STMicroelectronics L6470
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. The digital control core can generate user defined motion profiles with acceleration, deceleration, speed or target position, easily programmed through a dedicated registers set.| Part No. | L6470 |
|---|---|
| Datasheet | L6470 Download |
| Manufacturer |  STMicroelectronics |
| Description | Fully integrated microstepping motor driver |
| Buy | Stock & Price |
APPLICATIONS
● Bipolar stepper motors POWERSO36 HTSSOP28FEATURES
● 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
Thanks to a unique control system, a true 1/128 steps resolution is achieved. 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.
