Features

• Control board for digital SMPS (PFC converters, HF isolating DC-DC converters,

DC-AC inverters) based on the STM32G474RE microcontroller:

– High-resolution timer (HRTIM) for D-SMPS applications

– Filter math accelerator unit (FMAC) to perform arithmetic operations on

vectors

– Coprocessor (CORDIC) to provide hardware acceleration of trigonometric

functions

• 64-pin DIN 41612 connector for D-SMPS modular approach

• STDC14 programming connector

• Opto-coupled serial communication for board-to-board communication

• RC filters for analog inputs

• Protection of the microcontroller analog lines with diode arrays

• ESD protection on SWD and COM lines

• Adapter board provided for programming and user communication (USART,

CAN, SMBus)

• Supply voltage: 5 V

• Embedded 5 V/3.3 V voltage regulator

• Dedicated test points for debugging

• LED signaling for power-on, faults, errors, and general purpose

• RoHS compliant

Description

The STEVAL-DPSG474 is a digital power supply control kit. It consists of a main

board, based on the STM32G474RE microcontroller from the STM32G4 family, and

an adapter board, which provides different communication interfaces and allows

programming the microcontroller through a standard 20-pin JTAG connector.

The STM32G474RE microcontroller includes the high-performance Arm® Cortex®

M4 32-bit RISC core operating at up to 170 MHz frequency, a floating point unit

(FPU), a full set of DSP (digital signal processing) instructions, and high-speed

embedded memories (512 Kbytes of flash memory and 128 Kbytes of SRAM).

The device embeds peripherals that allow the mathematical/arithmetic function

acceleration (CORDIC for trigonometric functions and FMAC unit for filter functions).

The MCU offers five fast 12-bit ADCs (5 Msps), seven ultra-fast comparators, six

operational amplifiers, seven DAC channels (three external and four internal), a

low-power RTC, 32-bit timers, three timers dedicated to motor control, seven generalpurpose

16-bit timers, one 16-bit low-power timer, and the high-resolution timer

(HRTIM) with 184 ps resolution, specifically designed to drive power conversion

systems.

The main board embeds a standard 64-pin DIN 41612 connector for connection

with a power board. It provides all the PWM control signals, sensing networks, and

protection features needed for a wide range of digital power supply applications.