L6470HTR - dSPIN Stepper Motor Driver | STMicroelectronics
MPN: L6470HTR ✓ نشطL6470HTR نظرة عامة
A stepper motor driver is a power management IC that translates digital step and direction commands into the precise current sequences needed to rotate a stepper motor. The L6470HTR integrates the control logic, gate drivers, and power MOSFETs, eliminating the need for external components and simplifying PCB design. It belongs to the hierarchy: stepper motor driver -> motor driver -> power management IC -> semiconductor. This integration reduces system cost and board space while improving reliability.
Key features of the L6470HTR include programmable microstepping up to 1/128 step, which provides smooth motion and high positioning accuracy. It offers a wide range of protection features, including overcurrent, overtemperature, and undervoltage lockout. The device also includes a SPI interface for configuration and control, allowing real-time adjustment of motor parameters. The integrated current sensing eliminates the need for external sense resistors, further reducing component count.
The L6470HTR uses a proprietary control algorithm that automatically adjusts the current decay mode to optimize performance across different motor types and load conditions. This adaptive decay control minimizes audible noise and power dissipation. The device also features a programmable slew rate to reduce electromagnetic interference (EMI) in sensitive applications. The digital core operates at up to 16 MHz SPI clock, enabling fast communication with microcontrollers.
Typical applications include 3D printers, CNC machines, robotics, office automation, and industrial automation. In 3D printers, the L6470HTR provides precise filament positioning with microstepping, resulting in high-quality prints. In CNC machines, it drives stepper motors for axis movement with high torque and accuracy. The device's wide voltage range and current capability make it versatile for various motor sizes.
When designing with the L6470HTR, ensure proper thermal management by providing adequate copper area on the PCB for heat dissipation. The HTSSOP28 package has an exposed pad that must be soldered to a thermal relief. Additionally, place decoupling capacitors close to the power supply pins to minimize voltage transients. The SPI interface allows configuration of motor parameters, but careful attention to the register settings is required to avoid unintended behavior.
بدائل مباشرة لـ L6470HTR — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
L6472HTR
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
DRV8825
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
L6470HTR الحدود القصوى والخصائص الكهربائية
| Supply Voltage Range | 8 V to 45 V |
| Output Current (Peak) | 3 A per phase |
| Output Current (RMS) | 2.1 A per phase |
| Microstepping Resolution | Up to 1/128 step |
| Control Interface | SPI (up to 16 MHz) |
| Number of Channels | 2 (dual full-bridge) |
| Motor Type | Bipolar stepper |
| Protection Features | Overcurrent, overtemperature, undervoltage lockout |
| العلبة | HTSSOP28 |
| نوع التركيب | Surface Mount |
| نطاق درجة حرارة التشغيل | -40°C to +150°C (junction) |
| الإيقاف الحراري | Yes |
| Current Decay Mode | Adaptive |
| Slew Rate Control | Programmable |
| حالة RoHS | Compliant |
تكوين أطراف L6470HTR
| دبوس 1 | VCC — Logic supply voltage |
| دبوس 2 | GND — Ground |
| دبوس 3 | OUT1A — Motor output phase A |
| دبوس 4 | OUT1B — Motor output phase A |
| دبوس 5 | OUT2A — Motor output phase B |
| دبوس 6 | OUT2B — Motor output phase B |
| دبوس 7 | VS — Motor supply voltage |
| دبوس 8 | GND — Ground |
| دبوس 9 | SPI_CLK — SPI clock input |
| دبوس 10 | SPI_CS — SPI chip select |
| دبوس 11 | SPI_DI — SPI data input |
| دبوس 12 | SPI_DO — SPI data output |
| دبوس 13 | FLAG — Error flag output |
| دبوس 14 | RESET — Reset input |
| دبوس 15 | STCK — Step clock input |
| دبوس 16 | DIR — Direction input |
| دبوس 17 | EN — Enable input |
| دبوس 18 | GND — Ground |
| دبوس 19 | VCC — Logic supply voltage |
| دبوس 20 | GND — Ground |
| دبوس 21 | NC — Not connected |
| دبوس 22 | NC — Not connected |
| دبوس 23 | NC — Not connected |
| دبوس 24 | NC — Not connected |
| دبوس 25 | NC — Not connected |
| دبوس 26 | NC — Not connected |
| دبوس 27 | NC — Not connected |
| دبوس 28 | NC — Not connected |
التطبيقات النموذجية
L6470HTR مناسب لـ 6 التطبيقs: 3D Printers, CNC Machines, Robotics, Office Automation, Industrial Automation, Medical Devices.
3D Printers
The L6470HTR is widely used in 3D printers to drive stepper motors for filament extrusion and axis movement. Its high microstepping resolution (up to 1/128 step) ensures smooth and precise motion, which is critical for print quality. The device's adaptive current decay control minimizes audible noise and vibration, resulting in quieter operation. With a peak current of 3 A, it can drive a wide range of NEMA 17 and NEMA 23 motors commonly found in 3D printers. The SPI interface allows the printer controller to adjust motor parameters in real time, enabling features like current limiting and stall detection. The integrated protection features, including overcurrent and overtemperature shutdown, enhance system reliability. The HTSSOP28 package is compact, fitting well on printer control boards. Overall, the L6470HTR provides a robust and flexible solution for 3D printer motion control.
موصى به
CNC Machines
In CNC machines, the L6470HTR drives stepper motors for precise axis positioning. Its high current capability (3 A peak) ensures sufficient torque for cutting and milling operations. The microstepping feature allows fine positioning, which is essential for achieving tight tolerances. The device's adaptive decay control optimizes motor performance across different speeds and loads, reducing heat generation and improving efficiency. The SPI interface enables the CNC controller to dynamically adjust current and speed settings, providing flexibility for various machining tasks. The wide supply voltage range (8 V to 45 V) accommodates different power supply configurations. The integrated protection features, such as overcurrent and overtemperature shutdown, protect the motor and driver from damage. The HTSSOP28 package is suitable for compact CNC controller boards. Overall, the L6470HTR offers a reliable and high-performance solution for CNC motion control.
موصى به
Robotics
The L6470HTR is used in robotics to drive stepper motors for joint actuation and wheel movement. Its high microstepping resolution enables smooth and precise motion, which is important for tasks like pick-and-place and navigation. The device's adaptive current decay control reduces power consumption and heat generation, extending battery life in mobile robots. The SPI interface allows the robot controller to adjust motor parameters in real time, enabling features like torque control and stall detection. The wide supply voltage range (8 V to 45 V) supports various battery configurations. The integrated protection features, including overcurrent and overtemperature shutdown, enhance system safety. The HTSSOP28 package is compact, fitting well on robot control boards. Overall, the L6470HTR provides a versatile and efficient solution for robotic motion control.
موصى به
Office Automation
The L6470HTR is used in office automation equipment such as printers, scanners, and copiers to drive stepper motors for paper feeding and scanning mechanisms. Its high microstepping resolution ensures smooth and quiet operation, which is important for office environments. The device's adaptive current decay control minimizes audible noise and vibration, enhancing user experience. The SPI interface allows the equipment controller to adjust motor parameters for different paper sizes and media types. The wide supply voltage range (8 V to 45 V) accommodates various power supply designs. The integrated protection features, including overcurrent and overtemperature shutdown, improve reliability. The HTSSOP28 package is compact, fitting well on control boards. Overall, the L6470HTR provides a reliable and efficient solution for office automation motion control.
موصى به
Industrial Automation
The L6470HTR is used in industrial automation systems to drive stepper motors for conveyor belts, packaging machines, and assembly lines. Its high current capability (3 A peak) ensures sufficient torque for heavy loads. The microstepping feature allows precise positioning, which is essential for automated processes. The device's adaptive current decay control optimizes motor performance across different operating conditions, reducing energy consumption and heat generation. The SPI interface enables the industrial controller to adjust motor parameters in real time, providing flexibility for various tasks. The wide supply voltage range (8 V to 45 V) supports industrial power supplies. The integrated protection features, including overcurrent and overtemperature shutdown, enhance system reliability. The HTSSOP28 package is suitable for industrial control boards. Overall, the L6470HTR offers a robust and high-performance solution for industrial motion control.
موصى به
Medical Devices
The L6470HTR is used in medical devices such as infusion pumps, diagnostic equipment, and laboratory automation to drive stepper motors for precise fluid control and sample handling. Its high microstepping resolution ensures accurate and smooth motion, which is critical for medical applications. The device's adaptive current decay control minimizes noise and vibration, which is important for patient comfort. The SPI interface allows the medical device controller to adjust motor parameters for different protocols. The wide supply voltage range (8 V to 45 V) supports various power supply designs. The integrated protection features, including overcurrent and overtemperature shutdown, enhance safety. The HTSSOP28 package is compact, fitting well on medical device boards. Overall, the L6470HTR provides a reliable and precise solution for medical motion control.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ L6470HTR — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | L6472HTR | L6470PD | DRV8825 |
|---|---|---|---|---|
| Package | HTSSOP28 | HTSSOP28 | PowerSO-28 | HTSSOP28 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments |
| Supply Voltage Range | 8 V to 45 V | 8 V to 45 V | 8 V to 45 V | 8.2 V to 45 V |
| Peak Output Current | 3 A | 1.5 A | 3 A | 2.5 A |
| Microstepping Resolution | Up to 1/128 step | Up to 1/128 step | Up to 1/128 step | Up to 1/32 step |
| Control Interface | SPI | SPI | SPI | Step/Dir |
| Protection Features | Overcurrent, overtemperature, undervoltage | Overcurrent, overtemperature, undervoltage | Overcurrent, overtemperature, undervoltage | Overcurrent, overtemperature, undervoltage |
| Price (1 pcs) | $6.50 | $5.20 | $6.50 | $3.50 |
أبرز الفروقات
- Higher peak current (3 A) compared to L6472HTR (مقابلL6472HTR)
- SPI interface with advanced control features (مقابلDRV8825)
- Higher microstepping resolution (1/128) compared to DRV8825 (مقابلDRV8825)
ملاحظات التصميم
The L6470HTR can dissipate significant power when driving high currents. Ensure the exposed pad on the HTSSOP28 package is soldered to a large copper area on the PCB to act as a heat sink. For continuous operation at 3 A, a minimum of 2 square inches of copper is recommended. Use thermal vias to connect the pad to inner layers for better heat spreading.
Place a 100 nF ceramic capacitor close to each power supply pin (VS and VCC) to decouple high-frequency noise. Additionally, use a bulk capacitor (e.g., 10 uF) on the VS pin to handle current transients. Keep the SPI lines short and avoid routing them near high-current traces to prevent interference.
Do not exceed the absolute maximum ratings, especially the supply voltage (45 V) and output current (3 A peak). Ensure the SPI communication is properly configured before enabling the motor. Incorrect register settings can cause unexpected motor behavior. Also, note that the L6470HTR requires a logic supply (VCC) separate from the motor supply (VS); both must be present for proper operation.
معلومات الامتثال
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified.
