NCP1653APG

Frequency - Switching:	60.3kHz ~ 73.7kHz
Voltage - Supply:	8.75 V ~ 18 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-PDIP
Base Part Number:	NCP1653
Series:	--
Packaging:	Tube
Part Status:	Not For New Designs
Mode:	Continuous Conduction (CCM)

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NCP1653APG Application Field and Working Principle

Power Factor Correction (PFC) refers to techniques used in electrical power systems to raise the power factor of an AC power system closer to 1 or unity. In power control systems, power factor correction is important because it reduces the harmonic content of the line current and improves the efficiency of the system. One of the most commonly used PFC power controllers is the NCP1653APG.The NCP1653APG is a current-mode, peak current-mode, power factor controller specifically designed to provide high-performance and easy-to-implement solutions. This IC supports a wide range of output power and is suitable for a variety of power supply applications such as high-brightness LED, low power adapter, and low/medium power drum machine.The NCP1653APG is comprised of several features which are inspired by conventional PFC controllers. First, it features a proportional-integral (PI) controller for constant-current control for high line and low line operation. It also has a peak current-mode control (PCM) for optimizing the switching loss and maintaining PFC efficiency. Additionally, it has a comprehensive clock generator in order to allow for high-speed operation and low component-count design.In addition to its features, the NCP1653APG also comes with simplified system calibration. This calibration scheme utilizes a soft-start switch timer and allows for quick and accurate control during start-up. It also supports programmable maximum power limit (MPL) implementation which allows the user to set the limit based on the optimal efficiency.The NCP1653APG can be used to achieve excellent power conversion efficiency at all load levels with minimal design effort. It also offers an easy solution for line-dimming and improved EMC performance. Furthermore, its flexible protection architecture includes programmable fault counter, open-loop detection, over voltage protection, and brown-out modes.The NCP1653APG utilizes a high-frequency oscillator module to control the switching frequency in constant-frequency mode. This oscillator can be set to a user-selectable fixed frequency or can be sensed from the power line for a frequency transient mode. It also implements adaptive non-overlap control to minimize switching losses and EMI emissions.To summarize, the NCP1653APG is a high-performance power factor controller designed to efficiently convert AC power into DC power with minimal design effort. It features a proportional-integral controller for constant-current control, peak current-mode control for optimizing switching losses, an internal clock generator for improved system performance, simplified system calibration, and programmable MPL limit. Its flexible protection architecture includes fault counter, open-loop detection, and brown-out modes. Finally, it utilizes a high-frequency oscillator module to control the switching frequency, and adaptive non-overlap control to minimize switching losses and EMI emissions.

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