Samsung Electronics Co., Ltd.

Hwa Yeal Yu

Yus Ko

Younghoon Lee

Minho Choi

Dongjin Keum

Young Min Park

Young Hoon Lee

Min Ho Choi

Ho Yeon Jeon

Dong Jin Keum

Kudo Ryotaro

Gwang Yol Noh

Eun Suk Kim

Seung Gyu Lee

Hyun Won Moon

An electronic device includes a power management integrated circuit (PMIC) including a plurality of regulators. Each of the plurality of regulators has a current meter configured to measure a respective load current. A load device is configured to receive real-time load current information from the PMIC and to perform a performance improvement operation based on the real-time load current information.

Power management integrated circuit for supplying load current information and electronic device having the same

A semiconductor device includes an inductor selectively connected to a power supply voltage and configured to store and release energy; a first transistor connected between the power supply voltage and the inductor and configured to provide the power supply voltage to the inductor; a second transistor connected to the first transistor in series, connected between the inductor and a ground voltage, and configured to provide the ground voltage to the inductor; a modulator configured to provide a modulation signal to a control circuit configured to control the first and second transistors by performing pulse width modulation (PWM); a current sensor configured to sense an amount of current passing through the first transistor and generate a first output signal based on the sensed amount of current; and a first overcurrent protection output generator configured to generate a second output signal based on the first output signal and a first reference signal.

Semiconductor device and system

An electronic device includes a load device and a power management integrated circuit. The power management integrated circuit is configured to calculate a load power value and provide the load power value to the load device in response to a request from the load device. The power management integrated circuit includes a plurality of regulators and a controller. Each of the plurality of regulators includes a current meter for measuring a load current value to be provided to the load device, and the controller is configured to calculate the load power value by using the load current value measured by the current meter and a load voltage value provided from each of the plurality of regulators to the load device.

Electronic device including a power management integrated circuit

A DC-DC converter is provided. The DC-DC converter includes at least one converter circuit configured to include an inductor and to supply a current to a load through the inductor; and a controller configured to sense the current to generate a sensed signal, to sample and hold the sensed signal at a predetermined sampling time to detect an average current of the inductor, and to control an operation of the at least one converter circuit according to the average current. The sampling time is set to a time in a period while the inductor current is less than a peak and greater than a valley.

DC-DC converter and electronic system including the same

A receiver is provided. The receiver includes a differential amplifier amplifying differential input signals input to input terminals and outputting differential output signals through output terminals and an oscillator connected to the output terminals of the differential amplifier. The differential amplifier and the oscillator operate alternatively in response to an enable signal.

Receiver including an LCD tank filter and method thereof

A PLL circuit for two point modulation includes a first loop filter, a second loop filter, a plurality of switching devices, and a calibration module. The first loop filter filters an output voltage of a charge pump during a gain calibration operation. The second loop filter filters the output voltage of the charge pump during a normal operation. The first loop filter has a bandwidth wider than that of the second loop filter to perform a fast calibration by reducing a lock time. The operation of the first loop filter, the operation of the second loop filter, and the opening of the first loop filter are determined by the switching operations of the switching devices. The calibration module adjusts a gain of analog modulation data based on a frequency error accumulated in the first loop filter after the first loop filter is open during the gain calibration operation.

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Bucheon-si, South Korea

Hwa Yeal Yu