At the international IEEE Workshop on Control and Modeling of Power Electronics COMPEL 2025 - a leading forum for modern methods of circuit and system simulation - the IMS-MX presented two papers on the synthesis, modeling and operation of switched-capacitor (SC) DC-DC converters.
SC converters offer a cost-efficient option for voltage conversion, for example for automotive applications. They are characterized by high power densities - especially when combined with resonant concepts. In his paper, Adrian Gehl addressed the question of how resonant SC-DC-DC converters can be operated efficiently over a wide range of output currents without violating the output voltage requirements. The developed models were experimentally validated by measurements on a specially designed IC.
From electric cars and heat pumps to server farms for AI applications - the demand for electrical energy is constantly growing. As a result, the focus is increasingly shifting to efficient energy distribution. In order to minimize line losses, modern systems rely on higher operating voltages - which in turn requires power converters with very high voltage ratios.
The class of multiphase, Fibonacci-based SC converters represents a particularly promising solution. They require the smallest number of flying capacitances for a given transformation ratio - and are therefore particularly compact and efficient. Tim Rambousky's paper presents a newly developed synthesis algorithm that makes it possible to design suitable converter topologies quickly and intuitively - without any time-consuming simulations. The algorithm delivers suitable structures for a wide range of requirements within seconds and opens up new perspectives in the design of energy-efficient high-voltage converters.
The IMS congratulates Adrian Gehl and Tim Rambousky on these successful conference contributions. Both are pursuing their PhD in the Mixed-Signal Circuits (MX) department under the supervision of Professor Wicht.
