製品説明
The NCV70514 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 NCV70514 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 an error message if stall, an electrical error, an under−voltage or an elevated junction
temperature is detected. It is using a proprietary PWM algorithm for reliable current control.
NCV70514 is fully compatible with the automotive voltage requirements and is ideally suited for general−purpose stepper motor applications in the automotive, industrial, medical, and marine environment.
Due to the technology, the device is especially suited for use in applications with fluctuating battery supplies.
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特長 |
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Dual H−bridge for 2−phase Stepper Motors
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Programmable Peak−current up to 800 mA
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On−chip Current Translator
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SPI Interface with Daisy Chain Capability
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7 Step Modes from Full−step up to 32 Micro−steps
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Fully Integrated Current−sensing and Current−regulation
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PWM Current Control with Automatic Selection of Fast and Slow Decay
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Full Output Protection and Diagnosis
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Thermal Warning and Shutdown
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Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs, 5 V Tolerant Open Drain Outputs
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Enhanced Under Voltage Management
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Step Mode Selection Inputs
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These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant
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アプリケーション |
- 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)
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