L6480 Datasheet, PDF (1/73 Pages) STMicroelectronics – The L6480, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping.

L6480
cSPIN™: microstepping motor controller
with motion engine and SPI
Datasheet − production data
Features
■ Operating voltage: 7.5 V - 85 V
■ Dual full-bridge gate driver for N-channel
MOSFETs
■ Fully programmable gate driving
■ Embedded Miller clamp function
■ Programmable speed profile
■ Up to 1/128 microstepping
■ Sensorless stall detection
■ Integrated voltage regulators
■ SPI interface
■ Low quiescent standby currents
■ Programmable non-dissipative overcurrent
protection
■ Overtemperature protection
Applications
■ Bipolar stepper motor
Description
The L6480, 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 full-bridge gate driver for N-
channel MOSFET power stages with embedded
non-dissipative overcurrent protection. Thanks to
HTSSOP38
a unique voltage mode driving mode which
compensates for BEMF, bus voltage and motor
winding variations, the microstepping of a true
1/128-step 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 register set. All application commands
and data registers, including those used to set
analog values (i.e. 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
and motor stall) make the L6480 “bullet proof”, as
required by the most demanding motor control
applications.
Table 1.
Device summary
Order codes
L6480H
L6480HTR
Package
HTSSOP38
HTSSOP38
Packaging
Tube
Tape and reel
December 2012
This is information on a product in full production.
Doc ID 023278 Rev 3
1/73
www.st.com
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