The power management landscape is in constant change and with system complexities continuing to increase, so do the power management requirements. Portable applications no longer have straight forward power architectures which can supply the core from the battery in a centralized fashion. New features like flash drivers, built-in projectors, communication processors such as GSM modem and application specific processors require a larger number of high power rails. A new challenge that arises from these new features is the higher peak to average power demand that some of them drive. One example is the GSM modem, which goes into 2A pulses while transmitting and stays at mA current levels when no transmission occurs. All these changes happen within applications where space is of great concern and extra features must not drive increased end application size. Some of the applications that use these new features in are: UMPC, MID, Digital Media Players, Cellular Phones/Smartphones, DSC, Camcorder, Industrial Metering Equipment, PDAs or Personal Medical Products.