SMPS
Switching power supply are divided into four categories: PFC circuits, LLC, Flyback, Forward
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EV Charger
A DC charging post usually consists of three main components: a three-phase PFC front-end, a DC-DC converter stage, and an auxiliary power supply. For these different topologies, we recommend using different series of VAST MOS products to optimize performance: Three-phase Vienna PFC front end, DC-DC converter stage, AUX Flyback
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PV Inverter
Inverter circuits are the key technology for converting DC power to AC power and are widely used in fields such as photovoltaic power generation, UPS, motor drives and welding equipment. Typical inverter circuits include DC-DC boost (required for some applications), full-bridge inverter and output filtering.
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Quick Chargers
A typical fast charging system mainly consists of a high efficiency AC-DC converter and a precise voltage regulation circuit. At its core is a high-frequency switching power supply, which usually adopts a quasi-resonant topology such as LLC or active clamped flyback structure to achieve high efficiency and miniaturization and EMI control.The selection of power MOSFETs is critical in such applications.
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OBC
A typical OBC consists of several key stages including AC-DC rectification, PFC and DC-DC conversion. High efficiency, high power density and reliability are the core objectives of OBC design. In the PFC stage, Boost or Totem-Pole topologies are commonly used, while LLC resonant or phase-shifted full-bridge topologies are commonly used in the DC-DC stage.VAST SEMI offers a wide range of high performance power devices for OBC.
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