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Anglia delivers by
STMicroelectronics introduces the easySPIN SPI fully integrated micro stepping motor driver
The L6474 is a new ST micro stepping driver conceived to achieve high performance and optimise the application through easy and friendly control of the motor. It is realised in analogue mixed signal technology, and integrates a dual low Rdson DMOS full bridge with all power switches equipped with an accurate on-chip current sensing circuitry suitable for non-dissipative current control and overcurrent protection. Thanks to a new current control, 1/16 micro stepping is achieved through an adaptive decay mode which outperforms traditional implementations.
All data registers, including those used to set analogue values (i.e. current control value, current protection trip point, dead time, etc.) are sent through a standard 5 Mbit/s SPI.
A very rich set of protection (thermal, low bus voltage, overcurrent) makes the L6474 “bullet proof” as required by the most demanding motor control applications.
Key Features
- Operating voltage: 8 - 45 V
- 7.0 A output peak current (3.0 A r.m.s.)
- Low Rdson power MOSFETS
- Programmable power MOS slew-rate
- Up to 1/16 micro stepping
- Current control with adaptive decay
- Non-dissipative current sensing
- SPI interface
- Low quiescent and standby currents
- Programmable non dissipative overcurrent protection on all power MOS
- Two-level overtemperature protection
For more information, or details on the full range of STMicroelectronics products available from Anglia, please email info@anglia.com
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This news article was originally published in March 2012.
