Patent ID: 6917123

Claim:
A power-up control circuit for controlling the initial application of power to a system having multiple loads and multiple load voltage requirements, comprising: a feedback regulator associated with each load, connected between the load and its voltage supply signal, each regulator operable to deliver an output voltage signal to the associated load and to control the voltage of that output signal by limiting the voltage to the level of a setpoint signal; a voltage finder operable to receive output voltage signals from the feedback regulators, to determine the setpoint signal by finding the minimum voltage level of these signals, and to deliver the setpoint signal to each feedback regulator circuit; and a cutout circuit interposed between the output of each feedback regulator and the voltage finder, operable to compare the associated output voltage signal to a reference endpoint representing the voltage required by the associated load, and to cut out the associated voltage output signal from the voltage finder when the voltage delivered to the associated load reaches the reference endpoint.