L6564D Просмотр технического описания (PDF) - STMicroelectronics

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L6564D

10 pin transition-mode PFC controller

STMicroelectronics 

L6564

1

Description

Description

The L6564 is a current-mode PFC controller operating in transition mode (TM) and

represents the compact version of L6563S as it embeds the same driver, reference and

control stages in a very compact 10 pin SO package.

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. The loop 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").

In addition to overvoltage protection able to control the output voltage during transient

conditions, the IC also provides protection against feedback loop failures or erroneous

settings. Other on-board protection functions allow brownout conditions and boost inductor

saturation to be safely handled.

The totem-pole output stage, capable of 600 mA source and 800 mA sink current, is suitable

for high power MOSFET or IGBT drive. This, combined with the other features and the

possibility to operate with ST's proprietary fixed-off-time control, makes the device an

excellent solution for SMPS up to 400 W that require compliance with EN61000-3-2 and

JEITA-MITI standards.

Doc ID 16202 Rev 1

5/34

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