onsemi PWM-Controller 750 kHz 0,5 A, 1 A.

The NCP1399 is a high performance current mode controller for half bridge resonant converters. This controller implements 600 V gate drivers, simplifying layout and reducing external component count. The built−in Brown−Out input function eases implementation of the controller in all applications. In applications where a PFC front stage is needed, the NCP1399 features a dedicated output to drive the PFC controller. This feature together with dedicated skip mode technique further improves light load efficiency of the whole application.

Optimize for physical size or highest efficiency
Built-in safety protection, improved transient response
Improved efficiency
Applications:
High power AC/DC adapters for notebooks
Offline battery chargers
Industrial and medical power sources
Computing power supplies