| Popis: |
A design of low-voltage, ultralow power, four-stage charge pump making utilization of dynamic charge transfer switch scheme targeted to minimize the loss of voltage due to threshold voltage drop and body effect implemented at circuit level implemented in 0.18 µ CMOS process proposed to harvest energy obtained from sunlight. The output stage pumping is tackled by the clocking technique of proposed charge pump instead of output stage configured with the diode. The proposed design is capable to boost solar voltage starting from 0.1 to 3.3 V with the maximum output reported by the simulation as 4.7 V. The sunlight intensity does not remain static it changes, so output voltage is analyzed under various sunlight intensities. From the result of simulation, it is reported that power consumption with the proposed design is 89 nW which is lower in comparison with the existing design. In this work, comparison is made between the various design schemes and analysis is done between the power consumption, frequency, pumping voltage, and delay. |
