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L6470H Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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L6470H Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 70 page This is information on a product in full production. December 2012 Doc ID16737 Rev 5 1/70 70 L6470 dSPIN™ fully integrated microstepping motor driver with motion engine and SPI Datasheet − production data Features ■ Operating voltage: 8 - 45 V ■ 7.0 A out peak current (3.0 A r.m.s.) ■ Low RDS(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 Description The L6470, 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. HTSSOP28 POWERSO36 Table 1. Device summary Order codes Package Packaging L6470H HTSSOP28 Tube L6470HTR HTSSOP28 Tape and reel L6470PD POWERSO36 Tube L6470PDTR POWERSO36 Tape and reel www.st.com |
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