TMC261A-PA

简介

The TMC261 is the first energy efficient high current high precision microstepping driver IC for bipolar stepper motors. The unique high resolution sensorless load detection StallGuard2™ is used to for the world’s first integrated load dependent current control feature called CoolStep™. The ability to read out the load and detect an overload makes TMC261 an optimum choice for drives where a high reliability is desired at a low cost. The new patented spreadCycle PWM mixed decay chopper scheme ensures best zero crossing performance as well as high speed operation. TMC261 can be driven with Step & Direction signals as well as by serial SPI interface. Using the microPlyer allows to operate the motor with highest 256 µStep smoothness reducing the input frequency to 16 µSteps. A full set of protection and diagnostic features makes this device very rugged. It directly drives stepper motors with up to 2A. This way it reaches highest energy efficiency and allows driving of a high motor current without cooling measures even at high environment temperatures.Special FeaturesStallGuard2™CoolStep™SpreadCycle™

主要参数

Axes	1
Motor Supply	9…60V
Microsteps	1…256
SPI	Yes
Step/Dir	Yes
StallGuard2™	Yes
CoolStep™	Yes
SpreadCycle™	Yes
Phase Current, RMS	1.4A
Package	LQFP44 (10x10)
StallGuard2™（无传感器失速检测和机械负载测量）	Yes
CoolStep™（电流节能控制）	Yes
SpreadCycle™（高精度斩波算法）	Yes
产品状态	量产

产品说明与原始资料

TMC261A-PA

简介

TMC261是第一款用于双极步进电机的高能效大电流高精度微步进驱动芯片。独特的高分辨率无传感器负载检测系统 StallGuard2™（无传感器失速检测和机械负载测量） 是用来为世界上第一个集成负载依赖电流控制功能称为CoolStep™（电流节能控制）. 读取负载和检测过载的能力使TMC261成为以低成本要求高可靠性的驱动器的最佳选择。新的专利展宽周期PWM混合衰变斩波器方案确保最佳的过零性能以及高速运行。TMC261可以通过步进和方向信号以及串行SPI接口驱动。使用微锁相环可以使电机以最高256µ步的平滑度运行，从而将输入频率降低到16µ步。全套保护和诊断功能使该设备非常坚固。它直接驱动高达2A的步进电机，这样可以达到最高的能源效率，即使在高环境下也可以驱动高电流的电机，而无需冷却措施温度。

关键技术：MicroPlyer™（微步插值器） StallGuard2™（无传感器失速检测和机械负载测量） CoolStep™（电流节能控制） SpreadCycle™（高精度斩波算法）

主要参数

Axes	1
Motor Supply	9…60V
Microsteps	1…256
SPI	Yes
Step/Dir	Yes
StallGuard2™（无传感器失速检测和机械负载测量）	Yes
CoolStep™（电流节能控制）	Yes
SpreadCycle™（高精度斩波算法）	Yes
Phase Current, RMS	1.4A
Package	LQFP44 (10x10)
产品状态	量产

原理图/引脚

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产品规格书

1. TMC261 Datasheet

用户手册

1. Power dissipation calculation
2. Getting started

产品应用笔记

1. Application Note 016 - TMC429 TMC26x Getting Started: Motion Control via S/D
2. Application Note 040 - Understanding EMC TMC260, TMC261, TMC2660
3. Application Note 044 - Replacing the TMC236/TMC246 by the TMC260 or TMC261
4. Application Note 005d - LQFP44

质量声明

1. Statement concerning RoHS compliance of TMC261

产品变更声明

1. PCN 2019-08-04 TMC261-PA

原理图 / 引脚

资料下载