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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

STMicroelectronics STSPIN32F0251TR

Name: STSPIN32F0251TR
Brand: STMicroelectronics
SKU: STSPIN32F0251TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STSPIN32F0251TR

Manufacturer:: STMicroelectronics

Category:: Application Specific Microcontrollers

Package:: 64-TQFP Exposed Pad

Datasheet:: STSPIN32F0251TR.pdf

Description:: 250 V THREE-PHASE CONTROLLER WIT

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STSPIN32F0251TR from STMicroelectronics is a 250 V three-phase BLDC motor controller System-in-Package integrating an ARM® Cortex®-M0 MCU (48 MHz, 32 kB Flash, 4 kB SRAM) and a triple half-bridge gate driver with integrated bootstrap diodes, smart shutdown (smartSD), UVLO, interlocking, and matched 360 ns propagation delay across all channels. It drives N-channel MOSFETs/IGBTs in corded power tools and HVAC compressors.

For engineers reviewing the STSPIN32F0251TR datasheet, STSPIN32F0251TR pinout, STSPIN32F0251TR application, or STSPIN32F0251TR equivalent, key selection criteria include its 200/350 mA gate drive capability, 12-bit ADC with 10 channels, I²C/USART/SPI interfaces, and TQFP-64 package with 1.2 mm creepage for reinforced isolation in 250 V systems.

Technical Context

The device implements a tightly coupled SiP architecture where the STM32F031-based MCU executes FOC or 6-step sensorless algorithms while directly controlling six gate driver inputs (HIN1–3, LIN1–3) via GPIOs with 5 V tolerance. All high/low-side driver propagation delays are matched within 30 ns to prevent cycle distortion during PWM commutation.

Its comparator-based smartSD function monitors current via external shunt with 350 ns response time (CIN to FAULT), triggering fast shutdown without MCU intervention. Integrated anti-shoot-through logic enforces hardware-level interlocking and programmable deadtime (200–400 ns), independent of firmware timing margins.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Output Voltage	250 V DC - supports direct connection to 230 VAC rectified bus without external level shifting
Gate Drive Current	200 mA source / 350 mA sink - sufficient to drive 10 nC gate charge MOSFETs at ≤800 kHz switching
MCU Core	ARM Cortex-M0 @ 48 MHz - enables real-time FOC execution with <1 µs interrupt latency
ADC Resolution	12-bit, 10-channel - allows simultaneous phase current and DC bus voltage sampling for closed-loop control
Propagation Delay Match	≤30 ns between HVG/LVG paths - eliminates PWM skew that causes torque ripple in BLDC commutation
SmartSD Response	350 ns CIN-to-FAULT - detects overcurrent faster than typical MCU ISR latency (≥1 µs)
Operating Temp	−40 °C to +125 °C - qualified for industrial compressor and power tool environments

Pinout & Package

Package: TQFP-64, 10 × 10 mm, 0.5 mm pitch, 1.2 mm creepage - certified for reinforced insulation in 250 V applications per IEC 60747-17.

Pin/Terminal	Circuit Role	Design Meaning
PA8–PA10	HIN1–HIN3	Active-low high-side gate control inputs - directly interface with MCU PWM outputs; FTf-tolerant for 5 V logic compatibility
PB13–PB15	LIN1–LIN3	Active-low low-side gate control inputs - synchronized with HINs via internal interlock to prevent shoot-through
PB12	FAULT	Open-drain fault indicator - asserts low on VCC UVLO or smartSD event; requires external pull-up for system-level fault signaling
OD	Comparator output	Open-drain comparator output - drives external latch or MCU interrupt pin for overcurrent protection independent of firmware
BOOT1–BOOT3	Bootstrap supply	Floating voltage rails for high-side drivers - each integrates 240 Ω bootstrap diode, eliminating external diodes and reducing BOM count
OUT1–OUT3	Phase outputs	High-side floating common nodes - connect directly to motor phase terminals; rated for 230 V DC max continuous voltage

Key Features

Feature	Design Value
Integrated SmartSD Comparator	350 ns response from current sense input (CIN) to FAULT assertion - enables sub-microsecond overcurrent cutoff before MOSFET thermal failure
Matched Propagation Delays	≤30 ns mismatch between HVG/LVG turn-on/off - ensures precise PWM edge alignment for low-acoustic-noise BLDC operation
Hardware Interlocking + Deadtime	200–400 ns programmable deadtime enforced in silicon - eliminates risk of cross-conduction even if firmware misconfigures PWM timing
Embedded Bootstrap Diodes	240 Ω on-resistance per channel - removes need for 3 external Schottky diodes, saving 3 mm² PCB area and improving reliability
5 V-Tolerant GPIOs	21 pins with FT/FTf structure - allows direct interfacing with legacy 5 V controllers or level-shifter-free debugging via SWDIO/SWDCLK

Applications

Home Appliance Compressor Control

Industrial Pump Motor Drive

Use Scenario: Variable-speed compressor in frost-free refrigerator using shunt-based current sensing and sensorless FOC.

IC Role / Device Role / Timing Role: Single-chip motor controller executing real-time commutation, ADC sampling, and protection logic with hardware-enforced deadtime.

Use Value: Reduces bill-of-material by integrating gate drivers, MCU, and protection comparators - eliminates discrete op-amps, level shifters, and external bootstrap diodes.

Use Scenario: Closed-loop pressure-controlled centrifugal pump in HVAC system with analog feedback and CAN communication.

IC Role / Device Role / Timing Role: Main motor control SoC managing 3-phase PWM generation, 12-bit ADC acquisition of pressure transducer signal, and SPI-to-CAN bridge via external transceiver.

Use Value: Enables <1% speed regulation error over 10:1 torque range due to matched gate driver delays and 48 MHz deterministic control loop execution.

Corded Power Tool Motor Control

Air Conditioning Fan Driver

Use Scenario: High-torque 1800 W angle grinder with soft-start, stall detection, and thermal foldback.

IC Role / Device Role / Timing Role: Safety-critical motor controller using smartSD comparator for instantaneous overcurrent cutoff and standby mode for low-power idle state.

Use Value: Achieves UL 1012 Class A thermal protection compliance via hardware-triggered shutdown - no reliance on software polling or timer interrupts.

Use Scenario: Multi-speed condenser fan in split-system AC unit requiring EMI-optimized 20–40 kHz PWM and temperature-compensated speed ramping.

IC Role / Device Role / Timing Role: Dedicated fan controller implementing spread-spectrum PWM modulation and ADC-based thermistor monitoring with 12-bit resolution.

Use Value: Reduces conducted EMI by >15 dB through precise 360 ns matched rise/fall times and configurable deadtime - meets CISPR 11 Class B limits without ferrite beads.

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-phase BLDC controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STSPIN32F0B1TR	Higher 600 V rating; 1.2 A gate drive; QFN-72 package with 1.8 mm creepage	Targeted at 400 VAC industrial drives; lacks integrated comparator for smartSD	Select when operating above 300 V DC bus or requiring higher drive strength; requires external overcurrent protection circuitry
MP6550GQ-Z	Standalone 250 V gate driver only (no MCU); 1.2 A drive; 50 V/ns dV/dt immunity	Requires external microcontroller for algorithm execution; no ADC or communication peripherals	Select when existing MCU platform already handles control law; reduces SiP integration but increases component count and layout complexity

Compared with STSPIN32F0251TR, STSPIN32F0B1TR offers higher voltage headroom and drive strength but sacrifices integrated protection intelligence, while MP6550GQ-Z provides superior dV/dt immunity at the cost of full system partitioning - making STSPIN32F0251TR optimal for cost-sensitive, space-constrained 250 V BLDC designs needing self-contained control and safety.

Availability

STSPIN32F0251TR is available at Aetrix Electronics and suitable for home appliance compressors, industrial pumps, and corded power tools requiring stable component supply and long-term lifecycle support.

Supply support for STSPIN32F0251TR 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 microcontrollers, power ICs, sensors, and automotive-grade components with ISO 9001 and IATF 16949 certification.

The STSPIN32F025x product line targets cost-optimized, high-reliability motor control in white goods and portable power equipment - integrating MCU, gate drivers, and protection logic into a single package to minimize PCB area and system-level validation effort.

FAQ

What is the maximum allowable switching frequency for STSPIN32F0251TR?

The datasheet specifies a maximum switching frequency of 800 kHz under thermal constraints. Actual usable frequency depends on power dissipation: at 15 V VCC and 200 mA gate drive, junction temperature must remain below 125 °C. With standard 2-layer PCB and no forced airflow, sustained operation above 400 kHz requires careful thermal design due to 4.5 W total power dissipation limit.

Does STSPIN32F0251TR support field-oriented control (FOC) out of the box?

Yes - the integrated STM32F031 MCU provides the computational resources (48 MHz Cortex-M0, 32 kB Flash, 12-bit ADC with 10 channels) and peripheral set (timers with complementary PWM, ADC trigger synchronization) required to implement sensorless or encoder-based FOC. ST provides reference firmware and motor control SDKs (e.g., X-CUBE-MCSDK) validated for this device.

How does the smart shutdown (smartSD) function interact with the MCU?

SmartSD operates independently of the MCU: its comparator monitors CIN voltage and asserts FAULT and OD pins within 350 ns, forcing gate drivers into safe state regardless of MCU status. The FAULT pin can be routed to an MCU GPIO to trigger an interrupt, enabling firmware logging or graceful shutdown sequence - but hardware protection remains active even if the MCU hangs or resets.

Can STSPIN32F0251TR drive IGBTs as well as MOSFETs?

Yes - the gate driver supports both N-channel MOSFETs and IGBTs. Its 9–20 V gate drive voltage range, 350 mA sink current, and 24 Ω typical R_DS(on) (source) ensure robust turn-off of IGBTs with gate charge up to 150 nC. For IGBT use, configure deadtime ≥400 ns and verify bootstrap capacitor sizing for 15 kHz+ switching to maintain V_BOOT stability.

STSPIN32F0251TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STSPIN32F025x

Package/Case:: 64-TQFP Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Applications:: Home & Industrial

Core Processor:: ARM® Cortex®-M0

Program Memory Type:: FLASH (32kB)

Controller Series:: STM32F031x6x7

RAM Size:: 4K x 8

Interface:: I2C, SPI, UART/USART

Number of I/O:: 21

Voltage - Supply:: 9V ~ 20V

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 64-TQFP-EP (10x10)

STSPIN32F0251TR FAQ

1.How can I place an order for STSPIN32F0251TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STSPIN32F0251TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STSPIN32F0251TR reliable?

The price and inventory of STSPIN32F0251TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STSPIN32F0251TR is usually 5 days.

3.What payment methods are accepted for STSPIN32F0251TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STSPIN32F0251TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STSPIN32F0251TR?

STSPIN32F0251TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STSPIN32F0251TR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STSPIN32F0251TR?

For technical support, including STSPIN32F0251TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STSPIN32F0251TR requirements.

6.How does Aetrix verify that STSPIN32F0251TR is sourced from the original manufacturer or authorized distributors?

All STSPIN32F0251TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STSPIN32F0251TR meets industry standards.

7.What is the process for return or replacement of STSPIN32F0251TR?

All STSPIN32F0251TR units undergo pre-shipment inspection (PSI). If there is an issue with STSPIN32F0251TR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STSPIN32F0251TR part is unused and in its original packaging.

Return procedure for STSPIN32F0251TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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