Loop stabilizing circuit under different loads based on LDO, control method of loop stabilizing circuit and electronic equipment

The invention aims to provide an LDO (Low Dropout Regulator)-based loop stabilizing circuit under different loads, a control method of the LDO-based loop stabilizing circuit and electronic equipment. The circuit comprises a light load detection circuit, a heavy load detection circuit and a power tub...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHANG YA'NAN, GUAN HAOWEI, ZHONG LONG, LIU DEQI
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:The invention aims to provide an LDO (Low Dropout Regulator)-based loop stabilizing circuit under different loads, a control method of the LDO-based loop stabilizing circuit and electronic equipment. The circuit comprises a light load detection circuit, a heavy load detection circuit and a power tube adjusting circuit, the light load detection circuit is connected with the power tube adjusting circuit and the load circuit and is used for detecting light load parameters of the load circuit; the heavy load detection circuit is connected with the power tube adjusting circuit and the load circuit and is used for detecting heavy load parameters of the load circuit; and the power tube adjusting circuit is connected with the load circuit and is used for adjusting the number of opened power tubes according to the detected load. By detecting the magnitude of the load current and controlling the number of the started power tubes according to the magnitude of the load current, the problems of stability and the output vo