Under this circumstance, LDO's output impedance is not equal to Rout (open loop parameter mentioned above). From now on, I will derive the formula of LDO's output impedance in close loop. figure 1-1 (a) LDO in close loop (normal function); (b) its equivalent circuit when deriving ...
In this paper, the stability conditions and the output impedance of LDO are discussed, and the output voltage spike and current distributions in the power delivery path are analyzed. The theoretical analysis will be confirmed by the cadence simulation results. 展开 ...
A low side, low voltage current sink circuit having improved output impedance to reduce effects of leakage current. A current sink circuit is described having a transistor having its emitter coupled to an emitter degeneration resistor which is coupled to the low side (e.g., ground) of a power...
The voltage regulator consists of a differential amplifier which compares reference voltage with voltage from a feedback divider. It adjusts the impedance of a PMOS transistor for stabilization of output voltage at a set level. Input voltage: 2.4...3.6 V ...
[10].The source of detects theLDO output for comparing with a control voltage de-,ned at the gate of .An error signal is then generated at thegate of the power transistor to achieve closed-loop voltage reg-ulation by the negative feedback.The output impedance of the LDO is reduced ...
proposes a new low-impedance transient-current enhanced (LTE) buffer, which is applied for low-dropout regulator (LDO) with large off-chip capacitor. The... X Zhao,Q Zhang,Y Xin,... - 《IEEE Transactions on Power Electronics》 被引量: 0发表: 2022年 A 0.18 μm CMOS capacitor-less Low...
The best method for probing the switcher’s output uses a 50-Ω coaxial cable maintained in a 50-Ω environment and terminated by the oscilloscope’s selectable 50-Ω input impedance. A capacitor placed between the regulator’s output capacitor and the oscilloscope’s input blocks dc flow. The...
Since this problem occurs when you put a DECT phone in close proximity, it is likely the LDO is susceptible to EMI from the DECT phone. This part has ground current of 25 uA, which is very low. This tells me the part has high impedance nodes, which will make the LDO more susceptible...
The circuit is characterized by very low input capacitance, and very low output impedance and thus high capacitive drive capability. A unique connection to ground internally of the integrated circuit is also described which comprises a diffusion made at the same time as the emitter diffusion of ...
A data processor has at least one output terminal which a user of the data processor can vary the output impedance thereof depending upon the application environment of the data processor. A first output buffer of an output buffer stage ... MICHAEL G. GALLUP,STEVEN C. MCMAHAN,KENNETH C. SC...