STMicroelectronics EVL6482

Overview

EVL6482 from STMicroelectronics is a stepper motor driver evaluation board based on the L6482H IC, designed for two-phase bipolar stepper motors with 1/16 microstepping, 7.5–85 V supply range, and integrated dual full-bridge N-channel MOSFET gate drivers in DPAK package.

For engineers reviewing the EVL6482 datasheet, EVL6482 pinout, EVL6482 application, or EVL6482 equivalent, key considerations include Arduino® UNO R3 connector compatibility, SPI-based motion profile programming (5 Mbit/s), thermal/overcurrent/stall protection, and stackable multi-motor configuration support up to three axes.

Technical Context

The EVL6482 implements an adaptive decay current control architecture enabling precise 1/16 microstepping without external chopper resistors. Its digital control core executes user-defined motion profiles-including acceleration, deceleration, target position, and speed-via dedicated SPI-accessible registers.

All analog configuration parameters (e.g., overcurrent trip point, dead time, PWM frequency) are programmable through the same 5-Mbit/s SPI interface. The board integrates non-dissipative overcurrent protection, thermal shutdown, low-bus-voltage detection, and motor stall sensing for robust operation in demanding industrial motion systems.

Key Specifications

Availability

EVL6482 is available at Aetrix Electronics and suitable for industrial CNC positioning, automated optical alignment, precision lab instrumentation, and multi-axis robotic actuation requiring stable component supply and rapid prototyping capability.

Supply support for EVL6482 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in microcontrollers, power management, analog ICs, and motor control solutions for industrial, automotive, and consumer applications.

The EVL6482 belongs to ST's motor control evaluation platform family, engineered to accelerate development of high-precision, protected stepper motor systems using their L6482H gate driver IC.

FAQ

What microstepping resolutions does the EVL6482 support?

The EVL6482 supports microstepping resolutions up to 1/16 via the L6482H's adaptive decay current control algorithm. This eliminates external current-sense resistor adjustments and delivers smoother torque response compared to fixed-decay implementations. Resolution is configured through SPI register writes to the STEP_MODE bits (bits 1:0 of REG1).

How is motion profiling implemented on the EVL6482?

Motion profiling is handled entirely by the L6482H's embedded digital control core. Users program acceleration, deceleration, target position, and speed via SPI-accessible registers (e.g., REG3–REG6). No external MCU firmware is required for basic trapezoidal or S-curve motion-only SPI command sequencing.

Can multiple EVL6482 boards be used together?

Yes-EVL6482 supports stacking via its Arduino UNO R3 footprint and dedicated chip-select lines (CS_1, CS_2, CS_3). Up to three boards can operate independently on a shared SPI bus, each addressed via its respective CS line, enabling synchronized multi-axis control without additional level-shifting or bus arbitration.

What protections are implemented on the EVL6482 board?

The EVL6482 inherits full protection from the L6482H: non-dissipative overcurrent detection on both phases, thermal shutdown (TJ > 150°C), undervoltage lockout on VCC/VREG/VS rails, and motor stall detection via back-EMF monitoring. All protections trigger automatic fault latching and FLAG pin assertion, visible via onboard yellow LED.