Multi-stage power supply with fast transient response

An electronic circuit, comprising:

• a first stage switch coupled between an electric power source and a first upstream node associated with a first inductor;
• a first capacitor coupled to a first downstream node associated with the first inductor;
• a second stage switch coupled between the first downstream node and a second upstream node associated with a second inductor;
• a current parking switch coupled between a second downstream node associated with the second inductor and a second capacitor at an output node;
• and
• a controller circuit configured to:
• cause the first stage switch to adjust a first current within the first inductor based on a first voltage associated with the first downstream node and a first desired voltage;
• cause the second stage switch to adjust a second current within the second inductor based on an average value for an output voltage associated with the output node and a second desired voltage, wherein an average current in the second inductor is greater in magnitude than a supply current provided to the output node;
• and
• cause the current parking switch to further adjust the second current by enabling the second current to flow to either the output node or ground based on the output voltage and the second desired voltage.