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发明授权
CN108710399B 一种具有高瞬态响应的LDO电路 有权

一种具有高瞬态响应的LDO电路
摘要：
本发明公开了一种具有高瞬态响应的LDO电路，所述LDO电路包括：电压反馈环路、电流反馈环路、滤波电容C和负载电阻Rload；所述电压反馈环路用于检测LDO电路的输出电压，通过负反馈机制抑制输出电压的变化；所述电流反馈环路用于检测LDO电路的负载电流，通过电流反馈环路调整功率调整管PW 的导通状态；所述滤波电容C用于减小LDO电路输出电压的纹波；所述负载电阻用于等效LDO所驱动的电路；实现了能够快速响应负载的变化的技术效果。
摘要（英）：

The invention discloses an LDO circuit with a high transient response. The LDO circuit comprises a voltage feedback loop, a current feedback loop, a filter capacitor C and a load resistor Rload; the voltage feedback loop is used for detecting output voltage of the LDO circuit and inhibiting change of the output voltage through a negative feedback mechanism; the current feedback loop is used for detecting load current of the LDO circuit and adjusting a conducting state of a power adjustment tube PW (n-1:0) through the current feedback loop; the filter capacitor C is used for reducing ripple waves of the output voltage of the LDO circuit; the load resistor is used for being equivalent to a circuit driven by an LDO. The LDO circuit has the advantage that the change of a load can be quick responded to.

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