Converters 508-514 are controlled by at least power controller 516. In some embodiments, the system may also contain a second power controller, power controller 518. Power controller 516 may operate during steady-state operation, whereas power controller 518 may operate during periods of high-transient voltage. Power controller 518 may be configured to override the output of power controller 516 in situations in which a voltage change is greater than a voltage change threshold. For example, in some embodiments power controller 516, which may be a steady-state controller, may make a voltage-control decision at the beginning of each steady-state cycle. Power controller 518, which may be an oversampling controller, however, may make a preliminary decision at each oversampling cycle. This preliminary decision may be whether or not to override the contemporaneous or most-recent decision made by the controller 516. This may be based on whether a voltage change is above a voltage-change threshold. For example, controller 518 may determine to override a voltage-change decision that controller 516 is currently making (e.g., in an instance in which the beginning of the current oversampling cycle occurs at the same time as the beginning of the current steady-state cycle), to override a voltage-change decision that controller 516 already made (e.g., in an instance in which the beginning of the current oversampling cycle occurs after the beginning of the current steady-state cycle), or to defer to the voltage-change decision of controller 516.