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CIRCUIT AND METHOD COMBINING A SWITCHING REGULATOR WITH ONE OR MORE LOW-DROP-OUT LINEAR VOLTAGE REGULATORS FOR IMPROVED EFFICIENCY
CIRCUIT AND METHOD COMBINING A SWITCHING REGULATOR WITH ONE OR MORE LOW-DROP-OUT LINEAR VOLTAGE REGULATORS FOR IMPROVED EFFICIENCY
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机译:将开关稳压器与一个或多个低压降线性电压稳压器组合以提高效率的电路和方法
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摘要
Various embodiments provide a system comprising a regulator and one or more low-drop-out linear regulators for improved efficiency. In one embodiment, a system comprises a regulator and one low-drop-out linear regulator comprising a pass transistor, and furthermore, another transistor matched to the pass transistor except for size. The matching transistor provides information regarding the source-drain voltage drop of the pass transistor. A controller circuit makes use of this information to set the regulator's output voltage to improve the efficiency of the system. Other embodiments are described and claimed.
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