Monolithic Power Systems, Inc.

Silergy Semiconductor Technology (hangzhou) Ltd

Volterra Semiconductor Corporation

Fairchild Semiconductor Corporation

Semiconductor Components Industries, LLC

Chengdu Monolithic Power Systems Co., Ltd.

Kaiwei Yao

Anthony J Stratakos

Ilija Jergovic

Michael D McJimsey

Artin Der Minassians

Wei P Chen

Yuancheng Ren

Alexandr Ikriannikov

Marco A Zuniga

David B Lidsky

Ana Borisavljevic

Zhiyuan Shen

Chen Zhao

Junming Zhang

James Copland Moyer

Xin Zhang

Chiqing Fang

Vincent W Ng

Eric X Yang

Lei Du

Ming Gu

Enzhu Liang

Bairen Liu

Phong T Nguyen

Hua Zhu

Peng Xu

Jian Deng

Naixing Kuang

Hunt Hang Jiang

Jian Yin

Zhiwei Xu

David Meng

Zheng Luo

Zhengwei Zhang

Marc E Dagan

Edward E Deng

Da Chen

Huanyu Lu

Zhiwei Liu

Ryan James Ricchiuti

Xiaopeng Wang

David Tournatory

Frank Xi

Yuxin Li

Zhou Lu

Mike Grimm

David B Liksky

Alexandr Ikiannikov

Llija Jergovic

An auxiliary circuit of a power converter is disclosed, where: the auxiliary circuit is coupled to a load of the power converter; and the auxiliary circuit is configured to generate an auxiliary current provided to the load, in order to limit a variation range of a load voltage of the load when a variation of an output signal of the power converter is greater than a predetermined value.

Auxiliary circuit of power converter and driving circuit

A method of controlling a multi-phase power converter having a plurality of power stage circuits coupled in parallel, can include: obtaining a load current of the multi-phase power converter; enabling corresponding power stage circuits to operate in accordance with the load current, such that a switching frequency is maintained within a predetermined range when the load current changes; and controlling the power stage circuits to operate under different modes in accordance with the load current, such that the switching frequency is maintained within the predetermined range when the load current changes.

Apparatus and method of controlling a multi-phase power converter, having a plurality of power stage circuits coupled in parallel

A method of inductor current reconstruction for a power converter can include: acquiring at least one of a current that represents a current flowing through a main power transistor, and a current that represents a current flowing through a rectifier transistor, in order to generate a switching current sampling signal in the power converter; and generating an inductor current reconstruction signal representing an inductor current in one complete switching cycle according to the switching current sampling signal and an inductor voltage signal representing a voltage across an inductor in the power converter.

Inductor current reconstruction circuit, power converter and inductor current reconstruction method thereof

A concentration control circuit can include: a voltage feedback circuit configured to generate a current reference signal representing an error between a voltage reference signal and an output voltage feedback signal shared by each of a plurality of power stage circuits of a multi-phase power converter to adjust a respective phase current; and a clock signal generation circuit configured to generate a clock signal to adjust at least one of switching frequency and phase of each of the power stage circuits, where the clock signal is adjusted in accordance with a change of the current reference signal.

Control circuit and concentration control circuit thereof

Multi-phase power converter, control circuit and control method thereof

A multi-phase power supply includes a plurality of phase controllers each driving a first terminal of a respective inductor alternatively between an input voltage and a ground voltage to regulate an output voltage in a work mode, keeping the first terminal of the respective inductor in a high impedance state during a non-work mode, having an input for receiving an enable signal for selecting between the work mode and the non-work mode, and generating a current monitor signal to represent a current through the respective inductor during both the work mode and the non-work mode, and a controller coupled to each phase controller for selectively enabling respective ones of the phase controllers in response to a load demand, receiving the current monitor signal from each phase controller, and selectively shutting down the multi-phase power supply when a total of current monitor signals from the phase controller exceeds a threshold.

Inductor current emulation for output current monitoring

A resonant switching converter can include: a voltage switching circuit configured to receive a first input voltage, and to generate a second input voltage of a resonant branch coupled to the voltage switching circuit; where when the voltage switching circuit is in a first operating state, the second input voltage provided to the resonant branch is less than the first input voltage; and where when the voltage switching circuit is in a second operating state, the input voltage provided to the resonant branch is zero.

Resonant switching converter

Concentration control circuit having voltage feedback and clock generation circuitry

An AC-DC converter can include: a rectifying circuit configured to convert an AC input voltage into a DC voltage, where at least one active switching device is included in one conductive rectifying loop of the rectifying circuit; a control circuit configured to control switching states of the active switching devices according to an output voltage of the AC-DC converter and the AC input voltage, in order to decrease an error between the DC voltage and the output voltage of the AC-DC converter; and a DC-DC converter configured to convert the DC voltage into the output voltage of the AC-DC converter.

AC-DC converter and AC-DC rectifier

A current control circuit for a power converter can include: a sense transistor coupled to a power transistor to be sensed; and a control circuit configured to control a voltage at a power terminal of the sense transistor in order to mirror a current flowing through the power transistor, to control the sense transistor to generate a sense current, and to generate a control signal for controlling operation states of the power transistor in accordance with the sense current and a reference current.

Current control circuit and power converter

A current detection circuit can include: a detection power switch coupled to a power switch to be detected; a current control circuit configured to control voltages of power terminals of the detection power switch in order to generate a detection current flowing through the detection power switch when the power switch is on; and where a flowing direction of the detection current is consistent with a flowing direction of a current flowing through the power switch.

Current detection circuit and power converter

An apparatus for photovoltaic power generation can include: an inverter; and at least one photovoltaic optimizer, where input terminals of each photovoltaic optimizer are coupled to output terminals of a photovoltaic panel, and output terminals of each photovoltaic optimizer are coupled in series with each other between input terminals of the inverter; where a maximum power point of the photovoltaic panel is tracked in accordance with an input voltage of the inverter when the photovoltaic optimizer operates in a first mode; and the maximum power point of the photovoltaic panel is tracked in accordance with an output voltage of the photovoltaic panel when the photovoltaic optimizer operates in a second mode.

Power conversion system, photovoltaic optimizer and power tracking method thereof

A method of controlling a photovoltaic power system, can include: controlling a first current flowing through a connection line between an output terminal of a power conversion circuit and an input terminal of an inversion circuit according to a rapid shutdown signal; and controlling operation states of the power conversion circuit coupled to a photovoltaic panel in accordance with the first current, such that a voltage on the connection line meets preset requirements. A photovoltaic power system can include: an inversion circuit configured to be controlled to regulate a first current of an input line of the inversion circuit; and at least one power conversion circuit coupled in series with the input line, and being configured to transition among different operation states according to the first current.

Power conversion circuit, inversion circuit, photovoltaic power system and control method

The present disclosure describes a power stage. The power stage includes a metal-oxide semiconductor field-effect transistor (MOSFET) and a driver IC coupled to the MOSFET. The driver IC is configured to switch the MOSFET to an ON-state so that MOSFET conducts a current. The driver IC includes a current monitor circuit that outputs a current monitor signal, which corresponds to the current through the MOSFET when it is in the ON-state. The current monitor signal includes an error caused by a temperature difference between the MOSFET and the driver IC. As a result, the driver IC further includes a compensation circuit that is configured to determine a thermal gradient across the driver IC, and based on the thermal gradient, adjust the current monitor circuit to reduce the error.

Thermal gradient correction of a current monitor signal

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San Jose, CA, United States of America

Kaiwei Yao