STMicroelectronics L6566A Manuals

AN2941 is an application note released by ST company, which mainly introduces the application characteristics of L6563S and L6566A two chips, suitable for 75W adapter design. This application note introduces the characteristics of the two chips, circuit principle, efficiency measurement, harmonic content measurement and function check.

L6566A is a multi-mode controller for switch mode power supplies (SMPS) with PFC front-end. It features selectable multi-mode operation, on-board 700V high-voltage start-up, advanced light load management, low quiescent current, adaptive UVLO, etc.

L6566A is a multi-mode controller from STMicroelectronics, suitable for SMPS power supplies with PFC front-end.

The L6566A is a multi-mode controller for SMPS with PFC front-end. It offers multiple selectable operation modes including fixed frequency and quasi-resonant mode. It also features 700 V high-voltage startup, advanced light load management, low quiescent current (< 3 mA), adaptive UVLO, line feedforward for constant power capability vs. mains voltage, pulse-by-pulse OCP, shutdown on overload (latched or autorestart), transformer saturation detection, switched supply rail for PFC controller, latched or autorestart OVP, brownout protection and a -600/+800 mA totem pole gate driver with active pull-down during UVLO.