[2000]A new charge pump without degradation in threshold voltage due to body effect

—A new charge-pump circuit with the controllable
body voltage is proposed. By adjusting the body voltage, the back
bias effect is removed and the threshold voltage of the MOSFET
used as a switch is kept constant. With no threshold voltage in-
crease, higher output voltage than the conventional charge pump
can be obtained in the proposed charge pump. With two auxiliary
MOSFET’s used to update the body voltage, the proposed charge
pump shows compatible performance of the ideal diode charge
pump
IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 35, NO. 8, AUGUST 2000 1227




A New Charge Pump Without Degradation in Threshold Voltage
Due to Body Effect
Jongshin Shin, In-Young Chung, Young June Park, and Hong Shick Min


Abstract―A new charge-pump circuit with the controllable
body voltage is proposed. By adjusting the body voltage, the back
bias effect is removed and the threshold voltage of the MOSFET
used as a switch is kept constant. With no threshold voltage in-
crease, higher output voltage than the conventional charge pump
can be obtained in the proposed charge pump. With two auxiliary
MOSFET’s used to update the body voltage, th