Samsung Electronics Co., Ltd.

Dongjin Keum

Yus Ko

Younghoon Lee

Minho Choi

Min Sang Park

Hwa Yeal Yu

Gwang-Yol Noh

Byoungmook Kim

Hyunseok Nam

Jehyung Yoon

Sungwoo Moon

Ryotaro Kudo

Hwayeal Yu

Kyunggoo Moh

Pyungwoo Yeon

Hyoungrae Kim

Whanseok Seo

Jaeyoup Choi

Myeonglyong Ko

Youso Cheon

An apparatus configured to measure a load current provided to a load of a switching converter includes a pulse generation circuit configured to generate a control pulse based on a power switch driving signal of the switching converter, a reference current generation circuit configured to generate a reference current based on the control pulse, a clock generation circuit configured to generate a clock signal based on the control pulse and the reference current, and a clock counter configured to count the number of cycles of the clock signal during a switching period of the switching converter. The reference current generation circuit is configured to adjust the reference current to compensate for a leakage current generated in the clock generation circuit during the switching period.

Apparatus and method for measuring low load current

A voltage converter includes a switch controller controlling operation of first second transistors to generate an output voltage from an input voltage while suppressing harmonics generated by the operation of the first an second transistors, wherein the first transistor includes an embedded snubber including a first damping resistor.

Voltage converter with embedded snubber for suppressing switching harmonics

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 charger circuit includes a first path regulator, a path switch, and a second path regulator. The first path regulator is configured to generate a first regulation current based on an input voltage and an input current. The path switch is configured to pass or block a first charging current in response to a control signal. The first charging current is generated based on the first regulation current. The second path regulator is configured to generate a second regulation current based on the input voltage and the input current. At least one of the first charging current and a second charging current is used to charge a battery. The second charging current is generated based on the second regulation current. The second charging current is transferred to the battery without passing through the path switch.

Charger circuit including a plurality of charging paths

A direct current (DC)-DC converting circuit includes a voltage converter generating a regulation current in response to a driving signal and generating an output voltage and an output current; an output voltage regulator regulating the output voltage and outputting a first control signal; a voltage limiter limiting a voltage value of the first control signal below a threshold value; a current sensor sensing an intensity of the regulation current and generating a second control signal having a voltage value corresponding to a value of the sensed intensity; and a driving signal generator generating the driving signal based on the first and second control signals, the first control signal having the voltage value below the threshold value.

DC-DC converting circuit and a power management chip package including the same

A voltage converter includes first and second charging elements, first and second switches, and first and second switch controllers. The first switch controller adjusts a first activation timing of a first control signal in response to a pulse width modulation signal, a switch signal, and a first control signal. The first control signal is a signal for controlling the first switch. The second switch controller adjusts a second activation timing of a second control signal in response to the pulse width modulation signal, the first control signal, and a second control signal. The second control signal is a signal for controlling the second switch.

Buck converter and boost converter with dead time adjustment

Exemplary embodiments disclose a low drop-out regulator including an error amplification unit which includes a zero compensation circuit configured to compensate a plurality of poles which are generated by an output terminal and a buffer, the error amplification unit is configured to generate a first comparison signal in response to a reference voltage and a feedback voltage, the buffer is configured to generate a second comparison signal in response to the first comparison signal and an input voltage, a pass unit configured to provide an output voltage and a load current to the output terminal in response to the second comparison signal and the input voltage, and a feedback unit configured to provide the feedback voltage to the error amplification unit in response to the output voltage. A driving current of the buffer is independently adjusted with respect to the load current.

Low drop-out regulator

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Suwon-si, South Korea

Dongjin Keum