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AMIS-30543

ON Semiconductor
Part Number AMIS-30543
Manufacturer ON Semiconductor
Description Micro-Stepping Motor Driver
Published Apr 1, 2020
Detailed Description AMIS-30543 Micro-Stepping Motor Driver Introduction The AMIS−30543 is a micro−stepping stepper motor driver for bipolar...
Datasheet PDF File AMIS-30543 PDF File

AMIS-30543
AMIS-30543

Overview
AMIS-30543 Micro-Stepping Motor Driver Introduction The AMIS−30543 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.
AMIS−30543 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−30543 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−30543 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.
Key Features • Dual H−Bridge for 2−Phase Stepper Motors • Programmable Peak−Current Up to 3 A • On−Chip Current Translator • SPI Interface • Speed and Load Angle Output • Eleven Step Modes from Full Step Up to 128 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 • These Devices are Pb−Free and are RoHS Compliant www.
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