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NCP1380

Part Number	NCP1380
Manufacturer	ON Semiconductor
Description	Quasi-Resonant Current Mode Controller
Published	Feb 8, 2010
Detailed Description	NCP1380 Quasi-Resonant Current-Mode Controller for High-Power Universal Off-Line Supplies The NCP1380 hosts a high−perf...
Datasheet	NCP1380 PDF File

Overview

NCP1380 Quasi-Resonant Current-Mode Controller for High-Power Universal Off-Line Supplies The NCP1380 hosts a high−performance circuitry aimed to powering quasi−resonant converters.
Capitalizing on a proprietary valley−lockout system, the controller shifts gears and reduces the switching frequency as the power loading becomes lighter.
This results in a stable operation despite switching events always occurring in the drain−source valley.
This system works down to the 4th valley and toggles to a variable frequency mode beyond, ensuring an excellent standby power performance.
To improve the safety in overload situations, the controller includes an Over Power Protection (OPP) circuit which cla...

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