Описание продукта
The NCV70522MN 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 NCV70522MN contains a current-translation table. It takes the next micro-step depending on the clock signal on the stepping input pin (NXT) and the status of the direction register or input pin (DIR). A reliable current control is achieved using an integrated proprietary PWM algorithm.
The NCV70522MN includes a so-called Speed and Load Angle(SLA) output, allowing the creation of stall detection algorithms and control loops to adjust torque and speed based on the motor's back electromotive force (BEMF).
The NCV70522MN 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 voltage and temperature requirements and suited to general purpose stepper motor applications in the automotive, industrial, medical and marine domains.
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Отличительные черты |
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Dual H-Bridge for 2 Phase Stepper Motors
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Programmable Peak-Current up to 1.2 A Continuous (1.5 A Short Time), Using a 5-Bit Current DAC
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On-Chip Current Translator
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Speed and Load-Angle Output
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7 Step Modes from Full-Step up to 32 MicroSteps
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Fully Integrated Current-Sense
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PWM Current Control with Automatic Selection of Fast and Slow Decay
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Low EMC PWM with Selectable Voltage Slopes
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Full Output Protection and Diagnosis
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Thermal Warning and Shutdown
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Digital IOs Compatible with 5 V and 3.3 V Microcontrollers
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Integrated 5 V Voltage Regulator to Supply an External Microcontroller
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Integrated Reset Function to Reset External Microcontroller
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Integrated Watchdog Function
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Применения |
- Headlamp Actuators
- LPG Valves
- Idle Speed Control
- Suspension Valves
- Folding Multi-Media Displays
- ...
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