NCP1654BD65R2G Integrated Circuits (ICs)

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NCP1654BD65R2G is a part of a low-power synchronous internal power factor correction (PFC) controller for AC/DC power systems. This controller is suitable for PFC applications with a wide range of output power from zero to several hundred watts. While providing an efficient and cost-effective solution for saving energy and reducing system cost, it provides stable, reliable operation with high power factor, low harmonic distortion and very low total harmonic distortion (THD).

The NCP1654BD65R2G PFC controller is a low-power, high-efficiency solution for controlling an AC-input voltage. The external load feedback loop maintains an almost constant output voltage. The control amplifiers adjust the external switching device duty cycle to maintain an almost constant output voltage with a low total harmonic distortion (THD) of the output current. The output voltage can be regulated to a set point or ratiometric to the input voltage.

The NCP1654BD65R2G is a single-stage Power Factor Correction (PFC) controller that can operate with a wide range of output powers ranging from zero to several hundred watts. This PFC controller is capable of generating a high power factor and a minimal THD, in order to ensure efficient energy conversion and reduce energy losses. It also utilizes a wide range of low power designs with a wide input voltage range, making it suitable for a variety of AC/DC applications, such as laptop and desktop adapters, TVs, set-top boxes, and other low power devices.

The basic operating principle of the NCP1654BD65R2G PFC controller is the hysteretic control loop in which the current and voltage signals are compared. When the input voltage increases, the output voltage is regulated until it reaches a set point. When the input voltage decreases, the output voltage remains constant. The output voltage is then maintained at the set point despite changes in the input voltage, ensuring a stable and continuous output. The PFC controller also includes an adjustable on- time control (for fast transient response) and an adjustable dead- time control (for noise reduction).

The NCP1654BD65R2G PFC controller is suitable for a variety of AC/DC applications that require a high power factor and low total harmonic distortion. It provides an efficient, cost-effective solution for reducing energy consumption and reducing system cost. In addition, it offers reliable and stable operation with minimal audible noise, making it an ideal choice for a wide range of applications requiring optimal energy conversion and low THD.

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