L6562D

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The power factor correction (PFC) market has seen strong growth in recent years thanks to the increasing demand for higher energy efficiency by the energy-saving machines, such as reduced energy consumption, total cost savings, and efficient power management for charge points and residential areas. The L6562D is a high performance controller IC with integrated power factor correction (PFC) and is suited for CV/CC (constant voltage and constant current) topology. The L6562D has two power MOSFET drivers and two current sense amplifiers. It is suitable for AC/DC applications and can be used in switching power supplies such as AC/DC adapter, LED lighting, home appliances and embedded systems.

The L6562D works by modulating the power switch waveform so as to keep the current flowing through the primary winding of an isolated transformer close to sinusoidal waveform. This phase modulation decreases the harmonic content of the voltage waveform to maintain a power factor of > 0.95. It also increases the input power factor and reduces the total harmonic distortion of the current waveform. The main advantages of the L6562D are reduced energy consumption and improved power management, as well as faster and more precise control.

The L6562D contains a linear regulator that allows the user to adjust the output voltage of the switching power supply. This regulator can be used to adjust the output voltage and provide a precise, stable and low-noise voltage reference. The L6562D also has a wide range of PFC settings such as tap-compensation, overcurrent protection and soft-start, which makes it suitable for a variety of applications.

The L6562D also provides excellent efficiency performance by minimizing the losses associated with the PFC controller. This is achieved by a switching frequency that follows the line voltage, as well as an optimized dead-time control. In addition, the frequency jittering technique reduces EMI and improves the power factor significantly.

The L6562D also offers low-cost, space-saving designs in a very small package. It is available in DIP-8, DPAK-8 and space saving DFN-14 packages, making the L6562D ideal for cost-sensitive, space-constrained applications.

In conclusion, the L6562D is a versatile and cost-effective PFC controller with a high performance and wide range of features. Its integrated linear regulator, improved efficiency and rugged construction make it ideal for use in a wide range of AC/DC applications.

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