400 V 3.3 kW bi-directional Phase Shift Full Bridge (PSFB) Topology using 600 V CoolMOS™ CFD7 and XMC™ (Overview)

Open online SPICE simulator circuit link: power_400VDC_SMPS_bi-directional_PSFB_buck_boost_overview.tsc

400V 3.3kW Bi-directional Phase Shift Full Bridge with 600 V CoolMOS™ CFD7 and XMC™
Overview Circuit: Boost- and Buck Converter Mode

This evaluation board introduces a highly efficient complete Infineon system solution
for a 3300W bi-directional DC-DC converter targeting telecom, battery formation
power and industrial robotics applications. Infineon’s 600V CoolMOS™ CFD7 super
junction MOSFET in ThinPAK package is the most recent and best performance fast
body diode device. Combined with a low parasitic package and an optimized layout,
it achieves great performance with minimum stress. The innovative cooling concept
presented in this board enables its remarkable performance. This board achieves 98%
efficiency in buck mode and 97% in boost mode. When combined with the latest
technologies from Infineon, this DC-DC converter proves the feasibility and high efficiency
of PSFB designs at the level of fully resonant topologies. The EVAL_3K3W_BIDI_PSFB
shows as well that the PSFB topology can be used as a bi-directional DC-DC stage
without changes in the standard design or construction of a traditional and well known
topology. This is achieved thanks to innovations in control techniques powered by digital
control and XMC™ microcontrollers.