A configurable power management IC for low-volume dc-dc converter applications with high frequency current programmed mode control

This paper introduces a power management IC (PMIC) targeted for wide range of dc-dc converter applications where low volume implementation is the priority, such as battery powered portable applications. The low volume implementation is achieved by a combined switched-capacitor and inductor based architecture, allowing drastic reduction of output filter volumes without increasing switching losses of the system. The introduced solution is highly configurable to support different voltages and current levels, depending on specific application requirements, and hence can be utilized in a wide range of applications including multi-level and differential power converters. The integrated solution also features mixed signal current program mode compatibility, allowing inherent protection, dynamic efficiency optimization and simpler control with superior dynamic response. The custom PMIC is fabricated in a standard 0.13μ CMOS process and results are obtained through operation at 9.3 MHz switching frequency, allowing for the use of small filter components.