A look at a 10 MHz converter
The demo circuit, basically the components seen on the top-left of the board, use The TPS54A20 two-phase, synchronous series capacitor buck converter working from a 12-V input rail. This topology merges a switched-capacitor circuit with a two-phase buck converter. Advantages include automatic current balancing between the inductors, lower switching losses which enable high frequency (HF) operation, and voltage step-down through the series capacitor. An adaptive on-time control architecture provides fast transient response and accurate voltage regulation at up to 10-MHz operating frequency.
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