Transcription of Phase-Shifted Full Bridge DC/DC Power Converter Design …
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Phase-Shifted Full Bridge DC/DC Power Converter Design …
Phase-Shifted full Bridge DC/DC Power Converter Design Guide Abstract The phase shifted full Bridge (PSFB) Converter is used for DC-DC conversion in various applications, for example in telecom systems to convert a high voltage bus to an intermediate distribution voltage, typically closer to 48V. PSFB stage provides voltage translation as well as isolation from the line voltage, since this topology includes a transformer. This document presents the implementation details of a digitally controlled PSFB system implemented on the HVPSFB kit from Texas Instruments. This kit converts a 400V DC input to a regulated 12V DC output and is rated for operations up to 600W. Both peak current mode control (PCMC) and voltage mode control (VMC) implementations are described. These highly integrated microcontroller based realizations feature adaptive zero voltage switching (ZVS) and various synchronous rectification schemes, which are discussed here.
electronics are energized, indicating operation of accessible high voltages may be present, for the purpose of protecting inadvertent access. (d) All interface circuits, power supplies, evaluation modules, instruments, meters, scopes and other related apparatus used in a development environment exceeding 50Vrms/75VDC must be
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