Buck converter
Fairchild Semiconductor has introduced a synchronous buck converter chip set designed specifically to optimize efficiency and space in notebooks.
has introduced a synchronous buck converter chip set designed specifically to optimize efficiency and space in notebooks using the latest IMVP (Intel Mobile Voltage Positioning) specifications.
The chip set comprises the high-side "control" MOSFET ( FDS6298) and the low-side "synchronous" MOSFET ( FDS6299S).
The FDS6299S device’s monolithic SyncFET technology eliminates the need for an external Schottky diode, resulting in board space savings and reduced assembly costs.
This integrated chip set features a very low Qgd or "Miller" charge for fast switching speeds as well as a Qgd / Qgs ratio of less than 1 to limit the potential for cross conduction losses. In addition to Vcore designs, the fast-switching FDS6298 and the low RDS(on) FDS6299S offer benefits as a matched pair that are suited for high current point-of-load (POL) converters in such applications as high-end communications equipment.
Key performance characteristics of the FDS6298 (high-side) MOSFET include:
Key performance characteristics of the FDS6299S (low-side) MOSFET include:
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