PSU Design

Part 21 of the uSupply USB power supply design. An update on where the project got to and why. A look at the working unit, PCB and schematic. Design series Playlist: https://www.youtube.com/playlist?list=PLE37A0E6F75C37452 Forum: https://www.eevblog.com/forum/blog/eevblog-1561-usupply-usb-power-supply-part-20/ Podcast: Download

A brief look at how LLC resonant mode converters work and their advantages. A spin-off from the Rohde & Schwarz NGP800 power supply video. Application note: https://www.infineon.com/dgdl/Application_Note_Resonant+LLC+Converter+Operation+and+Design_Infineon.pdf?fileId=db3a30433a047ba0013a4a60e3be64a1 Podcast: Download

Dave & David installing the software required for the uSupply development. Yep, one whole hour of installing software, for all you software installation aficionados. Microsoft Visual Studio Code, cMake, Ninja, OpenOCD, and ST ARM programmers. Doxygen and how to do automatically documenting code. Forum: https://www.eevblog.com/forum/blog/eevblog-1264-usupply-software-development-setup/ Podcast: Download

Circuit building block time. The capacitance multiplier and how it gives almost negligible power supply ripple compared to a voltage regulator. Whiteboard theory and then some bench demonstrations and experiments. Plus a twist at the end that proves that the “Capacitance multiplier” is perhaps one of the most mis-named circuits …

Dave shows you how to setup, measure and generate an Efficiency vs Load Current characteristic curve for a DC-DC converter, just like you see in the datasheets. Several traps for young players are discussed, along with plotting Logarithmic axis charts in a spreadsheet. Electronic Load Kit BM235 Multimeter: http://amzn.to/2hJp78T Rigol …