NCP1252EDR2G ON AC DC Converters, Offline Switchers

The NCP1252EDR2G from onsemi is a highly integrated PWM controller for cost-effective, high-efficiency off-line power supplies. For selection, its key flexibility lies in supporting both flyback and forward topologies, with a wide 9V–28V VCC range and up to 500kHz switching frequency. The built-in 14V startup circuit, soft-start, and frequency control simplify design. Its 45.6% duty cycle suits single-ended converters, while timer-based current limiting replaces an auxiliary winding for enhanced protection without extra cost. In application, it excels as the core controller in AC-DC adapters for notebooks and monitors, open-frame SMPS for set-top boxes, and chargers for power tools. Its ability to drive a high-voltage external MOSFET makes it perfect for industrial motor drive auxiliary supplies, home appliance controls, and smart lighting systems where reliable, compact, and energy-efficient power conversion is crucial. In stock at HL Electronics – request a quote for fast delivery.