IPU and the project "TinyPower"
Smaller power supplies has been demanded for intelligent electronics as thermostats, liquid pumps, wall switches and movement sensors for light control, alarm and surveillance systems, and computer/cell phone battery chargers. Unfortunately power supply technologies are behind due to the problem with limited lifetime of capacitors.
IPU has been involved in a project “TinyPower” funded by Danish Innovationsfonden which aimed to develop a miniaturized integrated power supply converting from 230V to 12V with high frequency switch mode. IPU had a role to develop electroplating processes for MEMS fabrication of micro air-cores as integrated inductor together with DTU Danchip. The process consists of coating on silicon wafer, etching of the wafer, and copper electroplating of the through-silicon-vias with high aspect ratio of 10:1.
TinyPower project group was interviewed by TV2 Lorry in 2018 February. See the video “The smallest power supply in the world: Proud researchers behind breakthroughs”. (in Danish) https://www.tv2lorry.dk/lyngby-taarbaek/verdens-mindste-stromforsyning-stolte-forskere-bag-gennembrud