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Low dropout linear voltage regulator with an active resistance for frequency compensation to improve stability
Low dropout linear voltage regulator with an active resistance for frequency compensation to improve stability
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机译：低压差线性稳压器，带有有源电阻，可进行频率补偿以提高稳定性
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摘要
The present invention discloses an LDO (Low DropOut) linear voltage regulator, which is based on an NMC (Nested Miller Compensation) architecture and can be capacitor-free, wherein an active resistor is added to the feedback path of the Miller compensation capacitor to increase the controllability of the damping factor, solve the problem of extensively using the output capacitor with a parasitic resistance, and solve the problem that a compromise must be made between the damping factor control and the system loop gain. Further, the present invention utilizes a capacitor-sharing technique to reduce the Miller capacitance required by the entire system and accelerate the stabilization of output voltage without influencing stability.
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