STMicroelectronics Circuito integrado de driver de motor, CI de driver de motor Puente completo 800 kHz 36 pines SO-8

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.

• Tensión de funcionamiento: 8 - 45 V.
• 7.0 Corriente Peak Out (3.0 A r.m.s.)
• Baja RDS(on)Power MOSFETs
• Perfil de velocidad y posicionamiento programables
• Potencia programable Velocidad de corte MOS
• Micropasos de hasta 1/128
• Detección de bloqueo sin sensor
• Interfaz SPI
• Corrientes bajas de reposo y de espera
• Protección de sobrecorriente no disipativa programable en los lados alto y bajo
• Dos niveles de protección contra sobretemperatura
• Aplicaciones
• Motores de pasos bipolares