L6470 查看數據表（PDF） - STMicroelectronics
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L6470 Datasheet PDF : 73 Pages
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L6470
Fully integrated microstepping motor driver with motion engine
and SPI
Datasheet - production data
Applications
Bipolar stepper motors
POWERSO36
HTSSOP28
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
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 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.
Order codes
L6470H
L6470HTR
L6470PD
L6470PDTR
Table 1. Device summary
Package
HTSSOP28
HTSSOP28
POWERSO36
POWERSO36
Packaging
Tube
Tape and reel
Tube
Tape and reel
March 2015
This is information on a product in full production.
DocID16737 Rev 7
1/73
www.st.com
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