ON Semiconductor NCP1653P Power Factor Correction Controller

The NCP1653P from ON Semiconductor is a highly integrated and efficient Power Factor Correction (PFC) controller designed for use in compact and robust Continuous Conduction Mode (CCM) PFC circuits. This advanced IC is engineered to meet stringent power supply requirements, ensuring that electronic devices operate with an improved power factor and reduced Total Harmonic Distortion (THD).

With its cutting-edge features, the NCP1653P enhances the performance of power supplies in a wide range of applications, including televisions, desktop computers, servers, and other high-power consumer electronics. Its primary goal is to shape the input current wave to mimic the input voltage wave, thus achieving near unity power factor and optimizing the energy consumption from the power grid.

Key Features of the NCP1653P:

• Continuous Conduction Mode (CCM): Optimized for CCM operation, the NCP1653P delivers stable and efficient performance even under varying load conditions.
• High Integration: The controller integrates functions such as the startup current source and the PFC boost diode, reducing the number of external components required and simplifying the design process.
• Current Sensing: An innovative current-sensing technique eliminates the need for an external sense resistor, further simplifying the design and reducing power loss.
• Protection Features: The device includes various protection features such as overvoltage, undervoltage, and overcurrent protections, ensuring the reliability and safety of the power supply.
• Frequency Modulation: To minimize Electromagnetic Interference (EMI), the NCP1653P incorporates frequency modulation, spreading the EMI energy over a broader spectrum.

The NCP1653P is available in an 8-pin PDIP package, making it easy to integrate into various PCB layouts. It is designed for direct control of the PFC boost stage's MOSFET, and its internal circuitry is optimized to minimize power consumption during no-load or standby conditions, contributing to the overall energy efficiency of the end application.

By choosing the NCP1653P for your power supply design, you can expect a high-performance solution that meets the demands of modern energy-saving regulations while providing a cost-effective and compact PFC control option.