This schematic is all you need to build your own voltage converter. [Lutz] needed a converter that could boost 5 V to 30 V to power a string of LEDs. The solution was to use low cost ATtiny85 and ...

Rather than having an external boost converter to produce enough volts, this design adds just two mosfets and an inductor to the Class-D output structure (see diagram) to make it self-boosting for ...