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公开(公告)号：US20240178747A1
公开(公告)日：2024-05-30
申请号：US18457671
申请日：2023-08-29
申请人： Fujitsu Limited
发明人： Tatsuya Hirose
CPC分类号： H02M1/385 , H02M1/0025 , H02M1/088 , H02M3/157
摘要： A switching power supply includes a switching power supply circuit that has an upper arm and a lower arm that are coupled in series. The switching power supply further includes a drive circuit that alternately turns on the upper arm and the lower arm across a dead time in which the upper arm and the lower arm are turned off such that an output voltage of the switching power supply circuit follows a voltage of an input signal that is an envelope signal or a subcarrier signal; and an adjustment circuit that adjusts the dead time according to the voltage of the input signal.
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公开(公告)号：US11876453B2
公开(公告)日：2024-01-16
申请号：US17560761
申请日：2021-12-23
发明人： Ting-Wei Liao , Chien-Yu Chen , Kun-Huang Yu , Chien-Wei Chiu , Ta-Yung Yang
摘要： 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.
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公开(公告)号：US20230283202A1
公开(公告)日：2023-09-07
申请号：US18160736
申请日：2023-01-27
发明人： Tomoko KONDA
IPC分类号： H02M7/5387 , H02M1/38 , H02M1/00 , H02M1/32 , H02P27/08
CPC分类号： H02M7/5387 , H02M1/385 , H02M1/0009 , H02M1/32 , H02P27/08
摘要： There is provided an electric-power conversion apparatus in which a dead time can be set, while in an electric-power converter in which an AC current flows in a series circuit of switching devices, there is considered the effect of an error between a current value obtained for setting a dead time and an actual current value at a time of setting the dead time. An electric-power conversion apparatus, for a series circuit of each set, obtains a value of a current flowing in the series circuit is obtained; for an obtained current value, corrects a current error caused by a phase shift between a value of an actual current at a time when the dead time is set and the obtained current value; and set the dead time based on the corrected current value.
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公开(公告)号：USRE49633E1
公开(公告)日：2023-08-29
申请号：US17395662
申请日：2021-08-06
申请人： Dell Products L.P.
发明人： Kejiu Zhang , Shiguo Luo , Ralph H. Johnson
IPC分类号： H03K17/16 , H03K17/082 , H02M1/38 , H02M1/08
CPC分类号： H03K17/082 , H02M1/08 , H02M1/385
摘要： Systems and methods for adaptive modulation of MOSFET driver key parameters for improved voltage regulator efficiency and reliability in a voltage regulator may include a power stage. The power stage may include a high side switch including a high side gate, a peak voltage detection circuit, and a high side driver strength modulator circuit. The high side driver strength modulator circuit may determine a high side driver strength level. The high side driver strength modulator circuit may also connect a subset of the set of high side gate drivers to the high side gate based on the high side driver strength level. The high side driver strength modulator circuit may also disconnect a remaining subset of the set of high side gate drivers from the high side gate.
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5.发明公开公开(公告)号：US20240313657A1
公开(公告)日：2024-09-19
申请号：US18601567
申请日：2024-03-11
发明人： QIAN FANG , YUN SUN , TUOFU LIU , XIUHONG ZHANG , YUAN LIN
CPC分类号： H02M3/33523 , H02M1/0025 , H02M1/385
摘要： Controller and method for a power converter. For example, a controller for a power converter includes: a first drive signal generator configured to generate a first drive signal to turn off a first transistor at a first time and turn on the first transistor at a second time, the first transistor being configured to receive an input voltage and related to a primary winding coupled to an auxiliary winding and a secondary winding, the secondary winding being related to an output voltage, the second time being later than the first time; a second drive signal generator configured to: generate a second drive signal to turn on a second transistor at a third time, the second transistor being coupled to the first transistor and related to the primary winding, the third time being later than the first time and being earlier than the second time.
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公开(公告)号：US11923787B2
公开(公告)日：2024-03-05
申请号：US17579025
申请日：2022-01-19
申请人： Kohler Co.
发明人： Adam Larson , Isaac S. Frampton
IPC分类号： H02M7/5387 , H02M1/38 , H02M5/458 , H02M7/48 , H02M7/5395 , H02M1/00 , H02P9/30 , H02P27/06
CPC分类号： H02M7/5387 , H02M1/38 , H02M5/4585 , H02M7/48 , H02M7/5395 , H02M1/0038 , H02M1/0067 , H02M1/008 , H02M1/385 , H02P9/305 , H02P27/06
摘要： An isolated bus inverter system including inverter circuits and a controller. The inverter circuits include a switching array to provide a polyphase alternating current (AC) signal to an output. Each of the inverter circuits includes an energy source isolated from the other inverter circuits of the inverter circuits or a reference isolated from the other inverter circuits of the inverter circuits. The controller is configured to generate timing signals for the inverter circuits to generate the AC signals for the output based on DC signals received from one or more rectifier circuits.
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公开(公告)号：US20230353043A1
公开(公告)日：2023-11-02
申请号：US18306062
申请日：2023-04-24
发明人： Jiqiang WAN , Andrew NOLAN , Timothy STOTT
IPC分类号： H02M1/38 , H02M7/483 , H02M1/08 , H03K17/284 , H03K17/687
CPC分类号： H02M1/385 , H02M7/4835 , H02M1/08 , H03K17/284 , H03K17/687
摘要： There is provided a switching valve for a voltage source converter, the switching valve including a number of modules, each module including at least one switching element and at least one energy storage device, each switching element and each energy storage device arranged to be combinable to selectively provide a voltage source, the switching valve including a controller programmed to selectively control the switching of the switching elements to select zero, one or more of the modules to contribute a or a respective voltage to a switching valve voltage. The controller is programmed to selectively control the switching of the switching elements to carry out a switching operation and to apply a time delay if a charging current is flowing through the modules and/or apply a time delay to a start time of the switching operation if a discharging current is flowing through the modules.
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公开(公告)号：US20230318487A1
公开(公告)日：2023-10-05
申请号：US18121639
申请日：2023-03-15
发明人： Daiki Mizuguchi
CPC分类号： H02M7/537 , H02P27/06 , H02M1/385 , H02J7/007 , H02M1/0003
摘要： In discharging of electric power in a smoothing capacitor arranged between a battery and an inverter provided with three-phase power modules, a control circuit alternately and periodically switches between all-phase upper on control and all-phase lower on control. With a power module in which a current flows in a direction from a motor toward the inverter among the three-phase power modules being defined as a negative current module and a power module in which a current flows in a direction from the inverter toward the motor being defined as a positive current module, during a period during which switching between all-phase lower on control and all-phase upper on control is made, the control circuit performs, for a prescribed time period, discharging processing for setting the negative current module to the lower on state and for setting the positive current module to the upper on state.
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公开(公告)号：US20240322677A1
公开(公告)日：2024-09-26
申请号：US18317458
申请日：2023-05-15
摘要： The present disclosure relates to a charge pump circuit with a six-phase clock. The charge pump circuit comprises a six-phase clock circuit and a gate boosting charge pump configured to receive a plurality of clock signals from the six-phase clock circuit. The six-phase clock circuit includes provides a first clock signal, a second clock signal, a third clock signal, a fourth clock signal, a fifth clock signal, and a sixth clock signal. The gate boosting charge pump is configured to enable a charge-sharing operation to share the stored amount of charges between a plurality of parasitic capacitors. The six-phase clock circuit is configured to provide a dead time between each of the first, second, third, fourth, fifth and sixth clock.
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公开(公告)号：US20240171067A1
公开(公告)日：2024-05-23
申请号：US18379264
申请日：2023-10-12
发明人： Zhongwang Yang , Xueliang Chang , Mingjie Shan
CPC分类号： H02M1/385 , H02M3/33592
摘要： An integrated circuit and a converter having the same are provided. The converter further includes a first switch, and the integrated circuit includes a second switch and a sampling processing circuit. The control signals of the first and second switches are complementary, and the control signal of the second switch has a dead time. The sampling processing circuit is for sampling the voltage on the second switch to obtain a duration of the dead time and generating the digital signal according to the duration of the dead time. The digital signal is used to adjust the duration of the dead time.
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