STSPIN32F0251QTR

Application Specific Microcontrollers Overview

The STSPIN32F0251QTR is a system-in-package integrating an STM32F031 MCU and a 250 V triple half-bridge gate driver. It features an ARM Cortex-M0 core operating up to 48 MHz with 32 kB Flash and 4 kB SRAM. The gate driver supports N-channel MOSFETs or IGBTs with source/sink currents of 200 mA / 350 mA. Key electrical parameters include a high-voltage rail up to 250 V, dV/dt immunity of ±50 V/ns, and a gate driving voltage range of 9 V to 20 V. The device operates within an extended temperature range of -40 °C to +125 °C.

Application Specific Microcontrollers Feature Summary

• Integrated 250 V triple half-bridge gate driver with integrated bootstrap diodes
• ARM Cortex-M0 MCU with up to 48 MHz clock frequency
• SmartSD comparator for fast overcurrent protection
• UVLO, interlocking, and deadtime functions

Application Specific Microcontrollers Applications

• Home and industrial refrigerator compressors
• Industrial drives, pumps, and fans
• Air conditioning compressors and fans
• Corded power tools and garden tools
• Home appliances and industrial automation

Application Specific Microcontrollers Procurement Notes

Verify the package type matches the design requirements, as the STSPIN32F025x family includes both TQFP and QFN options. Confirm that the specific ordering suffix corresponds to the desired packaging format. Ensure all unused GPIO pins are configured in output mode low level after startup by software to prevent floating inputs.

Application Specific Microcontrollers Selection Notes

Select the STSPIN32F0251 variant when source/sink currents of 200 mA / 350 mA are sufficient for the target power stage. Consider the STSPIN32F0252 if higher drive currents of 1 A / 0.85 A are required. Verify that the application voltage does not exceed the 250 V rail limit and that the logic input levels are compatible with the 3.3 V MCU supply.

Application Specific Microcontrollers Part Context

This component belongs to the STSPIN32F025x series, which provides highly integrated solutions for three-phase motor control. The series combines an STM32 microcontroller with a high-voltage gate driver to reduce PCB area and bill of materials. Other variants in the family include the STSPIN32F0252 and different package options like the STSPIN32F0251Q.

Application Specific Microcontrollers Replacement Considerations

Public confirmed substitute part numbers: STSPIN32F0252QTR (higher current capability), STSPIN32F0251Q (different package).

Application Specific Microcontrollers FAQ

How does the SmartSD function protect against overcurrent?

The SmartSD comparator triggers immediately upon detecting an overload on the CIN pin, forcing all gate driver outputs to a low state. This minimizes propagation delay compared to standard fault handling.

What is the purpose of the OD pin?

The OD pin is an open-drain output connected to the SmartSD logic. It discharges an external capacitor to set the duration of the output disable time following a fault event.

Can the device drive IGBTs?

Yes, the integrated triple half-bridge gate driver is capable of driving both N-channel power MOSFETs and IGBTs.