L6563 and L6563A are advanced transition-mode PFC controllers with features like precise adjustable output overvoltage protection, tracking boost function, protection against feedback loop failure, interface for cascaded converter's PWM controller, input voltage feedforward, inductor saturation detection (L6563 only), remote ON/OFF control, low start-up current, etc. They are suitable for applications such as high-end AC-DC adapter/charger, desktop PC, server, WEB server, IEC61000-3-2 or JEIDA-MITI compliant SMPS with power exceeding 350W.
The L6563 and L6563A are current‑mode PFC controllers that operate in transition mode, offering precise voltage regulation, low start‑up current, and built‑in protection features such as over‑voltage and feedback‑loop failure detection. The L6563 includes an additional inductor‑saturation detection function that the L6563A does not provide.
The device provides a totem‑pole gate‑driver capable of 600 mA source and 800 mA sink currents, remote ON/OFF control pins, and an interface for cascaded PWM controllers, making it suitable for high‑power SMPS applications up to 350 W.
| Supply voltage range | 10.3 V – 22 V |
|---|---|
| Quiescent current | 3 mA – 5 mA |
| Gate‑driver source current | 600 mA |
| Gate‑driver sink current | 800 mA |
| Maximum thermal resistance (junction‑ambient) | 120 °C/W |
| Operating temperature range | -25 °C to 150 °C |
The L6563 includes an inductor‑saturation detection function that stops the PFC stage if the boost inductor saturates; this function is not present in the L6563A.
A voltage below 0.52 V on the RUN pin shuts down the IC (non‑latched) and reduces consumption; the IC restarts when the voltage rises above 0.6 V.
The gate‑driver can sink up to 800 mA.