NCP1653AP

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Power Factor Correction (PFC) is a method of increasing the power factor of a load by reducing the reactive component of the load current by providing energy that is purely real. The most commonly used type of PFC is active PFC, where electronic systems are used to compensate for the reactive component of the load current. The NCP1653AP is a synchronous rectifier controller designed primarily to provide active PFC for AC/DC power supplies.

The application field of NCP1653AP is mainly used for AC/DC power supplies, uninterruptible power supplies, DC/DC converters, lighting ballasts, motor drives, and portable battery-operated systems. In all of these applications, the NCP1653AP can be used to control the switching of a synchronous switch to ensure efficient, multi-mode operation. This is the result of the NCP1653AP’s dynamic turn-on speed, where it can quickly synchronize with the current waveform and reduce losses when switching from one mode of operation to another.

The NCP1653AP works on the principle of active PFC, where a power factor correction circuit is used to reduce the reactive component of the load current. The circuit works by calculating the required current based on the input voltage and the power draw of the load. This calculation is then used to produce a reference voltage that corresponds to the correct phase and magnitude of the current. The reference voltage is used to control the switching of a synchronous switch, which results in a power factor of higher than 0.9.

The NCP1653AP also includes programmable safety features for protection against overvoltage, overcurrent, and overtemperature conditions. These features are in place to protect the system from damage due to improper operation. The controller can also be configured for single-phase and three-phase PFC systems, making it suitable for a wide range of applications.

The NCP1653AP is designed to be used in tandem with a number of synchronous rectifier power stages, such as the NCP5042A, NCP5044A, NCP5048A, NCP5050A, NCP5054A, and NCP5060A. These ICs are designed to provide multi-mode operation and high efficiency, along with a range of programmable features.

In summary, the NCP1653AP is an ideal solution for a number of AC/DC applications in need of active PFC. It is capable of quickly synchronizing with the current waveform and providing accurate power factor correction, with programmable safety features for protection against overvoltage, overcurrent, and overtemperature conditions. The device can also be configured for single-phase and three-phase PFC systems, making it suitable for a variety of applications. The NCP1653AP can be used in tandem with a range of synchronous rectifier power stages for efficient multi-mode operation.

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