Motor Drivers, Stepper | NCV70517

微步进电机驱动器

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NCV70517 是一款用于双极步进电机的微步进电机驱动器。该芯片通过 IO 引脚和 SPI 接口与外部微控制器进行联接。NCV70517 包含一个电流转换表，根据 NXT 输入引脚上的时钟信号以及 DIR（方向）寄存器或输入引脚的状态采用下一个微步进。如果检测到电气错误、欠电压或结温升高，该芯片则会提供错误消息。它使用专属的 PWM 算法实现可靠的电流控制。 NCV70517 完全符合汽车电压要求，非常适合汽车、工业、医疗和海洋环境中的通用型步进电机应用。 由于采用这一技术，此器件特别适合使用波动电池电源的应用。

  • 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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Reference Price

NCV70517MW002R2G

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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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可靠性数据

Die Related Summary Data

Device: NCV70517MW002R2G

Equivalent to wafer fab process: I3T

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

I3T

4

4350769675

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Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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