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NCP1654——安森美电源功率因素控制方案
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2011-11-30
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The NCP1654 is a controller for Continuous Conduction Mode(CCM) Power Factor Correction step−up pre−converters. It controlsthe power switch conduction time (PWM) in a fixed frequency modeand in dependence on the instantaneous coil current.Housed in a SO8 package, the circuit minimizes the number ofexternal components and drastically simplifies the PFCimplementation. It also integrates high safety protection features thatmake the NCP1654 a driver for robust and compact PFC stages likean effective input power runaway clamping circuitry.
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