Multi Output Three Level Buck Converter

A power converter can include a charge pump that receives an input voltage and generates a flying rail voltage therefrom and a plurality of buck converters configured to generate regulated voltages from the flying rail voltage. A symmetric controller can have an outer control loop configured to regulate the flying rail voltage and a plurality of inner control loops in communication with the outer control loop and configured to control the plurality of buck converters to generate regulated output voltages responsive to one or more signals received from the outer control loop. The outer loop can be configured to include a hysteretic controller. The outer control loop can be further configured to provide a signal to the plurality of inner control loops indicating whether the inner control loops should control respective buck converters to charge or discharge a capacitor supporting the flying rail voltage.