Description

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 onchip current sensing circuitry suitable for nondissipative 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.

Features

? Operating voltage: 8 - 45 V

? 7.0 A out peak current (3.0 A r.m.s.)

? Low R DS(on) Power MOSFETs

? Programmable speed profile and positioning

? Programmable power MOS slew rate

? Up to 1/128 microstepping

? Sensorless stall detection

? SPI interface

? Low quiescent and standby currents

? Programmable non-dissipative overcurrent protection on high and low-side

? Two-levels of overtemperature protection

Applications

? Bipolar stepper motors

L6470H屬于集成電路（IC） > 電機(jī)驅(qū)動器，控制器。意法半導(dǎo)體（ST）集團(tuán)制造生產(chǎn)的L6470H電機(jī)驅(qū)動器，控制器產(chǎn)品屬于電機(jī)驅(qū)動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機(jī)或相關(guān)機(jī)電執(zhí)行器的電源。所實現(xiàn)的具體功能和特性集根據(jù)預(yù)期負(fù)載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機(jī)的簡單開環(huán)速度控制到基于步進(jìn)電機(jī)的高級閉環(huán)運動控制。