The integrated stepper motor controller implements PWM current control with fixed Off time.
It offers very precise control of a motor’s rotation, with movement regulated to a resolution of up to 1/256th of a step.
The power stage consists of two full bridges. At just 1Ω, the combined on-resistance of the driver’s high-side and low-side MOSFETs helps the device to achieve high operating efficiency.
The STSPIN820 offers a complete set of protection features including over-current, over-temperature, under-voltage lock-out and short-circuit protection. The driver includes current-sensing logic, the operation of which requires an external shunt resistor.
- Operating-voltage range: 7V to 45V
- 1.5Arms maximum output current
- Low stand-by power consumption
- Current control with programmable Off time set via external resistor
- 2kV ESD rating on the human body model
- 3D printers
- Medical equipment
- Industrial 2D printers
- Security cameras
- Cash handling machines
- Office and home automation equipment
- Point-of-sale terminals
A stepper motor driver expansion board compatible with the Arduino UNO R3 and ST morpho connectors, so it can be plugged into any STM32 Nucleo development board and stacked with additional X-NUCLEO expansion boards.
Orderable Part Number: X-NUCLEO-IHM14A1