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AMIS-30522 - Micro-stepping Motor Driver

General Description

Table 2: Pin List and Description Name Pin Description DO 31 SPI data output VDD 32 Logic supply output (needs external decoupling capacitor) GND 1 Ground, heat sink DI 2 SPI data in www.DataSheet4U.com CLK 3 SPI clock input NXT 4 Next micro-step input DIR 5 Direction input ERRB 6 Error output SLA 7

Key Features

  • Dual H-Bridge for 2-phase stepper motors.
  • Programmable peak-current up to 1.6A 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.

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Datasheet Details

Part number AMIS-30522
Manufacturer AMI SEMICONDUCTOR
File Size 2.55 MB
Description Micro-stepping Motor Driver
Datasheet download datasheet AMIS-30522 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AMIS-30522 Micro-stepping Motor Driver Data Sheet 1.0 Introduction The AMIS-30522 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and a SPI interface with an external microcontroller. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral devices. AMIS-30522 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.