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See Technical Specifications

NCV70521

onsemi SPI STEPPER DRIVER

Manufacturer:

onsemi
Mfr.Part #:

NCV70521
Datasheet:

NCV70521 Datasheet (PDF)
Package/Case:

NQFP-32
EDA/CAD Models:

Request Free CAD Models for NCV70521

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NCV70521 General Description

IntroductionThe 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.Features• Dual H−Bridge for 2 Phase Stepper Motors• Programmable Peak−Current Up to 1.2 A Continuous (1.5 A Short Time), Using a 5−Bit Current DAC• On−Chip Current Translator• SPI Interface• Speed and Load−Angle Output• 7 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 Flyback Diodes• Full Output Protection and Diagnosis• Thermal Warning and Shutdown• Digital IO’s Compatible with 5 V and 3.3 V Microcontrollers• NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes• These are Pb−Free Devices*