER CODE TMC249-A TMC249-EVAL DESCRIPTION TMC249-SO28 TMC249 Evaluation Kit DEELBOEGENKAMP 4C 22297 HAMBURG GERMANY TEL +49 (0)40 - 51 48 06 0 FAX +49 (0)40 - 51 48 06 60 TRINAMICINORTHIAMERICA,IINC.I4011N.MICHIGANIAVE.ISUITE125251CHICAGO,IILLINOISI60611I TEL: 1-866-TRINAMIC WWW .TRINAMIC.COM |
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