微步进电机驱动器

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AMIS-30532 是一款微步步进电机驱动器,适合双极步进电机。该芯片通过 IO 引脚和 SPI 接口与外部微处理器进行联接。它具有片上稳压器、重置输出和监控重置,能够为外围设备供电。AMIS-30532 包含一个电流转换表,根据 NXT 输入引脚上的时钟信号以及 DIR(方向)寄存器或输入引脚的状态采用下一个微步进。芯片提供所谓速度和负载角度输出。因此可以基于负载角度创建失速检测算法和控制环路,来调整扭矩和速度。它使用专属的 PWM 算法实现可靠的电流控制。AMIS-30532 采用 I2T100 技术,在同一芯片上同时实现了高压模拟电路和数字功能。芯片可完全兼容汽车电压要求。The AMIS-30532 非常适合汽车、工业、医疗和海洋环境中的通用步进电机应用。借助片上稳压器,它进一步减少了机械电子步进应用的 BOM。

  • Dual H-Bridge for 2-phase stepper motors
  • Programmable peak-current up to 1.6 A continuous (3.0 A short time) using a 5-bit current DAC
  • On-chip current translator
  • SPI interface
  • Speed and load angle output
  • Seven step modes from full-step up to 32 micro-steps
  • Fully integrated current-sense
  • PWM current control with automatic selection of fast and slow decay
  • Low EMC PWM with selectable voltage slopes
  • Active fly-back diodes
  • Full output protection and diagnosis
  • Thermal warning and shutdown
  • Compatible with 5 V and 3.3 V microcontrollers
  • Integrated 5 V regulator to supply external microcontroller
  • Integrated reset function to reset external microcontroller
  • Integrated Watchdog Function

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AMIS30532C5321RG

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Pb

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H

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NQFP-32

3

260

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2500

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6

40

4.5

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1/32

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