Overview
The L6480H, produced by STMicroelectronics, is an advanced fully integrated microstepping motor controller designed for driving two-phase bipolar stepper motors. Realized in analog mixed signal technology, this device offers a comprehensive solution for motor control applications. It integrates a dual full bridge gate driver for N-channel MOSFET power stages, ensuring robust and efficient motor operation. The L6480H features a unique voltage mode driving mode that compensates for back-EMF, bus voltage, and motor winding variations, enabling true 1/128-step microstepping resolution. This device is particularly suited for demanding motor control applications due to its rich set of protections, including thermal, low bus voltage, overcurrent, and motor stall protection.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 7.5 V - 85 V |
| Microstepping Resolution | Up to 1/128 steps |
| Gate Driver Type | Dual full bridge gate driver for N-channel MOSFETs |
| Communication Interface | SPI (up to 5 Mbit/s) |
| Package Type | HTSSOP38 |
| Overcurrent Protection | Programmable non-dissipative overcurrent protection |
| Thermal Protection | Overtemperature protection and thermal warning |
| Integrated Voltage Regulators | Yes |
Key Features
- Fully programmable gate driving and embedded Miller clamp function
- Programmable speed profiles with acceleration, deceleration, speed, or target position
- Sensorless stall detection and low speed optimization
- BEMF compensation and motor supply voltage compensation
- Integrated analog to digital converter and internal voltage regulators
- Low quiescent standby currents and programmable non-dissipative overcurrent protection
- Thermal warning and thermal shutdown protection
Applications
The L6480H is suitable for a variety of applications that require precise control of bipolar stepper motors, including:
- Industrial automation and robotics
- Medical devices and equipment
- Printers and scanners
- Automotive systems requiring precise motor control
- Any application requiring high-resolution microstepping and robust motor protection
Q & A
- What is the operating voltage range of the L6480H?
The operating voltage range of the L6480H is 7.5 V to 85 V.
- What is the maximum microstepping resolution of the L6480H?
The L6480H supports up to 1/128-step microstepping resolution.
- What type of gate driver does the L6480H use?
The L6480H uses a dual full bridge gate driver for N-channel MOSFETs.
- What communication interface does the L6480H support?
The L6480H supports an SPI interface up to 5 Mbit/s.
- What package type is the L6480H available in?
The L6480H is available in the HTSSOP38 package type.
- Does the L6480H have overcurrent protection?
Yes, the L6480H has programmable non-dissipative overcurrent protection.
- What thermal protections does the L6480H offer?
The L6480H offers overtemperature protection and thermal warning.
- Does the L6480H have integrated voltage regulators?
Yes, the L6480H has integrated voltage regulators.
- What are some common applications of the L6480H?
The L6480H is commonly used in industrial automation, medical devices, printers, scanners, and automotive systems requiring precise motor control.
- How does the L6480H compensate for motor variations?
The L6480H compensates for back-EMF, bus voltage, and motor winding variations through its unique voltage mode driving mode.
