NCV70517MW002R2G

NCV70517MW002R2G is a NCV70517 micro-stepping 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 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 an electrical error, an under-voltage, or an elevated junction temperature is detected. It uses a proprietary PWM algorithm for reliable current control. It 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 environments. Due to the technology, the device is especially suited for use in applications with fluctuating battery supplies.

• Dual H-bridge for 2-phase stepper motors
• Low temperature boost current up to 1100mA (BB = 14V, Tj= -45°C)
• On-chip current translator, SPI interface, reset function, overcurrent protection
• 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 fixed PWM frequency, Active Fly-back diodes
• PWM current control with automatic selection of fast and slow decay
• Full output protection and diagnosis, thermal warning and shutdown
• Compatible with 3.3V microcontrollers, 5V tolerant inputs, 5V tolerant open drain outputs
• QFNW32 package, functional operating junction temperature range from -40 to 160°C