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AMIS-30522

AMI SEMICONDUCTOR
Part Number AMIS-30522
Manufacturer AMI SEMICONDUCTOR
Description Micro-stepping Motor Driver
Published Nov 4, 2009
Detailed Description AMIS-30522 Micro-stepping Motor Driver Data Sheet 1.0 Introduction The AMIS-30522 is a micro-stepping stepper motor dr...
Datasheet PDF File AMIS-30522 PDF File

AMIS-30522
AMIS-30522

Overview
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.
The AMIS-30522 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-30522 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.
2.
0 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 • Full output protection and diagnosis • Thermal warning and shutdown • Compatible with 5V and 3.
3V microcontrollers • Integrated 5V regulator to supply external microcontroller • Integrated reset function to reset external microcontroller www.
DataSheet4U.
com • Integrated watchdog function 3.
0 Ordering information T...


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