AMIS30532C5321RG

AMIS 系列 30 V 表面贴装 微型步进电机驱动器 NQFP-32

The AMIS-30532 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and an SPI interface with an external microcontroller. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral devices. The AMIS-30532 contains a current-translation table and takes the next micro-step depending on the clock signal on the NXT input pin and the status of the DIR =direction register or input pin. The chip provides a so-called speed and load angle output. This allows the creation of stall detection algorithms and control loops based on load-angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control. The AMIS-30532 is implemented in I2T100 technology, enabling both high-voltage analog circuitry and digital functionality on the same chip. The chip is fully compatible with the automotive voltage requirements. The AMIS-30532 is ideally suited for general-purpose stepper motor applications in the automotive, industrial, medical, and marine environment. With the on-chip voltage regulator it further reduces the BOM for mechatronic stepper applications.

Features

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Dual H-Bridge for 2-phase stepper motors

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Programmable peak-current up to 1.6 A continuous 3.0 A short time using a 5-bit current DAC

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On-chip current translator

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SPI interface

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Speed and load angle output

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Seven step modes from full-step up to 32 micro-steps

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Fully integrated current-sense

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PWM current control with automatic selection of fast and slow decay

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Low EMC PWM with selectable voltage slopes

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Active fly-back diodes

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Full output protection and diagnosis

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Thermal warning and shutdown

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Compatible with 5 V and 3.3 V microcontrollers

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Integrated 5 V regulator to supply external microcontroller

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Integrated reset function to reset external microcontroller

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Integrated Watchdog Function