Driver moteur Non Pont complet STMicroelectronics 800 kHz 36 broches SO-8 45V Pas-à-pas L6470

The L6470 device, realized in analog 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 unique control system, a true 1/128 steps 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 registers set. All commands and data registers, including those used to set analogue values (i.e. current control value, current protection trip point, deadtime, PWM frequency, etc.) are sent through a standard 5-Mbit/s SPI. A very rich set of protections (thermal, low bus voltage, overcurrent, motor stall) allows the design of a fully protected application, as required by the most demanding motor control applications.

• Tension d'utilisation : 8 - 45 V.
• Courant de Peak de 7 A (3 A r.m.s.)
• Transistors MOSFET à faible puissance RDS(on)
• Profil de vitesse et positionnement programmables
• Vitesse de balayage MOS à puissance programmable
• Jusqu'à 1/128 micropas
• Détection de calage sans capteur
• Interface SPI
• Faibles courants de repos et de veille
• Protection contre les surintensités non dissipatives programmable sur les côtés haut et bas
• Protection contre les surchauffes à deux niveaux
• Applications
• Moteurs pas à pas bipolaires