Samsung Electronics Co., Ltd.

Gwangyol Noh

Jaekwan Kim

Gil Won Yoon

Hwayeal Yu

A switching regulator may include; an inductor connected to a switch node, a power switch connected to the switch node and configured to apply a first voltage to the switch node in response to a first control signal and to apply a second voltage to the switch node in response to a second control signal, and a controller configured to generate the first control signal and the second control signal. The second control signal transitions from low to high following a first dead time after the first control signal transitions from low to high, the first control signal transitions from high to low following a second dead time after the second control signal transitions from high to low level, and an inductor current flowing through the inductor flows in a first direction during the first dead time and in a second direction, different from the first direction, during the second dead time.

Switching regulator and power management integrated circuit

Provided are a switching regulator and a power management unit including the switching regulator. A switching regulator configured to transform an input voltage and generate an output voltage includes a first regulating circuit configured to regulate the input voltage and to generate a first voltage based on a first switching signal set having a first duty ratio, and a second regulating circuit configured to regulate the first voltage and to generate the output voltage based on a second switching signal set having a second duty ratio. The switching regulator determines a voltage gain based on the first duty ratio and the second duty ratio, the voltage gain corresponding to a ratio of the output voltage to the input voltage.

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Yongin-si, South Korea

Gwangyol Noh