Burst Mode Switched Capacitor Voltage Converter Modeling and Design
An inductorless switched - capacitor (SC) DC-DC voltage converter and a model based on the averaging technique are presented. The model was validated through circuit level simulations for a SC converter designed using CMOS 0.18 um technology, capable to deliver output currents up to 100 mA at a regulated low ripple 3.3 V output voltage, for input voltages between 1.8 V and 3.2 V and can be used for other design specifications as well. The converter automatically switches to burst mode when the output current decreases. The value of the output current is detected without the use of inductors or resistors.
burst mode switched capacitor dc-dc converter average small signal model dynamic behavior stability