System General Corporation

Richtek Technology Corporation

Semiconductor Components Industries, LLC

Fairchild (taiwan) Corporation

Systems General Corp.

Fairchild Semiconductor Corporation

Other

System Genreal Corp.

Richtek Technology Corpoation

Ta-Yung Yang

Jenn-Yu G Lin

Chuh-Ching Li

Chih-Feng Huang

Li Kuei Lin

Wei-Hsu Chang

Jung-Sheng Chen

Guo-Kiang Hung

Chou-Sheng Wang

Chern-Lin Chen

Tuo-Hsin Chien

Wei-Hsuan Huang

Pei-Sheng Tsu

Tzu-Chen Lin

Song-Yi Lin

Rui-Hong Lu

Kuo-Chi Liu

Chung-Lung Pai

Chien-Yuan Lin

Tso-Min Chen

Shih-Jen Yang

Kun-Yu Lin

Chih-Hsien Hsieh

Ying-Chieh Su

Kuo-Hsien Huang

Yi-Min Hsu

Yu-Chang Chen

Tien-Chi Lin

Cheng-Chi Hsueh

Cheng-Sung Chen

Ming-Chieh Lee

Feng-Cheng Tsao

Yue-Hong Tang

Jhih-Da Hsu

Chao-Chih Lin

Jea-Sen Lin

Feng Cheng Tsao

Jing-Meng Liu

Isaac Y Chen

Chao-Chi Chen

Kai-Fang Wei

Chien-Tsun Hsu

Tse-Jen Tseng

Yi-Chi Lin

Chung-Hui Yeh

Chen-Hui Chan

Tso Min Chen

Chi-Yin Lo

Chien-Tung Lan

Chien-Fu Tang

Yi-Wei Lee

Chien-Yu Chen

Chien-Wei Chiu

Chien-Yang Chen

Chiu-Chih Chiang

Chen-Hua Chiu

Hsuan-I Pan

Chin-Yen Lin

Ting-Wei Liao

Ju-Hyun Kim

Kun-Huang Yu

Li-Di Lo

Shih-Hung Hsieh

Li-Di Luo

Yu-Min Chen

Jian-Ming Fu

Hung-Chun Chen

Sheng-Fu Hsu

Shao-Chun Huang

Hao-Wen Chung

Chih-Ho Lin

Ying-Chi Chen

Yen-Ting Chen

Chiu Shao Wei

Chem-Lin Chen

Yi-Hsin Leu

Pei-Hsuan Cheng

Tsung-Wei Huang

Shui-Mu Lin

Chih-Yuan Hsu

Hang-Seok Choi

You-Kuo Wu

Wu-Te Weng

Li-Wei Lee

Hung-Sen Tu

Chuan-Chang Li

Yong-Zhong Hu

Chi-Chen Chung

Gwo-Hwa Wang

Yu-Wen Chang

Jin-Hwa Chung

Chien Yuan Lin

Kuang-Chih Shih

Ting-Ta Chiang

Chien-Liang Chen

Pei-Yu Chiang

Wei-Ting Wang

Chih-Chi Chang

Yuan-Pu Lee

Wei-Li Hsu

A switching converter circuit, which switches one terminal of an inductor to different voltages, includes a high side MOSFET, a low side MOSFET, and a driver circuit which includes a high side driver, a low side driver, and a dead time control circuit. According to an output current, The dead time control circuit adaptively delays a low side driving signal to generate a high side enable signal for enabling the high side driver to generate a high side driving signal according to a pulse width modulation (PWM) signal; and/or adaptively delays the high side driving signal to generate a low side enable signal for enabling the low side driver to generate the low side driving signal according to the PWM signal, so as to adaptively control a dead time in which the high side MOSFET and the low side MOSFET are both not conductive.

Switching converter circuit and driver circuit having adaptive dead time thereof

A control circuit for controlling a power supply circuit to provide power to a system device which includes a communication circuit includes: a pulse width modulation (PWM) controller configured to switch a transformer of the power supply circuit to generate a first output voltage; and a switched capacitor converter configured to generate a second output voltage according to the first output voltage. The second output voltage provides power to the communication circuit, wherein the communication circuit generates a power saving signal to control the PWM controller and the switched capacitor converter. When the power saving signal is enabled, the first output voltage is decreased and a duty ratio of the switched capacitor converter is increased.

Control circuit having power saving mode for use in power supply circuit

A resonant switching power converter includes: a first power stage circuit; a second power stage circuit; a controller; and a current sensing circuit configured to sense a first charging/discharging resonant current flowing through a first charging/discharging inductor of the first power stage circuit and sense a second charging/discharging resonant current flowing through a second charging/discharging inductor of the second power stage circuit, to generate a corresponding first current sensing signal and a corresponding second current sensing signal, respectively. The controller adjusts at least one of a first delay interval, a second delay interval, a third delay interval, a fourth delay interval, and/or input voltages, according to a first current sensing signal and a second current sensing signal, so that a constant ratio between an output current of the first power stage circuit and an output current of the second power stage circuit is achieved.

Resonant switching power converter

A resonant switching power converter includes: a power stage circuit and a driving circuit. The power stage circuit includes: a resonant capacitor, a resonant inductor and switches. The driving circuit includes: drivers for driving the switches; and a power supply circuit for providing driving powers to the drivers. The power supply circuit includes: a voltage booster circuit generating a booster power supply according to a clock signal, a DC voltage and an output related signal; driving capacitors, wherein a voltage across each driving capacitor corresponds to one driving power; and supply diodes, which are coupled in series from the booster power supply along a forward direction of the supply diodes. A backward end of each supply diode is coupled to a positive end of one corresponding driving power, to charge one corresponding driving capacitor, thus generating the corresponding driving power.

Resonant switching power converter and driving circuit thereof

A DC-DC power conversion system includes a resonant switched-capacitor converter and a controller. The resonant switched-capacitor converter is switched between a first state and a second state to generate an output voltage, and includes an input terminal, a resonant tank, an output capacitor, a first set of switches and a second set of switches. The input terminal is used to receive an input voltage. The output capacitor is used to generate the output voltage. The first set of switches is turned on in the first state and turned off in the second state according to a first control signal. The second set of switches is turned on in the second state and turned off in the first state according to a second control signal. The controller adjusts the first control signal and the second control signal according to the output voltage.

SCC-based DC-DC power conversion system capable of receiving switching control adjustable by output voltage thereof, and power conversion method thereof

A switched capacitor converter circuit includes: plural capacitors and plural switches which periodically switch the coupling relationships of the plural capacitors. During a first period, the switches control at least two of the capacitors to be electrically connected in series between the first power and the second power, and control a first capacitor of the capacitors to be electrically connected in parallel to the second power. During a second period, the switches control at least two of the capacitors to be electrically connected in series between the second power and a ground voltage level, and control a second capacitor of the capacitors to be electrically connected in parallel with the second power, thereby executing power conversion between the first power and the second power.

Pipeline resonant and non-resonant switched capacitor converter circuit

A resonant switching power converter includes: plural capacitors; plural switches; at least one charging inductor; at least one discharging inductor; a controller which generates a charging operation signal and at least one discharging operation signal; and at least one zero current detection circuit which detects a charging resonant current flowing through the charging inductor in a charging process and/or detect a discharging resonant current flowing through the discharging inductor in a discharging process. When detecting that a level of the charging resonant current or a level of the discharging resonant current is zero, the zero current detection circuit generates at least one zero current detection signal which is sent to the controller. The controller determines start time points and end time points of the charging process and the discharging process according to the zero current detection signal. There can be plural discharging processes.

A resonant switching power converter includes: capacitors; switches; at least one charging inductor; at least one discharging inductor; a controller generating a charging operation signal corresponding to charging process and discharging operation signals corresponding to discharging processes, to operate the switches to switch electrical connection relationships of the capacitors. In the charging process, the controller controls the switches via the charging operation signal, so that a series connection of the capacitors and the charging inductor is formed between the input voltage and the output voltage, which forms a charging path. In the discharging processes, the controller controls the switches via the discharging operation signals, so that a series connection of one of the capacitors and the discharging inductor is formed between the output voltage and a ground voltage level, to form plural discharging paths at different periods in a sequential order.

Resonant switching power converter capable of performing discharging operation in a sequential order

A resonant switching power converter includes: capacitors, switches, at least one charging inductor, at least one discharging inductor and a pre-charging circuit. The pre-charging circuit controls a first switch of the switches when the resonant switching power converter operates in a pre-charging mode, to control an electrical connection relationship between the input voltage and a first capacitor of the capacitors and to control other capacitors of the capacitors, thus controlling the capacitors to be connected in parallel to one another or to be connected in series to one another, so that when a voltage drop across the first capacitor is lower than a predetermined voltage, the voltage drop across each capacitor is charged to the predetermined voltage. After operating in the pre-charging mode, the resonant switching power converter subsequently operates in a resonant voltage conversion mode, to thereby convert an input voltage to an output voltage.

A multiple output universal serial bus travel adaptor includes: at least one AC-DC converter for converting an AC power to a first DC power; at least one DC-DC converter for providing a second DC power according to the first DC power; plural switches which are coupled to the AC-DC converter and/or the DC-DC converter to provide the first DC power or the second DC power to corresponding connectors according to operation signals; and a protocol controller configured to generate the operation signals according to at least one of the following parameters: a) the types of the connectors; b) whether there is a mobile device connected with the connectors; c) a first command from the mobile device; d) the power consumed by the mobile devices; e) the currents flowing through the connectors; and f) the voltages at the connectors.

Multiple outputs universal serial bus travel adaptor and control method thereof

A resonant switching power converter includes: at least one capacitor; switches coupled to the at least one capacitor; at least one charging inductor; at least one discharging inductor; and a zero current estimation circuit. The switches switch electrical connection relationships of capacitors according to an operation signal. The zero current estimation circuit estimates a time point at which a charging resonant current is zero during a charging process and/or estimate a time point at which a discharging resonant current is zero during at least one discharging process according to voltage differences across two ends of the charging inductor and/or the discharging inductor, so as to correspondingly generate a zero current estimation signal. The zero current estimation signal is adopted to generate the operation signal.

A flyback power converter circuit includes a transformer, a blocking switch, a primary side switch, a primary side controller circuit and a secondary side controller circuit. The transformer is coupled between an input voltage and an internal output voltage in an isolated manner. The blocking switch controls the electric connection between the internal output voltage and an external output voltage. In a standby mode, the internal output voltage is regulated to a standby voltage, and the blocking switch is controlled to be OFF; in an operation mode, the internal output voltage is regulated to an operating voltage, and the blocking switch is controlled to be ON, such that the external output voltage has the operating voltage. The standby voltage is smaller than the operating voltage, so that the power consumption of the flyback power converter circuit is reduced in the standby mode.

Flyback power converter and conversion controller circuit

A switch capable of decreasing parasitic inductance includes: a semiconductor device, a first top metal line, and a second top metal line. The second top metal line electrically connects a power supply input end and a current inflow end of the semiconductor device, wherein a first part of the first top metal line is arranged in parallel and adjacent to a second part of the second top metal line. When the semiconductor device is in an ON operation, an input current outflows from the power supply input end, and is divided into a first current and a second current. When the first current and the second current flow through the first part and the second part respectively, the first current and the second current flow opposite to each other, to reduce an total parasitic inductance of the first top metal line and the second top metal line.

Switch capable of decreasing parasitic inductance

A flyback converter includes a power transformer, a primary side switch, a secondary side switch and a controller. A secondary side switching signal has an SR pulse for achieving synchronous rectification, and a ZVS pulse for achieving zero voltage switching. The ZVS pulse is enabled according to a first characteristic of a resonance waveform, whereas, a primary side switching signal is enabled according to a second characteristic of resonance waveform. When an output current increases, the primary side switching signal is disabled during an inhibition interval, such that primary side switching signal does not overlap with the ZVS pulse, thereby preventing the primary and secondary side switches from being both conductive simultaneously. The inhibition interval is correlated with a rising edge of the primary side switching signal in a previous switching period and a resonance period of the resonance waveform.

Flyback converter and switching controller circuit and control method thereof

A spike suppression circuit includes a wide bandgap transistor, a first transistor, a clamping circuit, and a capacitor. The wide bandgap transistor is depletion-type. The first transistor is coupled in series with the wide bandgap transistor. The clamping circuit provides a voltage difference, and is coupled to a common node between the wide bandgap transistor and the first transistor. The capacitor provides a supply voltage for the clamping circuit. When the first transistor is turned off, the capacitor can recycle spike energy at the common node.

Spike suppression circuit and power converter and control method thereof

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Milpitas, CA, United States of America

Ta-Yung Yang