一种基于电容倍增的无电容式LDO

A capacitor-less LDO based on capacitor multiplier

设计了一种基于电容倍增的无电容式LDO，将电容倍增模块嵌入到了误差运算放大器的第一级，提升了系统的环路带宽，有良好的瞬态响应。电路通过0.13μm 标准 CMOS 工艺仿真实现，仿真结果显示，系统静态功耗为42μW ，当负载从0-50mA变化时，电压最大波动为87mV ，建立时间为2.5μs。

A capacitor-less LDO based on capacitor multiplier is proposed in this paper. The capacitor multiplier is embedded into the first stage of the error amplifier, and the GBW of the LDO is enhanced and the transient responses are improved. The circuit is simulated in a 0.13μm standard CMOS process and the power is 42μW. When the load current changes from 0 to 50 mA, the maxium overshot voltage is 87 mV while the setting time is only 2.5μs.