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AMIS-30521

ON Semiconductor
Part Number AMIS-30521
Manufacturer ON Semiconductor
Description Micro-Stepping Motor Driver
Published Nov 4, 2009
Detailed Description AMIS-30521, NCV70521 Micro-Stepping Motor Driver Introduction The AMIS−30521/NCV70521 is a micro−stepping stepper motor...
Datasheet PDF File AMIS-30521 PDF File

AMIS-30521
AMIS-30521

Overview
AMIS-30521, NCV70521 Micro-Stepping Motor Driver Introduction The AMIS−30521/NCV70521 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.
The AMIS−30521/NCV70521 contains a current−translation table.
It 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−30521/NCV70521 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 521 is ideally suited for general purp...


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