POWER DRIVER FOR STEPPER MOTORS INTEGRATED CIRCUITS TMC2041 DATASHEET Dual step/direction driver for up to two 2-phase bipolar stepper motors. stallGuard for sensorless homing. SPI, UART (single wire) Configuration and Diagnostics Interface. APPLICATIONS Office Automation Antenna Positioning 3D printers Battery powered applications Printer and Scanner Pumps and Valves Medical Applications Office and Laboratory equipment FEATURES AND BENEFITS DESCRIPTION Two 2-phase stepper motors The TMC2041 is a compact, dual stepper motor driver IC with serial interfaces for Drive Capability up to 2x 1.1A coil current (2x 1.5A peak) configuration and diagnostics. It is pin Parallel Option for one motor at 2.2A (3A peak) compatible to the fully featured TMC5041 Voltage Range 4.75 26V DC and TMC5072 drivers with internal mo- SPI & Single Wire UART for configuration and diagnostics tion controller. The TMC2041 is intended Highest Resolution up to 256 microsteps per full step for all applications, where an internal microPlyer microstep interpolation motion controller is not desired, and spr eadCyc l e highly dynamic motor control chopper ramping is done in a microcontroller. stal l Gu ar d2 high precision sensorless motor load detection Based on TRINAMICs high-performance spreadCycle chopper, the driver allows c ool Step current control for energy savings up to 75% precise and smooth motor operation. It Full Protection & Diagnostics offers coolStep for energy savings and 2 Compact Size 7x7mm QFN48 package stallGuard for sensorless stall detection. The complete set of protection and diagnostic functionality ensures reliable operation. High integration, high energy efficiency and a small form factor enable miniaturized and scalable systems for cost effective solutions. BLOCK DIAGRAM Step/Dir Power TMC2041 Supply Motor 1 Charge 256 Step Pump Sequencer DRIVER 1 Protection UART / SPI & Diagnostics SPI configuration& UART diagnostics Protection Motor 2 & Diagnostics DRIVER 2 256 Step Sequencer stallGuard2 coolStep Enable Step/Dir TRINAMIC Motion Control GmbH & Co. KG Hamburg, Germany TMC2041 DATASHEET (Rev. 1.02 / 2017-MAY-16) 2 APPLICATION EXAMPLES: HIGH FLEXIBILITY MULTIPURPOSE USE The TMC2041 scores with power density and sensorless homing. It features serial interfaces for advanced monitoring and configuration options. The small form factor keeps costs down and allows for miniaturized layouts. Extensive support at the chip, board, and software levels enables rapid design cycles and fast time- to-market with competitive products. High energy efficiency and reliability deliver cost savings in related systems such as power supplies and cooling. STEP/DIR FOR UP TO TWO STEPPER MOTORS The stepper motor driver outputs are switched in Step/Dir parallel. This way, up to M SPI or UART High-Level 2.2A RMS motors can be CPU TMC2041 Interface driven. STEP/DIR FOR UP TO TWO STEPPER MOTORS In this application, a single CPU controls two motors using a Step and Direction interface per motor. It Step/Dir initially configures the M SPI or UART drivers by programming High-Level CPU TMC2041 Interface current settings and Step/Dir M chopper, and run and hold current using either the 4 wire SPI interface, or the single wire UART interface. During operation the interface allows access to status information like stallGuard sensorless load measurement. TMC2041-EVAL EVALUATION BOARD EVALUATION & DEVELOPMENT PLATFORM The TMC2041-EVAL is part of TRINAMICs universal evaluation board system which provides a convenient handling of the hardware as well as a user-friendly software tool for evaluation. The TMC2041 evaluation board system consists of three parts: STARTRAMPE (base board), ESELSBRCKE (connector board including several test points), and Layout for Evaluation TMC2041-EVAL. ORDER CODES 2 Size mm Order code Description TMC2041-LA Dual axis step/dir driver, QFN-48 7 x 7 TMC2041-EVAL Evaluation board for TMC2041 85 x 55 STARTRAMPE Baseboard for TMC2041-EVAL and further evaluation boards 85 x 55 ESELSBRCKE Connector board for plug-in evaluation board system 61 x 38 www.trinamic.com