STEVAL-PCC020V1 USB to I2C/UART Bridge Evaluation Board for HVDPS STNRG011

The STEVAL-PCC020V1 tool interfaces any Windows ® based PC with HVDPS products such as the STNRG011. It is basically a bidirectional bridge between the USB and I²C/UART buses. The STEVAL-PCC020V1 is self-powered with 5 V from the USB port. An isolated DC-DC module provides the correct power supply for the remaining electronics. The board is also able to provide the VCC voltage to the target STNRG device to program the NVM (if the supply voltage is below 17 V). The communication between the STEVAL-PCC020V1 and the PC is managed by a standard serial peripheral, converting the USB connection to a virtual COM port. The UART RX and TX signals are then isolated with optocouplers and connected to the STM32 microcontroller, so that the USB port and the rest of the board remain isolated from the power supply. The microcontroller handles the bridging between the host UART and the target UART/I²C bus and protocol. Key Features Bidirectional communication between PC (USB) and STNRG011 Self-powered via USB line On-board 19 V generation for STNRG011 programming Galvanic isolation between USB and other board electronics One I²C bus running at 400 kHz One UART bus running at 19200bps UART and I²C bus multiplexed together on the same interface On-board firmware upgrade via USB port Display of power indicators (AC voltage, PFC power) Access to STNRG M24C32E²PROM (for storing patch, calibration and event history data) Programming of NVM settings RoHS compliant