Boost Converter with Capacitive Boost Stages

An apparatus includes an inductor coupled between an input voltage node and a switching node. The switching node selectively enables the inductor to generate a voltage on the switching node based on a voltage on the input voltage node. The apparatus includes a passive circuit configured to generate an intermediate voltage on an intermediate node with respect to a reference voltage and based on the voltage on the switching node. The apparatus includes a boost circuit configured to generate an output voltage on an output node referenced to the intermediate voltage, the output voltage has a magnitude with respect to the reference voltage greater than a magnitude of the intermediate voltage with respect to the reference voltage. The boost circuit may include n boost circuit stages, the intermediate voltage may be VI, and the output voltage may be (n+1)×VI with respect to the voltage on the reference node.