STMicroelectronics EVLPOWERSTEP01

Overview

EVLPOWERSTEP01 from STMicroelectronics is a demonstration board for the powerSTEP01 system-in-package motor driver, integrating microstepping controller and 10 A r.m.s. power MOSFET bridges. It supports 10.5–85 V supply, up to 1/128 microstepping, SPI daisy chain, and real-time control of high-power bipolar stepper motors in industrial motion systems.

For engineers reviewing the EVLPOWERSTEP01 datasheet, EVLPOWERSTEP01 pinout, EVLPOWERSTEP01 application, or EVLPOWERSTEP01 equivalent, this board enables rapid evaluation of multi-axis stepper control, current regulation, speed profiling, and fault signaling (FLAG/BUSY) in stage lighting, surveillance pan-tilt units, textile machinery, and pick-and-place automation.

Technical Context

The board implements the full powerSTEP01 IC functionality-including dual H-bridge gate drivers, current sensing via shunt resistors on both phases, adaptive decay control, and internal voltage regulators (VSREG, VCCREG, VREG). It interfaces directly with the STEVAL-PCC009V2 communication board for USB-to-SPI translation and GUI-based parameter tuning.

It supports flexible power architecture: main supply (10.5–85 V) feeds VS and VSREG; VCC (7.5–15 V) powers gate drivers; logic rails (3.3 V or 5 V tolerant) drive SPI, STEP/DIR, and control inputs. Daisy chain capability allows synchronized control of multiple EVLPOWERSTEP01 boards using a single SPI master.

Key Specifications

Availability

EVLPOWERSTEP01 is available at Aetrix Electronics and suitable for stage lighting control systems, surveillance camera pan-tilt-zoom mechanisms, and textile machine motor drives requiring stable component supply and rapid prototyping support.

Supply support for EVLPOWERSTEP01 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, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The EVLPOWERSTEP01 belongs to ST's motor control evaluation platform family, engineered to accelerate development of intelligent stepper drive systems with integrated motion control algorithms and robust power stages.

FAQ

What is the required companion board to operate EVLPOWERSTEP01?

The STEVAL-PCC009V2 communication board is mandatory for operation. It converts USB commands from ST's evaluation software into SPI signals, enabling configuration of microstep mode, acceleration profiles, current limits, and diagnostic registers. Without it, the board cannot be initialized or controlled.

Does EVLPOWERSTEP01 support standalone step/direction control?

No. The board lacks native STEP/DIR hardware interface; all motion control is performed exclusively via SPI commands. Real-time stepping requires host MCU firmware that sends timed register writes for speed ramping, position tracking, and status polling - no pulse-train input is accepted.

Can EVLPOWERSTEP01 drive unipolar stepper motors?

No. It is designed only for bipolar stepper motors with dual-H-bridge topology. Unipolar motors require center-tapped windings and different switching patterns incompatible with the powerSTEP01's current-controlled, full-bridge architecture and sensing scheme.

How is thermal performance managed on this board?

The board uses copper-pour thermal pads under both power bridges and incorporates 4-layer PCB stack-up with internal ground/power planes. Thermal derating begins above 60 °C ambient; sustained 10 A r.m.s. operation requires ≥200 LFM airflow or heatsink mounting to the MOSFET source pads as specified in AN4691.