Hybrid control voltage regulator for switched capacitor based embedded DC-DC buck converter

In this paper a novel hybrid control voltage regulator for switched capacitor based embedded DC-DC buck converter is presented. Precise output voltage is maintained with the help of load current as well as switching frequency of the switched capacitor. To maintain high power efficiency over a wide range of load current, frequency control regulation is used whereas good transient performance is achieved with the current control regulation. Proposed hybrid regulator is implemented in 0.18um CMOS process with the dual gate MOS transistor. Total 440pF flying capacitors and 50pF load capacitor is used to implement proposed embedded voltage regulator. Proposed regulator supports up to 30mA load current without any external component.