摘要
This paper represents a 4.5V regulated charge pump with extremely small ripple. The pump designed with Voltage Doubler (VD) significantly reduces the output ripple voltage. In addition, this circuit utilizes a controllable pumping current (CPC) technology, which achieves automatically adjusting output current by feedback mechanism and resizing transfer transistors. The proposed charge pump has been demonstrated in 0.32 mu m 3D NAND periphery technology under 3V power supply. Simulation results show that the output ripple voltage is 1.2mV at 5mA load current with 0.1 mu F load capacitance. The maximum current drivability and power efficiency is 8mA and 81% respectively.
- 出版日期2017-9-25
- 单位中国科学院大学