EVAL6470H Datasheet, PDF (1/70 Pages) STMicroelectronics – dSPIN fully integrated microstepping motor driver with motion engine and SPI

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 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
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 R_DS(on) DMOS full-bridge with all of the
POWERSO36
HTSSOP28
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.
Table 1.
Device summary
Order codes
L6470H
L6470HTR
L6470PD
L6470PDTR
Package
HTSSOP28
HTSSOP28
POWERSO36
POWERSO36
Packaging
Tube
Tape and reel
Tube
Tape and reel
December 2012
This is information on a product in full production.
Doc ID16737 Rev 5
1/70
www.st.com
70