STEVAL-DPSG474 Digital Power Supply Control Kit

STMicroelectronics' STEVAL-DPSG474 digital power supply control kit consists of a main board based on an STM32G4 family microcontroller and an adapter board with communication and programming interfaces. The STM32G474RE MCU features a high-performance Arm® Cortex®-M4 core, a floating point unit (FPU), a full set of digital signal processing (DSP) instructions, and high-speed embedded memories.

The device embeds peripherals for mathematic and arithmetic function acceleration [coordinate rotation digital computer (CORDIC) for trigonometric functions and filter math accelerator (FMAC) unit for filter functions]. The MCU offers a host of performance peripherals, including multiple fast ADC and DAC channels, as well as general-purpose and dedicated timers such as the high-resolution timer for driving 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.

An external 5 V supply voltage can supply the board through either a dedicated or main connector. The adapter board features a configurable user communication (SMBus, CAN, or RS-232) with two DB9 connectors and the appropriate transceiver ICs, a standard STDC14 14-pin connector, which provides the SWD interface for debugging and USART communication for user interface (UI), and the standard JTAG connector for programming .

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
  • FMAC unit to perform arithmetic operations on vectors
  • 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