Description

STEVAL-PCC019V1

2/11

DocID027093 Rev 1

1

Description

digitally trimmable products like the SEA01 constant voltage and current controller with

online digital trimming from STMicroelectronics. It functions basically as a bidirectional

SEA01-based power supplies without the need for external instruments (such as supply,

voltmeter, active load).

The STEVAL-PCC019V1 is self-supplied via the 5 V from the USB connector.

Three isolated DC-DC modules are used to provide the correct supplies to the remaining

parts of the board, maintaining the isolation between the PC and target sides.

enough to program NVM (in cases where the supply is < 17 V).

Communication between the STEVAL-PCC019V1 and the PC is managed by a standard

serial peripheral, converting the USB connection into a virtual COM port.

The RX and TX signals are then isolated using opto-couplers and connected to the STM32

microcontroller, ensuring that the USB port and the remaining parts of the board are isolated

from the mains.

The microcontroller is the heart of the system, and it is in charge of performing conversion

allowing bidirectional communication between the PC and the target device.

one of which is also isolated from the 2 others (depending on whether the SEA01 is put on

primary or secondary). This allows trimming of the SEA01 in various configurations (primary,

secondary side), or even multiple SEA01 chips.

A companion evaluation board (STEVAL-ISA161V1) which includes the SEA01 as

secondary side CV/CC controller can be interfaced with the STEVAL-PCC019V1 to test the

benefits of digital trimming in a real application.