STMicroelectronics POWERSTEP01TR

Overview

POWERSTEP01TR from STMicroelectronics is a system-in-package stepper motor driver integrating an SPI-programmable microstepping controller and eight 16 mΩ N-channel MOSFETs in a dual full-bridge configuration, supporting 7.5–85 V motor supply, 10 ARMS continuous output current, up to 1/128 microstepping, and sensorless stall detection for closed-loop positioning without external sensors.

For engineers reviewing the POWERSTEP01TR datasheet, POWERSTEP01TR pinout, POWERSTEP01TR application, or POWERSTEP01TR equivalent, this device serves as a complete motion control solution for industrial automation, robotics, and precision camera positioning-requiring no external gate drivers, current sense amplifiers, or motion profile generation logic.

Technical Context

The POWERSTEP01TR implements a fully digital motion control core with on-chip acceleration/deceleration calculation, absolute 22-bit position tracking, and programmable speed profiles via SPI registers. Its dual full-bridge supports both voltage-mode and current-mode driving, with configurable deadtime (125–4000 ns) and blanking (125–1000 ns) for robust MOSFET switching.

Integrated protections include non-dissipative overcurrent detection (programmable 27–1100 mV threshold), thermal warning (135 °C) and shutdown (155 °C bridge / 170 °C device), UVLO on VCC (6.3–10.9 V), VBOOT (5.5–9.94 V), and VREG (2.4–3.18 V), plus motor stall detection via VDS sensing on all four low-side sources.

Key Specifications

Pinout & Package

VFQFPN package, 11 mm × 14 mm, 64-pin with exposed thermal pad (EPAD1–EPAD13). All VS pins (1, 2, 3, 4, 5, 6, 23–32, 43–52, 66–71, 72–75, 86–89) must be shorted externally for low-impedance motor return path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar stepper motor driver applications.

Compared with TMC5160-BOB and DRV8825, POWERSTEP01TR delivers the highest integration level-combining controller, gate drivers, MOSFETs, regulators, and protection in one VFQFPN-enabling single-chip motion solutions with deterministic stall response and no external current sense components.

Availability

POWERSTEP01TR is available at Aetrix Electronics and suitable for industrial process automation, medical analysis equipment, and robotics requiring stable component supply, long-term lifecycle support, and traceable sourcing for ISO 13485 and IEC 62304 compliance.

Supply support for POWERSTEP01TR 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 microcontrollers, power ICs, sensors, and analog/mixed-signal products for industrial, automotive, and consumer markets.

The powerSTEP product line targets intelligent motion control applications, integrating high-voltage power stages with embedded motion engines to eliminate external control logic and simplify stepper system design.

FAQ

What is the maximum motor supply voltage supported by POWERSTEP01TR?

The POWERSTEP01TR supports a motor supply voltage range of 7.5 V to 85 V, with absolute maximum rating of 95 V on the VS pin. Operation above 85 V violates recommended conditions and risks premature thermal shutdown or overvoltage lockout activation, especially under high-current or elevated-temperature conditions.

Does POWERSTEP01TR require external current sense resistors?

Yes-external 0.1 Ω shunt resistors (RSENSEA/RSENSEB) are required for current-mode operation and stall detection. The device uses these resistors to measure low-side V_DS and feed analog signals into SENSEA_S/SENSEB_S pins; no internal current sense amplifier is provided, making external resistors mandatory for closed-loop control.

How does the sensorless stall detection work?

Stall detection monitors V_DS across each low-side MOSFET during conduction. When motor load exceeds torque capability, back-EMF collapse causes V_DS to rise above the programmed STALL_TH threshold (31–1000 mV). The internal comparator triggers a flag within 530 ns, enabling immediate motion halt without encoder feedback or external circuitry.

Can POWERSTEP01TR operate without an external crystal or oscillator?

Yes-the device includes a factory-trimmed 16 MHz internal oscillator, allowing full functionality without external timing components. OSCIN/OSCOUT can be left unconnected; OSCOUT provides a buffered 2/4/8/16 MHz clock output for synchronizing other system peripherals when internal oscillator is active.