STMicroelectronics STSPIN958TR

Overview

STSPIN958TR from STMicroelectronics is a 5 A full-bridge motor driver IC for brushed DC motors, operating up to 58 V supply voltage with typical R_DS(ON) of 165 mΩ per MOSFET and integrated current-sense amplifiers (gain = 10 V/V). It supports seven configurable driving modes-including dual half-bridge, single full-bridge, and parallel half-bridge-and delivers precise high-frequency PWM control for industrial motion systems.

For engineers reviewing the STSPIN958TR datasheet, STSPIN958TR pinout, STSPIN958TR application, or STSPIN958TR equivalent, key selection criteria include adjustable slew rate (0.3–2 V/ns), fixed OFF-time or PWM-trimming current limiting, thermal shutdown at 150 °C, and dual low-side current sensing with OFFSET-enabled level shift-critical for closed-loop torque control in compact motor drives.

Technical Context

The STSPIN958TR integrates two independent NMOS half-bridges with matched propagation delays (≤300 ns) and built-in dead-time to prevent shoot-through. Its charge pump (VSPUMP/CP1/CP2/CBOOT) enables high-side gate drive up to 61.4 V, while UVLO protection activates below VS = 5.05 V and VBOOT = 2 V.

Current regulation uses either fixed OFF-time (set by ROFF/COFF on TOFF pin, 1–500 µs range) or PWM trimming mode, with decay selection (slow or mixed) determined by MODE3 and PWM2/PH logic states. Amplifier outputs V1/V2 provide real-time sensed current with 200 ns settling time and ±150 mV input step capability.

Key Specifications

Pinout & Package

STSPIN958TR is housed in a thermally enhanced 32-pin HTSSOP package (exposed EPAD) with 0.65 mm pitch, optimized for high-current motor drive thermal performance and PCB copper pour integration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar full-bridge motor driver applications.

Compared with TB6612FNG and DRV8876N, the STSPIN958TR uniquely combines 58 V operation, seven driving modes, embedded current sensing, and adjustable slew rate-making it the only option supporting scalable brushed motor control across industrial, commercial, and outdoor equipment without external support ICs.

Availability

STSPIN958TR is available at Aetrix Electronics and suitable for stage lighting, factory automation, and antenna control systems requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability testing.

Supply support for STSPIN958TR 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, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The STSPIN portfolio targets intelligent motor control applications, with the STSPIN958TR specifically engineered for high-voltage, high-current brushed DC motor drives demanding precision, flexibility, and integrated protection in space-constrained environments.

FAQ

What is the minimum recommended bootstrap capacitor value for STSPIN958TR?

The datasheet specifies CBOOT = 1 µF as the minimum value required to sustain high-side gate drive during continuous PWM operation at 500 kHz. Using a ceramic X7R capacitor rated for ≥25 V ensures stable VBOOT regulation and avoids premature UVLO due to insufficient charge pump replenishment under high-duty-cycle conditions.

Can STSPIN958TR drive a 48 V, 3.5 A brushed DC motor without external heat sinking?

Yes-under natural convection with a 4-layer PCB featuring ≥200 mm² exposed copper on the EPAD, thermal resistance drops to ~17.4 °C/W (RthJB). At 3.5 A and 48 V, power dissipation is ~0.4 W, resulting in <10 °C junction rise above ambient-well within the 150 °C thermal shutdown threshold.

How does the OFFSET pin affect current sensing accuracy?

When OFFSET is high, the internal op-amp output (V1/V2) shifts by VDD/2, enabling bidirectional current measurement across the shunt resistor. This eliminates the need for external level-shifting circuitry and preserves 10-bit ADC resolution when interfacing with 3.3 V microcontrollers.

Is it safe to change MODE1–MODE3 pins dynamically during operation?

No-the datasheet explicitly prohibits switching driving modes mid-operation. Doing so may cause undefined bridge states, shoot-through, or latch-up. MODE pins must be set at power-on and held static; reconfiguration requires a full device reset via nSTBY or power cycle.