Hi, Mohamed,
Thank you for reaching to us. I have found some AN if this is what you are looking for,
https://e2e.ti.com/blogs_/archives/b/smartgrid/posts/cap-drop-offline-power-supply-for-light-load-applications-made-simple?keyMatch=CAP%20DROP .
https:…
Other Parts Discussed in Thread: PMP9311 Hi All,
We are designing Cap Drop Power Supply design on PMP9311 based ref design. It is able to generate 3.3V out on DC/DC Converter on load.We are putting of 40mA at 230VAC, After putting 40mA load the output of…