AP1661P-E1

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Power Factor Corrector (PFC) is an essential component of every power system. It helps maintain the power consumption of electronic devices within acceptable limits, and improves the efficiency of the power circuit. The AP1661P-E1 is a PFC controller used in the design and development of digital power systems. This article will discuss the application field and working principle of the AP1661P-E1.

The AP1661P-E1 is a primary side PFC control IC for AC/DC adapters, which provides a high integration level and excellent cost performance. It is compatible with digital applications from start to finish and can be used in various applications such as cell phones, notebook computers, PC monitors, gaming consoles, TV sets and power converters. The device provides a convenient and stable voltage source, efficient power factor correction and low standby power management. It is characterized by low component count, low output voltage ripple, low temperature rise, low standby power and high system reliability.

The AP1661P-E1 integrates a power factor controller, an high voltage start-up circuit and a standby control circuit, all in one IC. The power factor controller uses a control loop that adjusts the input current in order to maintain an optimal power factor. The high voltage start-up circuit initializes the power circuit, and the standby control circuit reduces the overall standby power consumption. The AP1661P-E1 provides a built-in limiting function which prevents the input current from exceeding a certain level and thus protecting the power system from overload.

AP1661P-E1 is designed for high current/high power applications. It can be used in various single-stage or two-stage power supply designs up to 360W. The device supports a wide range of input voltages and is compatible with a wide range of MOSFETs; it has an adjustable switching frequency and a wide output voltage range. It also provides protection against input voltage transient. In addition, the device supports leading edge blanking (LEB) to reduce EMI, as well as pre-bias start-up and slow start-up mode. Besides, the device suppresses switching noise and short-circuit protection. This makes the device suitable for use in a number of power systems.

Power factor correcting circuits based on the AP1661P-E1 have improved efficiency and have become increasingly popular in the design of numerous power systems. The device is designed to be used in conjunction with an external MOSFET and requires no external components. In addition, it provides a range of features such as over-voltage protection, reverse current protection, output voltage voltage compensation and temperature protection.

In conclusion, the AP1661P-E1 is a powerful, cost-effective PFC controller for AC/DC adapters. Its low component count, low output ripple voltage and low standby power consumption make it an ideal solution for various applications. In addition, its features like pre-bias start-up, slow start-up mode, wide input voltage range and overload protection make it extremely suitable for use in high-power systems. Overall, the AP1661P-E1 is an excellent choice for power factor correction in power systems.

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