具有预启动、防闩锁功能的1.33倍新型电荷泵设计

Design of the 1.33 Times Charge Pump Circuit With Pre-start and Anti-latch up Function

设计了一种基于外接泵电容的1.33倍新型电荷泵电路.电路采用了预启动和衬底电位选择结构,并利用三相时钟信号方式控制电荷泵的工作状态.采用0.5μmCMOS工艺模型利用Cadence的Specter工具进行了仿真.结果表明:所设计的电路提高了芯片的启动速度,有效防止了闩锁现象的产生;在典型的3.3 V输入电压下,电荷泵效率为93.25%.与传统电荷泵相比优势在于输出电压低,有效地降低了无用功耗.1.33倍电荷泵必将具有广泛地应用前景.

The 1.33 times voltage charge pump circuit based the extemal pump capacitance was designed. The pre - start circuit and substrate potential choice circuit were adopted. The latest three - phase clock signal control method was used to control the working state of charge pump. The Specter simulation results using 0. 5？ m CMOS process models indicate： the circuit design can effectively increase the start -up speed and effectively prevent a latch phenomenon. In a typical 3.3V input voltage, charge pump efficiency is 93.25%. Compared with the traditional charge pump circuit, our circuit can reduce power consumption due to low output voltage. The 1.33 times voltage charge pump circuit is bound to have broad application prospects.