Motor Drivers, Stepper | NCV70517

Micro-stepping Motor Driver

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Overview

The NCV70517 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. The NCV70517 contains a current−translation table and takes the next micro−step depending onthe clock signal on the “NXT” input pin and the status of the “DIR” (= direction) register or input pin. The chip provides an error message if an electrical error, an under−voltage or an elevated junction temperature is detected. It is using a proprietary PWM algorithm for reliable current control.NCV70517 is fully compatible with the automotive voltage requirements and is ideally suited for general−purpose stepper motor applications in the automotive, industrial, medical, and marineenvironment.Due to the technology, the device is especially suited for usein applications with fluctuating battery supplies.

  • Small Positioning Applications
  • Automotive (headlamp alignment, HVAC, idle control, cruise control)
  • Industrial Equipment (lighting, fluid control, labeling, process control, XYZ tables, robots)
  • Building Automation (HVAC, surveillance, satellite dish, renewable energy systems)
  • Dual H−bridge for 2−phase Stepper Motors
  • Programmable Peak−current up to 800 mA
  • Low Temperature Boost Current up to 1100 mA
  • On−chip Current Translator
  • SPI Interface
  • 5 Step Modes from Full−step up to 16 Micro−steps
  • Fully Integrated Current−sensing and Current−regulation
  • Back−EMF Measurement
  • On Chip Stall Detection
  • PWM Current Control with Automatic Selection of Fast and SlowDecay
  • Fixed PWM Frequency
  • Active Fly−back Diodes
  • Full Output Protection and Diagnosis
  • Thermal Warning and Shutdown
  • Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs, 5 VTolerant Open Drain Outputs
  • Reset Function
  • Overcurrent Protection
  • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHSCompliant

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NCV70517MW002R2G

Active

CAD Model

Pb

A

H

P

QFNW-32

484AB

1

260

REEL

5000

Y

6

29

6

29

0.8

1.1

1/16

SPI

Fully Integrated

Open Coil

$1.6794

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