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AMIS-30512

ON Semiconductor
Part Number AMIS-30512
Manufacturer ON Semiconductor
Description Micro-Stepping Motor Driver
Published Nov 4, 2009
Detailed Description AMIS-30512 Micro-Stepping Motor Driver Introduction The AMIS−30512 is a micro−stepping stepper motor driver for bipolar...
Datasheet PDF File AMIS-30512 PDF File

AMIS-30512
AMIS-30512

Overview
AMIS-30512 Micro-Stepping Motor Driver Introduction The AMIS−30512 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.
The AMIS−30512 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−30512 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−30512 is ideally suited for general−purpose stepper motor applications in the automotive, industrial, medical, and marine environment.
Key Features http://onsemi.
com PIN ASSIGNMENT DO VDD GND DI CLK NXT DIR ERR SLA CPN CPP VCP TSTO POR/WD VBB MOTXP GND MOTXN MOTYN GND MOTYP VBB CS CLR AMIS30512 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 www.
DataSheet4U.
com • 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 3.
3 V Microcontrollers, 5 V Tolerant Inputs • Integrated 5 V Regulator to Supply External Microcontroller • Integrated Reset Function to Reset External Microcontroller • Integrated Watchdog Function • Dual H−Bridge for 2−phase Stepper Motors • Programmable Peak−current up to 80...


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