A new inverter-based charge pump circuit with high conversion ratio and high power efficiency

A strategy to improve the charge pump voltage conversion ratio for RFID passive tag

“…For making a better comparison, the charge pump circuit of Hwang et al (2011) is also simulated in 180 nm CMOS technology. The output voltages of Dickson charge pump, the charge pump presented by Hwang et al (2011) and the improved charge pump Table 2 at 1 MHz frequency with different load resistances.…”

“…The output voltages of Dickson charge pump, the charge pump presented by Hwang et al (2011) and the improved charge pump Table 2 at 1 MHz frequency with different load resistances. As it is clear, the improved charge pump has higher voltage conversion for higher load resistances.…”

“…Since these switches of the charge pump circuit are connected to each other in series, the voltage loss of the charge pump circuit is increased linearly along with the increasing of the number of stages or switches after N stages. To overcome this problem, the inverter-based pass transistors are used instead of using diode-connected MOSFET transistors in the presented charge pump circuit in Hwang et al (2011). If the inverter-based pass transistors are on, they work in the sub-threshold region.…”

Low-Voltage Capacitive-Based Step-Up DC-DC Converters for RF Energy Harvesting System: A Review

“…In gate-control (biasing) [67][68][69][70][71], the gate voltage of the Nth,cp stage is provided through a voltage potential generated internally from a higher node in the charge-pump. As the pumping efficiency of the charge-pump degrades due to the off-state of the device, a CMOS inverter is adopted to dynamically control the gate by providing a higher voltage potential from the subsequent stage in the charge-pump as a voltage supply (VDD) to the inverter.…”