December 19th, 2009
Types of Switched Capacitor Voltage Converters
In
the above circuit capacitor C1 is charged to the input voltage during
first half of switching cycle. In the second half of switching cycle
its voltage is inverted and applied to capacitor C2 and load. The
output voltage is negative of the input voltage. The Duty cycle
defined as ratio of charging time of capacitor C1 to the entire
switching cycle time ? is usually 50% because that generally yields
the optimal charge transfer efficiency
Types of Switched Capacitor Voltage Converters