STMicroelectronics STEVAL-DPSG474

Overview

STEVAL-DPSG474 from STMicroelectronics is a digital power supply control kit built around the STM32G474RE microcontroller, featuring a 170 MHz Arm® Cortex®-M4 core with FPU, 512 KB Flash, 128 KB SRAM, HRTIM (184 ps resolution), CORDIC coprocessor, and FMAC filter accelerator. It supports PFC, isolated DC-DC, and DC-AC inverter control via 12 PWM outputs, five 12-bit ADCs (5 Msps), seven comparators, six op-amps, and seven DAC channels.

For engineers reviewing the STEVAL-DPSG474 datasheet, STEVAL-DPSG474 pinout, STEVAL-DPSG474 application, or STEVAL-DPSG474 equivalent, this kit enables rapid prototyping of digitally controlled power converters with opto-isolated serial communication, DIN 41612 modular interface, CAN/USART/SMBus adapter options, and full SWD/JTAG debug support.

Technical Context

The STEVAL-DPSG474 implements a dual-board architecture: a main control board hosting the STM32G474RET6 MCU and an adapter board providing configurable user interfaces (CAN, RS-232, SMBus) and programming access. The MCU's HRTIM drives high-frequency switching with sub-nanosecond timing precision, while CORDIC and FMAC offload real-time trigonometric and FIR/IIR filtering computations required for closed-loop digital power control.

Analog signal conditioning includes RC-filtered ADC inputs, diode-array protected analog lines, ESD protection on SWD/COM lines, and dedicated test points. Power delivery uses embedded 5 V/3.3 V regulation, with external 5 V input supported via dedicated connector or DIN 41612 interface. Isolation is achieved via ACSL-6210 optocouplers for UART and discrete opto-coupled serial links between control boards.

Key Specifications

Availability

STEVAL-DPSG474 is available at Aetrix Electronics and suitable for digital power supply development, telecom rectifier design, and server PSU validation requiring stable component supply, full debug visibility, and production-ready firmware deployment pathways.

Supply support for STEVAL-DPSG474 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, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

The STEVAL-DPSG474 belongs to ST's digital power evaluation platform family, engineered specifically to accelerate adoption of STM32G4-based digital control in AC-DC, DC-DC, and motor-driven power conversion systems.

FAQ

What interfaces does the STEVAL-DPSG474 support for host communication?

The STEVAL-DPSG474 supports opto-isolated UART, CAN 2.0B (via SN65HVD232D transceiver), SMBus, and RS-232 through its adapter board. Communication is configurable via jumpers and DB9 connectors, with dedicated SWD and JTAG headers for debugging and programming.

Does the kit include firmware or reference software?

Yes - ST provides the X-CUBE-DIGITALPOWER software package, including HAL drivers, HRTIM configuration utilities, CORDIC/FMAC examples, and ready-to-run digital PFC and LLC control algorithms compatible with STM32CubeIDE.

Can the STEVAL-DPSG474 be used standalone without the adapter board?

No - the adapter board is required for programming (JTAG/SWD), user communication (CAN/RS-232/SMBus), and power sequencing. The main board lacks onboard USB or serial interface circuitry and relies on the adapter for all external connectivity.

What protection features are implemented on analog and digital lines?

Analog inputs feature RC filters and diode-array clamping (ESDALC6V1W5); SWD and COM lines include ESD protection per IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact); CAN bus has termination resistors and transceiver-level fault tolerance.