Samsung Electronics Co., Ltd.

Woonhyung Heo

Sangun Bang

Dongjoon Kim

Dongjo Kim

Jinsoo Lee

Sungeun Lee

Duseung Oh

Sungwoo Lee

Hyoungseok Oh

Sungkyu Cho

Daewoong Cho

Youngsoo Lee

Hyebong Ko

Kyeseok Yoon

A portable device includes: a modem configured to perform power line communication with a charger external to the portable device; and a charging circuit configured to, from first power provided by the charger, charge a battery and supply power to an electrical load, wherein the charging circuit is further configured to cut off the supply of the first power to the electrical load and supply second power from the battery to the electrical load.

Portable device communicating with charger and method of operating the same

A charging integrated circuit (IC) includes a bidirectional switching converter and a controller. The bidirectional switching converter is configured to generate a first output voltage by bucking a first input voltage based on a first switching operation in a buck mode, generate a second output voltage by boosting a second input voltage based on a second switching operation in a boost mode, and generate the first output voltage or the second output voltage based on a third switching operation in a buck-boost mode. The controller is configured to control the second switching operation according to a valley current mode control (VCMC) in a continuous current section and control the second switching operation according to a voltage mode control (VMC) based on a fixed switching frequency in a discontinuous current section, in the boost mode.

Charging integrated circuit including bidirectional switching converter, and electronic device including the same

A device for detecting an attachment and detachment of a portable device according to example embodiments of the present disclosure may include a first terminal and a second terminal configured to be connected to the portable device; a pull-up circuit connected to the first terminal; a charging circuit configured to generate an output voltage for charging the portable device; and a controller configured to control the charging circuit to generate the output voltage when a voltage of the first terminal drops in a detachment state, and determine whether to transition to an attachment state based on an output current output through the first terminal during a first period in which the output voltage is generated.

Device and method of detecting attachment and detachment of portable device

A mobile system includes a first mobile device configured to output a signal having a level less than or equal to a reference level on the basis of a charged state of a battery in the first mobile device and a second mobile device configured to receive the signal and to selectively provide power to the first mobile device on the basis of a duration time for which a level of the signal is maintained to be less than or equal to the reference level and a toggle time for which the signal is toggled.

Mobile device and operating method thereof

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Seoul, South Korea

Woonhyung Heo