Power control systems and power control devices may include a power control chip having a power control module configured to generate a power stage control signal, and an external power stage having a timing control module. The timing control module may be configured to receive the power stage control signal and generate a timing control signal controlling at least one switch to regulate an output voltage of the external power stage. The power control device further includes an auto-configuration module configured to communicate with the external power stage and request auto-configuration information from the external power stage. A related method of auto-configuring a power control system includes communicating auto-configuration information between at least one external power stage of a power control system and a power control chip, and configuring a setting of the at least one external power stage of the power control system based on the auto-configuration information.