极具性价比的步进电机驱动芯片-TMC2226/TMC2209使用小结

TMC2226和TMC2209是价格更低但功能强大的步进驱动芯片,与TMC5160相比,它们提供了单线UART配置接口,内置2.8A峰值电流,支持多种细分模式,且具有StallGuard4功能。虽然缺少内部加减速曲线,但通过UART动态配置仍能实现全功能,适用于3D打印和其他自动化设备。

TMC2226/2209相对于TMC2660C、TMC5160来说,价格低了很多,同时功能并没有太多阉割。

对比TMC5160,少了内部加减速曲线,电流足够(Ipeak = 2.8A),相对5160而言功能也很足够,所以毫无疑问TMC2226是极具性价比的步进驱动芯片。

让我们一起看看TMC2226/TMC2209的一些特点:

1、配置接口使用单线UART

2、内部提供步进脉冲发生器,但是没有速度斜坡功能 ,约等于≈无用

3、基于较稳定的附带温度补偿的低MOS管导通电阻,提供了免外部采样电阻功能

4、所谓的OTP - Configuration Memory,OTP_PROG 编程用寄存器,保存一些需要断电存储的信息。某些参数的缺省值取决于OTP的设置。

5、内置MOS提供2.8A峰值电流

6、StallGuard4而不是StallGuard2

7、可uart配置最高256细分,但是硬件针脚的配置只能8,16,32,64四种

8、SPREAD引脚选择斩波方式,并且只有两种斩波,去掉了恒定关断时间斩波

9、STDBY24DI 低功耗切换引脚

10、提供额外的VREF参考电压输入,更灵活的电流配置

11、与5160一样的飞轮模式

12、全保护与诊断、热优化HTSSOP封装

控制模式:

1、传统模式,独立模式,脉冲方向控制

全部使用硬件作为控制或者交互,VREF用以调节电流

ATIONS Compatible Design Upgrade 3D Printers Printers, POS Office and home automation Textile, Sewing Machines CCTV, Security ATM, Cash recycler HVAC Battery Operated Equipment FEATURES AND BENEFITS 2-phase stepper motors up to 2.8A coil current (peak), 2A RMS STEP/DIR Interface with 4, 8, 16 or 32 microstep pin setting Smooth Running 256 microsteps by MicroPlyer™ interpolation StealthChop2™ silent motor operation SpreadCycle™ highly dynamic motor control chopper StallGuard4™ load and stall detection for StealthChop CoolStep™ current control for energy savings up to 75% Low RDSon, Low Heat-Up LS 170mΩ & HS 170mΩ (typ. at 25°C) Voltage Range 4.75… 28V DC Low Power Standby to fit EUP or for battery operation Internal Sense Resistor option (no sense resistors required) Passive Braking, Freewheeling, and automatic power down Single Wire UART & OTP for advanced configuration options Integrated Pulse Generator for standalone motion Full Protection & Diagnostics Choice of QFN and HTSSOP package for best fit DESCRIPTION The TMC2209 and TMC2226 are ultra-silent motor driver ICs for two phase stepper motors. TMC2209 pinning is compatible to a number of legacy drivers as well as to the TMC2208. TRINAMICs sophisticated StealthChop2 chopper ensures noiseless operation, maximum efficiency and best motor torque. Its fast current regulation and optional combination with SpreadCycle allow highly dynamic motion while adding. StallGuard for sensorless homing. The integrated power MOSFETs handle motor currents up to 2A RMS with protection and diagnostic features for robust and reliable operation. A simple to use UART interface opens up tuning and control options. Store application tuning to OTP memory. Industries’ most advanced STEP/DIR stepper motor driver family upgrades designs to noiseless and most precise operation for cost-effective and highly competitive solutions. Step/Dir Drivers for Two-Phase Bipolar Stepper Motors up to 2.8A peak – StealthChop™ for Quiet Movement – UART Interface Option – Sensorless Stall
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