Power factor correction controllers
1 June 2005
Power Electronics / Power Management
ON Semiconductor introduced two new power factor correction (PFC) controllers at the Applied Power Electronics Conference. The NCP1653 and NCP1601 controllers are designed for use in power supplies with input levels between 75 W and several kilowatts (kW), suitable for PFC in power supplies found in TVs, flat-screen monitors, PC desktop and notebook adapter SMPS, and white goods. The NCP1653 is a fixed-frequency, current-mode PFC controller designed to efficiently drive continuous conduction mode (CCM) boost converters with mid-to-high power needs (100 W to 3 kW). The NCP1601 is a controller designed for PFC boost circuits in the lower power ranges (up to 300 W). It operates in either fixed-frequency discontinuous conduction mode (DCM) and/or variable frequency critical conduction mode (CRM) and takes advantage of the best features of both modes.
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