L6472H Datasheet PDF - ST Microelectronics

The L6472H is a fully integrated microstepping Motor Driver 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 low RDS(on) DMOS full bridge with all of the power switches equipped with an accurate on-chip current sensing circuitry suitable for non dissipative current control and overcurrent protection. Thanks to a new current control, a 1/16 microstepping is achieved through an adaptive decay mode which outperforms traditional implementations. 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 control value, current protection trip point, deadtime) are sent through a standard 5Mbps SPI.

● Low RDS(on) power MOSFETs

● Programmable speed profile

● Programmable power MOSFET slew rate

● Up to 1/16 microstepping

● Predictive current control with adaptive decay

● Non-dissipative current sensing

● SPI interface

● Low quiescent and standby current

● Programmable non dissipative overcurrent protection on all power MOSFETs

● Two levels of over-temperature protection

● 5W Total power dissipation (TA=25°C)