L6562ADTR Integrated Circuits (ICs)

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PMIC - PFC (Power Factor Correction) with L6562ADTR Application Field and Working Principle

Power Factor Correction (PFC) is a technology used in many modern power applications to improve power efficiency and reduce losses resulting from rectification or conversion of AC to DC power. PFC technology is used to increase the efficiency of power converters and reduce their size and weight, as well as reduce the environmental footprint. The L6562ADTR is a Power Factor Correction (PFC) product from STMicroelectronics that is designed to provide efficient, high-power performance.

The L6562ADTR is an integrated, high-performance, low-EMI PFC device. It combines integrated active and passive components with a power-switching controller that meets the International Energy Agency (IEA) standard EN61000-3-2 class D and CAN/CSA C22.2 No. 247-M83 legislation. Its power-factor correction circuit provides up to 99.9% efficiency and reduces total harmonic distortion (THD) while minimizing EMI filters and components. The power-switching controller integrated in the device supports both voltage mode and current mode control – with a variable frequency control algorithm – for higher power conversion efficiency.

The L6562ADTR features a wide input voltage range of up to 500VRMS - well-suited for universal line applications. It also offers adjustable PFC voltage, adjustable PWM frequency for EMI optimisation, over-voltage and over-temperature protection as well as device diagnostics. The device is available in an SO28 package, and it is suitable for lighting, renewable energy, and home appliance applications.

The working principle of PFC is based on the rectification of the AC voltage. The AC voltage is rectified into a DC voltage that is then regulated. The goal is to create a voltage that will give the most efficient current flow with the lowest amount of reactive power losses. The PFC circuit controls the power factor by controlling the way current is delivered to the load. The L6562ADTR PFC circuit optimizes the energy utilization by using advanced power-switching controller architecture, which allows the circuit to run at constant frequency.

The L6562ADTR offers low EMI compared to other PFC controllers and features high-accuracy feedback for controlling the output voltage and therefore, reduces the all the losses. Furthermore, the device also offers self-protection features and integrated protection from the over-voltage and over-temperature faults. All these features make the L6562ADTR an ideal choice for Power Factor Correction working principles.

The L6562ADTR is a flexible and efficient device designed for power factor correction. The device offers low EMI features, high-accuracy feedback for controlling the output voltage, and integrated protection from over-voltage and over-temperature faults. Its wide input voltage range is suitable for universal line applications and the adjustable PFC voltage and PWM frequency makes it an ideal choice for lighting, renewable energy, and home appliance applications.

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