Commersiallization of high frequency power supplies
| Reference number | |
| Coordinator | SEPS TECHNOLOGIES AB |
| Funding from Vinnova | SEK 700 000 |
| Project duration | December 2011 - April 2013 |
| Status | Completed |
Purpose and goal
The goal with the project was to realize prototypes of complete converter for use eg for laptops charger where the dimensions is a key selling point. The project aimed also to establish the first client relations for SEPS Technologies for this type of application. Both of these objectives have been met and SEPS has in the last year working with a major supplier of consumer electronics to develop the next generation of power converter.
Results and expected effects
The project has developed converter with efficiency up to 94% DC/DC efficiency at 3MHz. Furthermore, EMI filter is designed to reduce noise, electronics that powers converter itself and manage the progress on boot before the converter generates its own power and a control loop that handles variations in input voltage and load while maintaining output voltage. 600V GaN transistors is delayed so the design is limited to 120V AC but the project shows that with the coming of transistors it is possible to realize compact converter that works in MHz range.
Approach and implementation
Early in the project the focus was to establish contact with a larger player in need of voltage converters in the range of 50-100W in order to have a sharp specification working against. When this was successfully accomplished, the project has the character focused on technology development to meet the given specification in terms of safety, electromagnetic compatibility, efficiency and size. This part has been very time consuming but also very useful to approach a market.