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

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

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400V 3.3kW Bi-directional Phase Shift Full Bridge with 600 V CoolMOS™ CFD7 and XMC™
Application Circuit: Buck Converter Mode (MOSFET Paralleling)


This board achieves 98% efficiency in buck mode. Nominal input voltage of the converter is 400 V.
The converter starts to operate at 375 V with a hysteresis window up to 415 V and down to 350 V.
The attained power density is in the range of 4.34W/cm³ (71.19W/in³), which is enabled by the
use of SMD packages and the innovative stacked magnetic construction. 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.

Evaluation Board: EVAL_3K3W_BIDI_PSFB
Product Info: BSC098N10NS5
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