Overview
The L6472PD, produced by STMicroelectronics, is an advanced fully integrated microstepping motor driver designed for driving two-phase bipolar stepper motors. Realized in analog mixed signal technology, this device integrates a dual low RDS(on) DMOS full bridge with accurate on-chip current sensing circuitry. This allows for non-dissipative current control and overcurrent protection, making it highly reliable for demanding motor control applications. The L6472PD supports up to 1/16 microstepping through an adaptive decay mode and features a digital control core that can generate user-defined motion profiles with acceleration, deceleration, speed, or target position, all programmable through a standard 5-Mbit/s SPI interface.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 8 - 45 V |
| Output Peak Current | 7.0 A (3.0 A r.m.s.) |
| Power MOSFETs | Low RDS(on) |
| Microstepping | Up to 1/16 |
| Current Sensing | Non-dissipative |
| Interface | 5-Mbit/s SPI |
| Package | PowerSO 36 |
| Operating Temperature | -40°C to 150°C |
| RoHS Compliance | Ecopack2 |
Key Features
- Programmable speed profile
- Programmable power MOSFET slew rate
- Predictive current control with adaptive decay
- Non-dissipative overcurrent protection on all power MOSFETs
- Two levels of overtemperature protection
- Low quiescent and standby currents
- Digital control core for user-defined motion profiles
Applications
The L6472PD is suitable for a wide range of applications requiring precise and reliable motor control, including industrial automation, medical devices, 3D printers, CNC machines, and other equipment that use two-phase bipolar stepper motors.
Q & A
- What is the operating voltage range of the L6472PD?
The operating voltage range is 8 - 45 V. - What is the maximum output peak current of the L6472PD?
The maximum output peak current is 7.0 A (3.0 A r.m.s.). - What type of microstepping does the L6472PD support?
The L6472PD supports up to 1/16 microstepping. - What interface does the L6472PD use for communication?
The L6472PD uses a 5-Mbit/s SPI interface. - What are the key protection features of the L6472PD?
The key protection features include thermal protection, low bus voltage protection, and overcurrent protection. - What is the package type of the L6472PD?
The package type is PowerSO 36. - Is the L6472PD RoHS compliant?
Yes, the L6472PD is RoHS compliant with an Ecopack2 grade. - What are the typical applications of the L6472PD?
The typical applications include industrial automation, medical devices, 3D printers, and CNC machines. - How does the L6472PD achieve non-dissipative current control?
The L6472PD achieves non-dissipative current control through its on-chip current sensing circuitry. - Can the L6472PD generate user-defined motion profiles?
Yes, the L6472PD can generate user-defined motion profiles with acceleration, deceleration, speed, or target position through its digital control core.
