Overview
The L6472PDTR, produced by STMicroelectronics, is a fully integrated microstepping motor driver designed for driving two-phase bipolar stepper motors. This device is realized in analog mixed signal technology and offers advanced features for precise motor control. It integrates a dual low RDS(on) DMOS full bridge with accurate on-chip current sensing circuitry, enabling non-dissipative current control and overcurrent protection. The L6472PDTR supports up to 1/16 microstepping through an adaptive decay mode, outperforming traditional implementations. It also features a digital control core that can generate user-defined motion profiles with acceleration, deceleration, speed, or target position, all easily programmed via a dedicated register set and 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 Capability | Up to 1/16 |
| Current Control | Predictive current control with adaptive decay |
| Current Sensing | Non dissipative current sensing |
| Interface | Standard 5-Mbit/s SPI |
| Quiescent and Standby Currents | Low |
| Overcurrent Protection | Programmable non dissipative overcurrent protection on all power MOSFETs |
| Overtemperature Protection | Two levels |
| Package | PowerSO 36 |
| Operating Temperature | -40°C to 150°C |
Key Features
- Programmable speed profile
- Programmable power MOSFET slew rate
- Predictive current control with adaptive decay
- Non dissipative current sensing
- Standard 5-Mbit/s SPI interface
- Low quiescent and standby currents
- Programmable non dissipative overcurrent protection on all power MOSFETs
- Two levels of overtemperature protection
- Thermal, low bus voltage, and overcurrent protections
Applications
The L6472PDTR is suitable for a variety of applications involving bipolar stepper motors, including:
- Industrial automation
- Medical devices
- Printers and plotters
- Textile machines
- Other precision motion control systems
Q & A
- What is the operating voltage range of the L6472PDTR?
The operating voltage range is 8 - 45 V.
- What is the maximum output peak current of the L6472PDTR?
The maximum output peak current is 7.0 A (3.0 A r.m.s.).
- What is the microstepping capability of the L6472PDTR?
The L6472PDTR supports up to 1/16 microstepping.
- How does the L6472PDTR manage current control?
The device uses predictive current control with adaptive decay.
- What type of interface does the L6472PDTR use for communication?
The device uses a standard 5-Mbit/s SPI interface.
- What kind of protections does the L6472PDTR offer?
The device offers thermal, low bus voltage, and overcurrent protections, along with two levels of overtemperature protection.
- What is the package type of the L6472PDTR?
The package type is PowerSO 36.
- What is the operating temperature range of the L6472PDTR?
The operating temperature range is -40°C to 150°C.
- How is the current sensing implemented in the L6472PDTR?
The current sensing is non-dissipative.
- Can the power MOSFET slew rate be programmed in the L6472PDTR?
Yes, the power MOSFET slew rate can be programmed.
