POWERSTEP01TR - 10A 85V Stepper Motor Driver SPI | STMicro
MPN: POWERSTEP01TR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.46 | $6.46 |
| 10 | $5.85 | $58.50 |
| 100 | $5.25 | $525.00 |
| 500 | $4.8 | $2,400.00 |
| 1,000 | $4.5 | $4,500.00 |
POWERSTEP01TR Overview
A stepper motor driver is a power management device that converts digital step and direction commands into precisely sequenced phase currents in a bipolar stepper motor. Within the motion control hierarchy, it sits between the host MCU and the motor windings, replacing discrete gate drivers, MOSFET bridges, and current-sense circuitry with a single SPI-configurable IC.
Key features include full digital motion control through speed profile generation and positioning calculations performed on-chip, SPI programmability of all operating parameters, an operating supply range of 7.5 V to 85 V, and up to 10 A output current capability. The integrated 16 mOhm MOSFETs minimize conduction losses, while advanced current control and protection features (overcurrent, thermal) improve system reliability.
Technically, the powerSTEP01 executes microstepping current control autonomously, offloading the host processor from real-time phase sequencing. The SPI interface allows configuration of step mode, phase current, acceleration and deceleration profiles, and stall/limit thresholds, simplifying firmware compared to external-step-input drivers.
Typical applications include CNC machines, 3D printers, industrial automation, robotics, and textile or packaging machinery, wherever high-current bipolar stepper motors require quiet, accurate microstepping under MCU supervision.
Design consideration: the 89-VFQFPN package dissipates significant power at 10 A; the exposed pad must be soldered to a large copper pour or heatsink, and thermal performance must be validated at maximum load.
This page adds value beyond the datasheet by synthesizing distributor pricing, package data, and application guidance in one reference.
Drop-in alternatives for POWERSTEP01TR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with POWERSTEP01TR (same form factor and footprint) — differing in Control Interface, MOSFET On-Resistance, Motor Type, Package, Product Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
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View Datasheet →POWERSTEP01TR Maximum Ratings & Electrical Characteristics
| Motor Type | Stepper (Bipolar) |
| Number of Outputs | 1 (dual H-bridge for one stepper) |
| Output Current | 10 A |
| Supply Voltage Range | 7.5 V to 85 V |
| MOSFET On-Resistance | 16 mOhm (integrated N-channel) |
| Number of Integrated MOSFETs | 8 N-channel |
| Control Interface | SPI |
| Control Architecture | Microstepping controller with speed profile generation and positioning calculations |
| Package | VFQFPN-89 (11x14 mm) |
| Mounting Type | Surface Mount |
| Product Type | System-in-package motor driver |
| RoHS Status | Compliant |
POWERSTEP01TR vfqfpn-89 (11x14 mm) Pin Configuration Guide
Pin configuration for POWERSTEP01TR (vfqfpn-89 (11x14 mm) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for POWERSTEP01TR.
Refer to the datasheet for full pin configuration.
Safe Operating Area (POWERSTEP01 integrated MOSFET bridge)
Typical Applications
POWERSTEP01TR is suitable for 6 applications: CNC Machine Axis Drive, 3D Printer Motion System, Industrial Automation and Robotics, Textile and Packaging Machinery, Security Camera Positioning (PTZ), Medical Laboratory Automation.
CNC Machine Axis Drive
CNC routers and mills demand high-torque stepper drive at elevated bus voltages to reach rapid traverse speeds. The POWERSTEP01TR fits this role because its 7.5 V to 85 V supply range allows 48 V or 70 V bus designs, and its 10 A output covers NEMA 34-class motors that smaller drivers cannot handle. The on-chip microstepping engine generates trapezoidal speed profiles autonomously, so the host controller issues only target positions over SPI, reducing firmware complexity and jitter. The integrated 16 mOhm MOSFETs limit conduction losses at high phase currents, but designers must budget for the resulting dissipation with solid thermal design. Compared with external gate-driver + MOSFET stacks, the single-package solution shrinks the power stage BOM and improves phase-current matching between the two windings.
Recommended
3D Printer Motion System
Large-format and industrial 3D printers benefit from the POWERSTEP01TR's high-current drive and quiet microstepping. Its 85 V capability supports high bus voltages that keep current regulation stable at fast print-head speeds, while the autonomous speed profile generator produces smooth acceleration ramps that reduce layer shifts and lost steps. The SPI interface lets firmware tune phase current and step mode per axis, adapting torque to nozzle load. Integrated protections (overcurrent and thermal) safeguard the power stage during hot-end jams or mechanical binding. Compared to typical 2 A printer drivers, the 10 A rating enables heavier gantries and dual-Z configurations from a single IC per axis. Thermal design with the exposed pad soldered to generous copper is essential in enclosed printer chambers where ambient temperatures are elevated.
Recommended
Industrial Automation and Robotics
Factory automation pick-and-place units, textile machines, and packaging lines use bipolar steppers where repeatability and uptime matter. The POWERSTEP01TR integrates the full motion-control chain - microstepping controller, power MOSFETs, and positioning calculations - in one 89-VFQFPN package, reducing component count versus discrete solutions and improving reliability by minimizing solder-joint and connector count. Its 10 A rating and 85 V ceiling cover demanding axes such as gantry lifts and conveyor indexers. On-chip speed profile generation offloads the PLC companion MCU, and SPI diagnostics support condition monitoring. Estimated power dissipation at full 10 A load requires a thermally engineered PCB; in industrial enclosures with restricted airflow, derating or heatsinking should be validated against the manufacturer's thermal guidance in the powerSTEP01 datasheet.
Recommended
Textile and Packaging Machinery
Textile winding heads and packaging indexers run steppers continuously at significant phase current, where conduction losses dominate. The POWERSTEP01TR's 16 mOhm integrated MOSFETs reduce I^2R losses compared to higher-Rdson integrated drivers, improving efficiency in multi-axis machines where every watt counts toward enclosure heat budget. The 85 V supply capability enables higher back-EMF margins at winding speed. Because the microstepping engine runs autonomously, a low-cost MCU can supervise many axes over SPI, which suits the multi-axis architecture of these machines. Built-in overcurrent and thermal protections help meet machine-safety expectations during jams. Designers should validate duty cycle against package thermal limits using the exposed-pad copper pour or an attached heatsink per the datasheet layout recommendations.
Recommended
Security Camera Positioning (PTZ)
Pan-tilt-zoom surveillance mechanisms require precise, quiet stepper positioning with enough torque for outdoor housings and wind loads. The POWERSTEP01TR's autonomous microstepping delivers vibration-free motion that keeps video stable during repositioning, and its SPI-configurable speed profiles enable fast preset transitions without overshoot. The 10 A capacity covers large outdoor PTZ units that smaller drivers stall, while the 85 V range supports 24 V or 48 V actuator buses common in perimeter security installations. Integrated protections guard against wind-induced stalls. The device is over-specified for compact indoor domes - lower-current ST drivers like powerSTEP11 or L6470 fit those better - but for heavy-duty outdoor positioners the POWERSTEP01TR provides headroom and single-chip integration that reduces mechanism PCB area.
Recommended
Medical Laboratory Automation
Sample handling, liquid dispensing, and autofocusing stages in laboratory analyzers use precision bipolar steppers where repeatable microstepping and low vibration are essential for assay accuracy. The POWERSTEP01TR's on-chip positioning calculations produce deterministic motion that supports repeatable pipetting and plate indexing, while autonomous profile execution keeps timing consistent even on low-cost control MCUs. Its 10 A rating covers heavy Z-axis lift stages carrying robotic arms; most XY stages will run well below this, giving wide margin. SPI configurability allows firmware to trade speed for smoothness per movement type. Given medical duty cycles and enclosure constraints, estimated dissipation at sustained high current must be thermally validated per the powerSTEP01 datasheet layout and heatsinking guidance before design freeze.
Recommended
Recommended Products Summary
Engineering reference data for POWERSTEP01TR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | POWERSTEP01 |
|---|---|---|
| Package | VFQFPN-89 (11x14 mm) | VFQFPN-89 (11x14 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics |
| Supply Voltage Range | 7.5 V to 85 V | 7.5 V to 85 V |
| Output Current | 10 A | 10 A |
| MOSFET On-Resistance | 16 mOhm | 16 mOhm |
| Control Interface | SPI | SPI |
| Packaging Format | Tape & Reel (TR) | Tray |
Key Differentiators
- Highest integration in ST stepper portfolio (vs L6470)
- 85 V supply headroom (vs powerSTEP11)
- Tape-and-reel availability (vs POWERSTEP01)
Design Notes
The 89-VFQFPN (11x14 mm) exposed pad is the sole thermal path for the integrated MOSFETs. Estimated: at 10 A phase current with 16 mOhm on-resistance and two devices conducting, conduction loss is roughly 3.2 W per phase before switching losses, so junction temperature management dominates the design. Solder the exposed pad to a multi-layer copper pour (at least 2 oz copper with thermal vias to backside ground plane) and validate with the thermal guidance in the powerSTEP01 datasheet. For sealed enclosures, consider forced airflow or a heatsink at sustained loads above a few amps.
Route the power stage (VM, OUT1A/OUT1B/OUT2A/OUT2B) with wide, short traces and place bulk electrolytic plus ceramic decoupling directly at the VM pins to absorb phase-current switching transients at up to 85 V. Keep the sense elements and gate-drive loops tight. Separate the SPI and logic ground return from high-current paths to avoid injected noise corrupting serial communication. Follow the ST datasheet PCB layout example for the VFQFPN-89 footprint and thermal-via pattern.
Do not exceed the 85 V absolute maximum supply - transients from motor back-EMF during abrupt deceleration can spike the bus, so include a brake/clamp network or TVS on the supply rail. Because the motion engine runs autonomously from SPI commands, ensure firmware correctly initializes registers at power-up before issuing run commands. Also confirm cable inductance on long motor leads; add ferrite or RC snubbers if EMI issues appear on the SPI bus.
Compliance Information
RoHS compliance and lead-free status per ST product positioning for active products; REACH, halogen-free, and conflict mineral statuses not stated in retrieved data - verify via ST environmental certificates.
