The L6480H is a microstepping Motor Controller with motion engine and SPI. It is realized in analogue mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping. It integrates a dual full bridge gate driver for N-channel MOSFET power stages with embedded non dissipative overcurrent protection. Thanks to unique voltage mode driving mode which compensates for BEMF, bus voltage and motor winding variations, the microstepping of a true 1/128-step resolution is achieved. The digital control core can generate user defined motion profiles with acceleration, deceleration, speed or target position easily programmed through a dedicated register set. All application commands and data registers, including those used to set analogue values (current protection trip point, deadtime, PWM frequency) are sent through a standard 5Mbps SPI.
● Dual full bridge gate driver for N-channel MOSFETs
● Fully programmable gate driving
● Embedded Miller clamp function
● Programmable speed profile
● Up to 1/128 microstepping
● Sensorless stall detection
● Integrated voltage regulators
● SPI interface
● Low quiescent standby currents
● Programmable non dissipative overcurrent protection
● Over-temperature protection
● 5.5V Logic interface supply voltage
● 18V Low-side gate driver supply voltage
● 4W Total power dissipation (Temperature=25°C)
