Abstract
This paper proposed a bootstrapped type high-efficient charge pump circuit based on the Dickson charge pump for high output power and pump-efficiency. By using bootstrapped technique, it can increase both of pump-efficiency and power-efficiency. The proposed bootstrapped based charge pump can avoid the threshold voltage drop and enable to generate a higher output voltage. Simulation by using HSPICE level 3 model shows that for conventional Dickson charge pump, it convert the input low DC-voltage (Vin=1.5V) up to 3.8 times of it (VOUT=5.77V), the pump efficiency was 76.93%. Our work, however, can convert the low input DC-voltage (Vin=1.5V) up near to 4.4 times of it (VOUT=6.62V), pump efficiency can reach up to 88.26%.
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