Samsung Electronics Co., Ltd.

Sangwoo Kang

Hangseok Choi

Chuleun Yun

Jaeyoung Huh

Juhyang Lee

Kyungmin Park

Seungshik Shin

Baewon Park

Jinsik Choi

Cheolha Yun

Kwangyoon Lee

A method and an apparatus for diagnosing an electronic apparatus are provided. The device for diagnosing an electronic device includes a master diagnosis block that generates a control signal when a diagnosis mode is started, a multiplexer that sequentially outputs a diagnosis power through a diagnosis power path based on the control signal, a slave diagnosis block that is sequentially supplied the diagnosis power through the diagnosis power path and generates diagnosis data of a power management circuit of the electronic device by using the diagnosis power, a modulator that transmits the diagnosis data by modulating a power signal of the diagnosis power path, and a demodulator that receives the diagnosis data by demodulating the power signal of the diagnosis power path and provides the diagnosis data to the master diagnosis block.

Method and apparatus for diagnosing electronic apparatus

An example electronic device including a power supply circuit may include a battery; a display module including a display panel; a regulator; a power supply circuit configured to: based on an input voltage of the battery, provide a first voltage and a second voltage to the display module, and provide a third voltage to the regulator; and a switch control circuit configured to: control a switching operation of the power supply circuit, wherein the power supply circuit includes: a first power circuit and a second power circuit, wherein the first power circuit includes multiple switch elements, a first capacitor, a second capacitor, a third capacitor, and a first inductor, and is configured to: for a first time interval, based on a drive signal of the switch control circuit, charge the first capacitor and the second capacitor, based on a current of the first inductor and discharge the third capacitor to provide a first output current to the display module, and for a second time interval, based on a drive signal of the switch control circuit, charge the third capacitor and discharge the first capacitor and the second capacitor to provide the first output current and a second output current to the display module, and wherein the second power circuit is configured to: convert a voltage level of the input voltage of the battery to provide a second voltage to the display module.

Electronic device including power supply circuit

According to one embodiment, an electronic device comprises a battery, an antenna module including a first coil and a second coil, at least one switch electrically connected with the antenna module, a magnetic field controller electrically connected with the antenna module, a charger electrically connected with the battery and the magnetic field controller, and at least one processor electrically connected with the at least one switch, the magnetic field controller, and the charger. The at least one processor may be configured to, based on an operation mode associated with the antenna module, control the at least one switch to connect the first coil with the magnetic field controller, or to connect the first coil and the second coil in parallel and allow the first coil and the second coil connected in parallel to connect with the magnetic field controller. Other embodiments may be possible as well.

Multi-coil antenna, electronic device, and method for connecting multi-coil antenna in electronic device

An overcurrent protection device of a power supply is provided. The overcurrent protection device includes an inductor, a first switch, a second switch, a feedback controller, a pulse width modulation (PWM) controller, and an overcurrent protection controller. The inductor may be connected to an input terminal of the power supply to which a current is inputted from a power source. The first switch may be connected between an output terminal of the inductor and a ground. The second switch may be connected between the output terminal of the inductor and an output terminal of the power supply. The feedback controller may compare an output voltage of the power supply with an output voltage target value, and generate a control voltage based on a result of comparing the output voltage and the output voltage target value. The PWM controller may control switch-on and switch-off of the first and second switches, and control a peak current of the first switch based on the control voltage. The overcurrent protection controller may include a timing capacitor charged with a current source proportional to the control voltage, and generate an overcurrent control signal for driving the PWM controller based on the control voltage. The overcurrent protection controller may charge the timing capacitor by the current source during a first switching period in which the second switch is turned on. When an output current exceeds a predetermined level regardless of an input voltage from the power source, an operation of the power supply may be stopped based on the overcurrent control signal.

Overcurrent protection device of power supply and operating method thereof

An electronic device including a power supply circuit according to the disclosure may include: a battery; a display module including a display panel; a regulator; a power supply circuit configured to: based on an input voltage of the battery, provide a first voltage and a second voltage to the display module, and provide a third voltage to the regulator; and a switch control circuit configured to: control a switching operation of the power supply circuit, wherein the power supply circuit includes: a first power circuit and a second power circuit, wherein the first power circuit includes multiple switch elements, a first capacitor, a second capacitor, a third capacitor, and a first inductor, and is configured to: for a first time interval, based on a drive signal of the switch control circuit, charge the first capacitor and the second capacitor, based on a current of the first inductor and discharge the third capacitor to provide a first output current to the display module, and for a second time interval, based on a drive signal of the switch control circuit, charge the third capacitor and discharge the first capacitor and the second capacitor to provide the first output current and a second output current to the display module, and wherein the second power circuit is configured to: convert a voltage level of the input voltage of the battery to provide a second voltage to the display module.

An electronic device including a voltage divider adaptively changing a voltage division ratio is provided. The electronic device comprises a rechargeable battery; a connector configured to connected the electronic device with an external electronic device; a voltage divider comprising a plurality of capacitors and a plurality of switches for switching an electrical path between each of the plurality of capacitors and the rechargeable battery, wherein the voltage divider is configured to provide three or more voltage division ratios; and a processor operably coupled with the voltage divider and the connector, wherein the processor is configured to: receive an indicator indicating a first voltage of a first power from the external electronic device; select a voltage division ratio from the three or more division ratios, based at least in part on the indicator; and control the plurality of switches on the basis of the selected voltage division ratio, and wherein the voltage divider is configured to: charge a rechargeable battery with a second voltage by dividing the first voltage according to the selected voltage division ratio.

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Gyeonggi-do, South Korea

Sangwoo Kang