https://www.futureelectronics.com/m/power-integrations , LinkSwitch-XT2SR family of offline switcher ICs with integrated Synchronous Rectification are perfect for non-isolated flyback designs up to 15 W. With no-load consumption of just 0.005 W (50 mW), LinkSwitch-XT2SR ICs easily surpass the requirements of the European Union’s Energy-Related Products (ErP) Directive for standby power consumption. https://youtu.be/Ngqh_GpomC0