L6563/L6563A are ST's advanced transition-mode PFC controllers, featuring very precise adjustable output overvoltage protection, tracking boost function, protection against feedback loop failure (Latched shutdown), interface for cascaded converter's PWM controller, input voltage feedforward (1/V2), inductor saturation detection (L6563 only), remote ON/OFF control, low (≤ 90µA) start-up current, 5mA max. quiescent current, 1.5% (@ TJ = 25°C) internal reference voltage, -600/+800 mA totem pole gate driver with active pull-down during UVLO.
The L6563 and L6563A are current-mode PFC controllers operating in Transition Mode (TM), designed for PFC pre-regulators in AC-DC adapters, desktop PCs, and servers. The L6563 offers improved performance with a highly linear multiplier and special correction circuits to reduce crossover distortion, enabling wide-range mains operation with low Total Harmonic Distortion (THD). It includes features such as very precise adjustable output overvoltage protection, tracking boost function, and protection against feedback loop failure. The L6563A is similar but lacks the inductor saturation detection function found in the L6563.
| Supply voltage operating range | 10.3 to 22 V |
|---|---|
| Start-up current | ≤ 90 µA |
| Quiescent current | ≤ 5 mA |
| Internal reference voltage accuracy | 1.5% @ 25°C |
| Gate driver peak source current | 600 mA |
| Gate driver peak sink current | 800 mA |
| Junction temperature operating range | -25 to 150 °C |
| Maximum thermal resistance junction-ambient | 120 °C/W |
The L6563 includes inductor saturation detection, while the L6563A does not.
The device is suitable for EN61000-3-2 compliant SMPS in excess of 350W.
It is used for PFC pre-regulators in HI-END AC-DC adapters, desktop PCs, and servers.