STEVAL-ISA172V2 (STMICROELECTRONICS)

The STEVAL-ISA172V2 is a 2KW fully digital AC to DC power supply (D-SMPS) evaluation board. It consisting of 2 power sections, a two phase interleaved power factor corrector (PFC) and a DC to DC phase shifted full-bridge converter, controlled by a STM32F334 microcontroller for each section. The interleaved PFC comprises 2 boost converters operating with 180° out of phase, based on 600V MDmesh M2 power MOSFETs. The downstream section comprises of a DC to DC phase shifted full-bridge converter based on MDmesh DM2 Power MOSFETs and performing voltage step down using HF transformer with a primary to secondary ratio chosen to maintain high enough efficiency and regulation over entire operating range. On primary side transformer is supplied by full-bridge converter and switching losses are reduced. On secondary side synchronous rectification (SR) is used to ensure low conduction losses. The output voltage waveform is rectified by STripFET Power MOSFETs and then smoothed by output filter.