The ON Semiconductor NCP1651DR2 is a highly integrated power factor correction (PFC) controller designed for use in a variety of applications that require efficient power conversion and power factor improvement. This advanced controller is specifically engineered to deliver continuous conduction mode (CCM) PFC, ensuring that energy consumption is optimized for applications ranging from consumer electronics to industrial systems.

With its ability to operate under a wide supply voltage range, the NCP1651DR2 is versatile and robust, making it suitable for universal AC input systems. The controller integrates a number of features to enhance system reliability and performance, including soft-start capabilities, which prevent current surges during startup, and brown-out protection, which safeguards the system against drops in input voltage.

The NCP1651DR2's innovative design includes a frequency foldback technique that reduces audible noise and minimizes electromagnetic interference (EMI), a critical consideration for applications that demand quiet operation and compliance with regulatory standards. Additionally, the controller's dynamic response to load variations ensures stable operation across a range of conditions, contributing to the longevity of the end product.

One of the key advantages of the NCP1651DR2 is its high power factor, which can exceed 0.99, leading to reduced reactive power and thus lower electricity costs. This is particularly beneficial for applications with stringent energy efficiency requirements. Furthermore, the controller's total harmonic distortion (THD) is minimized, which improves the quality of power delivered to the load and reduces stress on the electrical infrastructure.

For designers and engineers, the NCP1651DR2 simplifies the development of PFC circuits by integrating critical functions and protections. Its compact SOIC-8 package allows for a smaller PCB footprint, enabling the design of more compact and cost-effective power supplies. Whether it's for LED lighting, AC-DC adapters, or high-power applications, the NCP1651DR2 is a reliable choice for advanced PFC solutions.

Key Features:

• Continuous Conduction Mode (CCM) PFC Control
• Wide Supply Voltage Range
• Soft-Start and Brown-Out Protection
• Frequency Foldback for Reduced EMI and Audible Noise
• High Power Factor and Low THD
• Dynamic Response to Load Variations
• Compact SOIC-8 Package