L6563HTR

STMICROELECTRONICS  L6563HTR  芯片, PFC 控制器, 1MHZ, 22.5V, SOIC-16

The is a current-mode Power Factor Controller operating in transition mode, which embeds the same features existing in the L6563S with the addition of a high voltage start-up source. These functions make the IC especially suitable for applications that have to be compliant with energy saving regulations and where the PFC pre-regulator works as the master stage. The highly linear multiplier, along with a special correction circuit that reduces crossover distortion of the mains current, allows wide-range-mains operation with an extremely low THD even over a large load range. The output voltage is controlled by means of a voltage-mode error amplifier and an accurate 1% @Tj=25°C internal voltage reference. Loop"s stability is optimized by the voltage feedforward function 1/V2 correction, which in this IC uses a proprietary technique that considerably improves line transient response as well in case of mains both drops and surges "bidirectional".

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Tracking boost function

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Fast bidirectional input voltage feedforward 1/V² correction

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Interface for cascaded converter"s PWM controller

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Remote ON/OFF control

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Accurate adjustable output overvoltage protection

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Protection against feedback loop disconnection latched shutdown

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Inductor saturation protection