STMicroelectronics EVSPIN32G4NH

Overview

EVSPIN32G4NH from STMicroelectronics is a heatsink-free evaluation board for three-phase BLDC motor control, integrating the STSPIN32G4 system-in-package (9×9 mm VFQFPN) with embedded STM32G431 MCU and six STL110N10F7 100 V/5 mΩ MOSFETs. It supports input bus voltage from 10 V to 75 V, delivers up to 15 Arms continuous output current at 25°C ambient, and enables sensor-based (Hall/encoder) or sensorless control via configurable shunt sensing.

For engineers reviewing the EVSPIN32G4NH datasheet, EVSPIN32G4NH pinout, EVSPIN32G4NH application, or EVSPIN32G4NH equivalent, this board serves as a complete reference platform for rapid firmware development, gate driver validation, current sensing topology evaluation, and CAN FD-enabled motion system prototyping in power tools, e-bikes, and home appliances.

Technical Context

The EVSPIN32G4NH implements a fully integrated motor control stack: the STSPIN32G4 SoC combines a 170 MHz ARM Cortex-M4F MCU with dual advanced timers (16-bit, 6× PWM each), dual 12-bit ADCs (4 Msps), four 12-bit DACs, and three rail-to-rail op-amps configured for current amplification and overcurrent protection via comparator-triggered shutdown. Its embedded 75 V gate drivers deliver 1 A sink/source per half-bridge with bootstrap diodes and drain-source voltage monitoring on all six MOSFETs.

Power architecture includes a programmable VCC buck converter (200 mA), 3.3 V LDO (150 mA), and low-quiescent standby regulator - all derived from the motor supply - eliminating external bias rails. The board supports three-shunt or single-shunt current sensing, NTC-based thermal monitoring, and Arduino UNO–compatible expansion for MEMS or wireless peripherals.

Key Specifications

Availability

EVSPIN32G4NH is available at Aetrix Electronics and suitable for industrial motor control validation, e-bike controller prototyping, and home appliance BLDC drive development requiring stable component supply and full design-in support.

Supply support for EVSPIN32G4NH 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 analog devices for industrial, automotive, and consumer applications.

The EVSPIN32G4NH belongs to ST's SPIN family of motor control evaluation platforms, engineered to accelerate adoption of intelligent, integrated BLDC solutions in cost-sensitive, thermally constrained applications like cordless power tools and compact home appliances.

FAQ

What is the key difference between EVSPIN32G4 and EVSPIN32G4NH?

The EVSPIN32G4NH is the heatsink-free variant of the EVSPIN32G4 evaluation board. It shares identical circuitry and firmware compatibility but is rated for lower thermal dissipation: 15 Arms continuous (vs. 20 Arms with heatsink) and 25 A peak (vs. 35 A). This makes it ideal for lower-power applications or early-stage thermal profiling where heatsink mounting is deferred.

Does EVSPIN32G4NH support sensorless FOC control?

Yes. The board supports sensorless field-oriented control using the STSPIN32G4's dual 12-bit ADCs (4 Msps), built-in op-amps for shunt amplification, and comparator-based back-EMF zero-crossing detection. Firmware examples for sensorless FOC are provided in ST's X-CUBE-MCSDK v6.x and validated on this hardware.

Can the onboard ST-LINK/V2 program external STM32 targets?

Yes. The ST-LINK/V2 circuit on EVSPIN32G4NH is fully functional as a standalone debugger: its SWDIO/SWCLK pins are routed to a 10-pin connector (J3), enabling programming and real-time debugging of external STM32 MCUs - including other G4-series devices - without requiring a separate probe.

Is CAN FD functionality enabled out-of-the-box?

Yes. The TCAN330D transceiver (U2) is soldered and connected to the STM32G431's CAN peripheral via dedicated RX/TX lines and SHDN control. CAN FD operation at up to 5 Mbps is supported in firmware using HAL_CAN and verified in ST's motor control examples with CAN-based command framing and status reporting.