POWER DRIVER FOR STEPPER MOTORS INTEGRATED CIRCUITS TMC249A DATASHEET SPI or Classic Analog Interface Stepper Driver for Two-Phase Bipolar Motors with sta l l Gua rd. External MOSFETs fit different motor sizes. Full set of protection & diagnostics. APPLICATIONS Textile, Sewing Machines Office Automation Printer and Scanner Heliostat Controller ATM, Cash recycler POS CCTV, Security Antenna Positioning Pumps and Valves Lab Automation Liquid Handling Medical FEATURES AND BENEFITS DESCRIPTION High Current up to 7 A RMS using 4 Dual-MOS transistors. The TMC249 driver for two-phase stepper Voltage Range 7 V 36 V DC motors offers a competitive feature set, 3.3 V or 5 V DC for digital part including 64x micro-stepping, sensorless mechanical load measurement with stall SPI & External Analogue / Digital Signals detection, and smart current control. Microstep Resolution up to 64 microsteps per full step Standard SPI and communication via Low Power Dissipation via low RDS-ON power stage external analog / digital signals are available. The TMC249 drives eight external Protection: overvoltage, overtemperature & short circuit Low-RDS-ON high efficiency MOSFETs for Diagnostics: overcurrent, open load, 2 level overtemperature motor currents up to 7A and up to 36V. stallGuard sensorless stall detection and load measurement Integrated protection and diagnostic Mixed Decay for smooth motor operation features support robust and reliable operation. High integration and small form Slope Control for reduced electromagnetic emissions factor enable miniaturized designs with Current Control for cool motor and driver low external component count for cost- Standby and Shutdown Mode effective and highly competitive solutions. Choice of Package 7x7mm QFN32 package or SO28 BLOCK DIAGRAM TRINAMIC Motion Control GmbH & Co. KG Hamburg, Germany TMC249A DATASHEET (Rev. 2.20 / 2019-AUG-21) 2 APPLICATION EXAMPLES: HIGH POWER SMALL SIZE The TMC249 scores with its high power density and a versatility that covers a wide spectrum of applications and motor sizes, all while keeping costs down. APPLICATION EXAMPLES COMPACT DESIGN FOR UP TO 3 MOTORS USING SPI INTERFACE OFFLOAD THE MOTION CONTROL FUNCTION TO TRINAMICS TMC429. GET A COMPETITIVE DESIGN FOR MULTIPLE MOTORS By offloading the motion-control function to the TMC429, up to three motors can be operated reliably with very little demand for service from the microcontroller. Motor 1 MOSFET TMC429 SPI SPI High level C Motion TMC249 Driver M interface Controller Stage Motor 2 MOSFET TMC249 Driver M Stage Motor 3 MOSFET TMC249 Driver M Stage MINIATURIZED DESIGN WITH SIMPLE DIGITAL DRIVER CONTROL BENEFIT FROM A LARGE CURRENT CONTROL RANGE VIA ANALOG INPUTS The TMC249 is controlled via SPI bus. The microcontroller initializes the chip and writes control parameters, mode bits, and values for coil currents in the driver chip. Analog A/B inputs allow for a large current control range. SPI MOSFET High level C TMC249 Driver M interface Analog Stage Inputs A/B MINIATURIZED DESIGN FOR STANDALONE MODE REPLACE BIPOLAR DRIVER BY A MODERN CMOS DRIVER. USE NEW HARDWARE AND KEEP YOUR SOFTWARE INVEST The TMC249 is controlled by analog current control signals and digital phase signals. Especially for lower speeds inimitable smoothness will be achieved with TRINAMICs low noise chopper. Analog Inputs A/B MOSFET High level C TMC249 Driver M interface Stage Polarity A/B Error TMC429+24X-EVAL EVALUATION & DEVELOPMENT PLATFORM This evaluation board is a development platform for applications based on the TMC249. The board features USB interface for communication with control software running on a PC. External power MOSFETs support drive currents up to 3.5A at 24 V. The control software provides a user- friendly GUI for setting control parameters and visualizing the dynamic response of the motor. ORDER CODES Order code Size Order code Description 2 TMC249A-LA 00-0063 7 A stepper driver for external MOSFETs, QFN32 7 x 7 mm 2 TMC249A-SA 00-0015 7 A stepper driver for external MOSFETs, SO28 10 x 18 mm www.trinamic.com