lution is less than 20 mm3 with the use of only 0402 and 0201 capacitors and a mm-scale (roughly 0402 footprint) 36 nH inductor. Importantly, this work shows that the series-parallel topology is both viable and promising for use as a hybrid switched capacitor converter. While there is a need to develop methods for gate driving with the
Switched capacitor inverters are low cost and compact and are capable of achieving efficiencies greater than 90%. Obviously, the current output is limited by the size of the capacitors and the current carrying capacity of the switches. Typical IC switched capacitor inverters have maximum output currents of about 150mA maximum.
The proposed switched capacitor converter circuit has the potential to reconfigure circuit’s structure such that the output voltage varies by selectively triggering switches through adjusting the pulses provided to the switches, which in effect generates both positive and negative voltage ratios.
There are three general techniques for adding regulation to a switched capacitor converter. The most straightforward is to follow the switched capacitor inverter/doubler with a low dropout (LDO) linear regulator. The LDO provides the regulated output and also reduces the ripple of the switched capacitor converter.
When the switch closes to insert the second capacitor bank, the inrush current affects mainly the local parallel capacitor bank circuits and bus voltage. What would cause a Restrike when Switching Capacitors? grounded cct.
Real capacitors have equivalent series resistance (ESR) and inductance (ESL) as shown in the diagram, but these parasitics do not affect the ability of the capacitor to store charge. They can, however, have a large effect on the overall efficiency of the switched capacitor voltage converter. SWITCHED CAPACITOR VOLTAGE CONVERTERS 4.4