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.