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公开(公告)号：US20240250602A1
公开(公告)日：2024-07-25
申请号：US18596214
申请日：2024-03-05
发明人： Ionel Jitaru
CPC分类号： H02M1/083 , H02M1/4258 , H02M3/155 , H02M3/335 , H02M3/33553 , H02M3/33592 , H01F38/42 , H02M1/0058 , H02M1/342 , Y02B70/10
摘要： A switching power conversion apparatus for converting power from an input voltage source to a load includes first and second switches connected to a switching node. An inductive element has a magnetizing current connected to the node, and the inductive element is connected to deliver energy via the first and second switches from the input voltage to the load during a succession of power conversion cycles. A capacitance connected to the node resonates with the inductive element to cause parasitic oscillation. A clamp subcircuit across the inductive element contains an auxiliary switch to trap energy and prevent parasitic oscillation, wherein the auxiliary switch is complementary to the first switch. A controlled voltage source injects energy in the inductive element, when the auxiliary switch turns off to discharge the parasitic capacitance by using trapped energy in the inductive element in addition to injected energy from the controlled voltage source.
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公开(公告)号：US12047006B2
公开(公告)日：2024-07-23
申请号：US17531812
申请日：2021-11-22
发明人： Yi-Lun Shen , Jian-Heng Guo
CPC分类号： H02M3/33569 , H02M1/08
摘要： A flyback converter includes a primary winding, a main switch, a charging switch, a primary side controller and an energy storage device. The primary winding receives an input power; the primary side controller has a power input terminal and provides a first control signal and a second control signal to the main switch and the charging switch; after the main switch is turned off, the charging switch maintains turned on during a charging period. During the charging period, the input power passes through the primary winding and the charging switch, and stores a first portion of the input power in the energy storage device as a power supply energy; the power input terminal is coupled to the energy storage device, and the primary side controller receives the power supply power from the energy storage device through the power input terminal.
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公开(公告)号：US12046997B2
公开(公告)日：2024-07-23
申请号：US17192275
申请日：2021-03-04
发明人： Jong Woo Kim , Peter Mantovanelli Barbosa , Hao Sun , Minli Jia
CPC分类号： H02M3/01 , H02M1/083 , H02M3/3353 , H02M1/0058
摘要： The present disclosure provides a single- and multi-phase DC/DC converter and a control method thereof that can offer a wide range of voltage conversion ratio by substantially reducing the switching frequency range, thereby resulting in performance improvement. Reduction in the switching frequency range is achieved by controlling the output voltage or current with a combination of variable duty ratio, variable frequency, and delay-time control.
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公开(公告)号：US20240243666A1
公开(公告)日：2024-07-18
申请号：US18409868
申请日：2024-01-11
申请人： Takeshi SATO , Minoru KADO
发明人： Takeshi SATO , Minoru KADO
CPC分类号： H02M3/33569 , H02M1/08
摘要： A switching power supply device includes a secondary-side control circuit including a switching control circuit that generates a voltage for ON-OFF control of a switching element for synchronous rectification. The secondary-side control circuit includes an external terminal to which a drain voltage of the switching element is input, a power supply terminal to which a voltage rectified by the switching element is input, a peak hold circuit that holds a peak of the drain voltage input to the external terminal, and an abnormality detection circuit that operates based on the voltage at the power supply terminal or a voltage derived from the voltage at the power supply terminal and a holding voltage of the peak hold circuit, and outputs an abnormality detection signal when detecting an abnormal state in which the voltage at the power supply terminal decreases or no voltage is input to the power supply terminal.
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公开(公告)号：US20240243665A1
公开(公告)日：2024-07-18
申请号：US18156055
申请日：2023-01-18
发明人： Vipin Pala
CPC分类号： H02M3/33507 , H02M1/08
摘要： A composite switch circuit having a normally-on power switch device and a normally-off power switch device in cascode configuration is discussed. The composite switch circuit is with reduced power loss by biasing a common connection of the source terminal of the normally-on power switch device and the drain terminal of the normally-off power switch device with a low voltage supply during a reverse recovery process of the composite switch circuit.
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公开(公告)号：US20240243658A1
公开(公告)日：2024-07-18
申请号：US18521225
申请日：2023-11-28
发明人： Ryuji YAMADA
IPC分类号： H02M3/155 , G01R19/175 , H02M1/08 , H03K5/24
CPC分类号： H02M3/155 , G01R19/175 , H02M1/08 , H03K5/24
摘要： A current detection circuit for a power supply circuit configured to generate an output voltage from an input voltage thereof, the power supply circuit including an inductor configured to receive the input voltage, a transistor configured to control an inductor current flowing through the inductor, and a diode coupled to a first node that is a node at which the inductor and the transistor are coupled. The current detection circuit is configured to detect the inductor current, and includes: a first capacitor coupled to the first node; and a second capacitor provided between the first capacitor and a ground, the second capacitor being coupled in series with the first capacitor.
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公开(公告)号：US12040725B2
公开(公告)日：2024-07-16
申请号：US17911419
申请日：2020-04-10
发明人： Shota Hanioka , Masahiro Iezawa
IPC分类号： H02M7/5387 , H02M1/00 , H02M1/08 , H02M1/38 , H02P27/06
CPC分类号： H02M7/5387 , H02M1/0009 , H02M1/08 , H02M1/385 , H02P27/06
摘要： A power conversion device includes a switching signal generation unit that generates switching signals so that time points of at least one of pairs synchronize with each other. A first pair includes a rising time point at a first junction point of a first single-phase leg, and a falling time point at a second junction point of a second single-phase leg. A second pair includes a falling time point at the first junction point and a rising time point at the second junction point. The switching signal generation unit determines time points to turn on or turn off for upper arm switching element and a lower arm switching element based on phase currents respectively at a rising time point and at a falling time point of the terminal voltages.
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公开(公告)号：US12040720B2
公开(公告)日：2024-07-16
申请号：US17704442
申请日：2022-03-25
发明人： Yen-Shin Lai , Yong-Yi Huang , Xiang-Yu Wu , You-Quan Dong , Shu-Hao Wu
CPC分类号： H02M3/33573 , H02M1/0035 , H02M1/08 , H02M3/01 , H02M3/33576
摘要： A resonance conversion device and a universal serial bus circuit are provided. The resonance conversion device includes an input filter circuit, a full-bridge LLC converter circuit, a transformer circuit, a rectifier filter circuit, and a controller. The controller is configured to determine whether an indication voltage of a voltage command is less than or equal to a threshold value and to perform the following steps: in response to the indication voltage being less than or equal to the threshold value, controlling the full-bridge LLC converter circuit into a half-bridge operation mode, and regulating the DC output voltage by performing half-bridge burst mode control on the full-bridge LLC converter circuit based on the DC output voltage; and in response to the indication voltage being greater than the threshold value, regulating the DC output voltage by performing full-bridge burst mode control on the full-bridge LLC converter circuit based on the DC output voltage.
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公开(公告)号：US12033922B2
公开(公告)日：2024-07-09
申请号：US17557138
申请日：2021-12-21
申请人： DENSO CORPORATION
发明人： Akihiro Fukatsu , Noboru Nagase , Toshihiro Nagaya
IPC分类号： H01L23/495 , H01L23/00 , H01L23/31 , H01L25/07 , H01L25/16 , H02M1/08 , H02M7/537 , H02P27/06 , H05K1/18
CPC分类号： H01L23/49537 , H01L23/49575 , H01L25/072 , H01L25/162 , H02M1/08 , H02M7/537 , H05K1/181 , H01L23/3121 , H01L23/49513 , H01L24/32 , H01L24/37 , H01L24/40 , H01L24/48 , H01L24/73 , H01L2224/32245 , H01L2224/37147 , H01L2224/3716 , H01L2224/40175 , H01L2224/40499 , H01L2224/48245 , H01L2224/73221 , H01L2224/73263 , H01L2924/01029 , H01L2924/01047 , H01L2924/0105 , H01L2924/01082 , H01L2924/014 , H01L2924/10253 , H01L2924/10272 , H01L2924/13055 , H01L2924/13091 , H01L2924/1433 , H02P27/06 , H05K2201/10015 , H05K2201/10166
摘要： A semiconductor device includes: first and second semiconductor elements each having two electrodes respectively disposed on two surfaces; two first terminals respectively connected to the two electrodes of the first semiconductor element and arranged side by side in one direction; two second terminals respectively connected to the two electrodes of the second semiconductor element, and arranged side by side in the one direction to be adjacent to the two first terminals; and a sealing resin portion covering the first and second semiconductor elements and the first and second terminals in a state where facing surfaces of the first and second terminals are exposed from the sealing resin portion. The facing surfaces of the two first terminals have different area ratios, the facing surfaces of the two second terminals have different area ratios, and one of the first terminals is arranged adjacent to both the two second terminals.
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公开(公告)号：US20240223085A1
公开(公告)日：2024-07-04
申请号：US18607702
申请日：2024-03-18
发明人： Chia-Chun Chang , Alan Roth , Eric Soenen , Tysh-Bin Liu
CPC分类号： H02M3/158 , H02M1/08 , H02M1/38 , H02M3/157 , H02M1/0009 , H02M1/0029
摘要： Devices and methods are provided for controlling dead-time of a direct current to direct current (DC-DC) converter. A control circuit includes a first transistor having a source/drain terminal coupled to an output voltage of the DC-DC converter configured to provide current based on the output voltage. The control circuit also includes a digital up/down counter having an output terminal electrically coupled to an input terminal of a delay cell of the DC-DC converter. A current sensing circuit of the control circuit is electrically coupled to an input terminal of the digital up/down counter configured to receive the current and drive the digital up/down counter based on the current.
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