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公开(公告)号：US11750106B2
公开(公告)日：2023-09-05
申请号：US17384868
申请日：2021-07-26
发明人： Junxiao Chen , Gang Dai , Jinbiao Huang
CPC分类号： H02M3/3382 , H02J50/12 , H02M3/33573 , H02M7/219 , H02M7/5387 , H02M3/01
摘要： An apparatus includes a rectifier coupled to a coil of a wireless power transfer system, the rectifier comprising a first leg and a second leg, wherein the first leg comprises a first switch and a second switch connected in series between a first voltage bus and a second voltage bus, and the second leg comprise a third switch and a fourth switch connected in series between the first voltage bus and the second voltage bus, and wherein a gate drive signal of the first switch is derived from a signal in phase with a voltage on a first terminal of the coil, and a gate drive signal of the third switch is derived from a signal in phase with a voltage on a second terminal of the coil.
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公开(公告)号：US11750093B1
公开(公告)日：2023-09-05
申请号：US17893514
申请日：2022-08-23
发明人： Shuang Han , Rui Liu , Songnan Yang
CPC分类号： H02J7/345 , H02M1/088 , H02M3/07 , H02M3/072 , H02M3/158 , H02J2207/20 , H02J2207/50
摘要： The voltage conversion circuit includes an input terminal, an output terminal, a first energy storage branch, a second energy storage branch, a third energy storage branch and a controller. The input terminal is used to connect with the input power supply. The output terminal is used to connect to the load. The first energy storage branch is connected to the input terminal, the second energy storage branch and the third energy storage branch. The second energy storage branch is connected to the first energy storage branch. The three energy storage branches are connected to the output terminal. The first energy storage branch includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch and a fourth switch. The controller is connected with the first terminals of the switches of the first energy storage branch, the second energy storage branch and the third energy storage branch.
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公开(公告)号：US11742750B2
公开(公告)日：2023-08-29
申请号：US17498590
申请日：2021-10-11
发明人： Milind Chandra Gupta
CPC分类号： H02M1/4225 , H02M1/0003 , H02M3/155
摘要： A method includes comparing a ramp signal with an output signal of an error amplifier to determine an initial turn-on time of a boost converter, generating a turn-on time of the boost converter through multiplying the initial turn-on time by a predetermined constant greater than or equal to 1, and maintaining a switching frequency of the boost converter substantially constant through varying a value of the predetermined constant.
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公开(公告)号：US11699960B2
公开(公告)日：2023-07-11
申请号：US17498810
申请日：2021-10-12
发明人： Fuchun Zhan , Cheng Liu
CPC分类号： H02M7/4835 , H02M1/007 , H02M1/10 , H02M3/072 , H02M3/073
摘要： A power converter includes a plurality of switches coupled between an input bus and an output bus, a full bridge coupled between the output bus and ground, and a plurality of capacitors coupled between the plurality of switches and the full bridge, wherein one capacitor of the plurality of capacitors is connected to a midpoint of one leg of the full bridge through a switch.
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公开(公告)号：US11695408B2
公开(公告)日：2023-07-04
申请号：US18049691
申请日：2022-10-26
发明人： Junxiao Chen , Yingying Yang
CPC分类号： H03K17/165 , H03K5/12
摘要： A method includes detecting a signal on a switching node connected to a power switch, detecting a gate drive voltage of the power switch, during a gate drive process of the power switch, reducing a gate drive current based on a first comparison result obtained from comparing the signal with a first threshold, and during the gate drive process of the power switch, increasing the gate drive current based on a second comparison result obtained from comparing the gate drive voltage with a second threshold.
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公开(公告)号：US12132401B2
公开(公告)日：2024-10-29
申请号：US18056758
申请日：2022-11-18
发明人： Rui Liu , Sofjan Goenawan
摘要： An apparatus includes a PWM ramp generator coupled between a switching node of a power converter and a first input of a comparator, the PWM ramp generator including a first resistor and a first capacitor connected in series between the switching node and the first input of the comparator, and a second resistor and a second capacitor connected in parallel between the first input of the comparator and a feedback node, and a PFM control circuit including an error amplifier and a current zero crossing detection comparator, wherein the error amplifier is coupled between a second input of the comparator and a reference node, and the PFM control circuit is configured to generate gate drive signal for the power converter when the power converter is configured to operate in a PFM mode.
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公开(公告)号：US12126336B2
公开(公告)日：2024-10-22
申请号：US18530158
申请日：2023-12-05
申请人： Diodes Incorporated
发明人： Chiao-Shun Chuang , Ta-Chuan Kuo , Ke-Horng Chen
IPC分类号： H03K17/693 , H03K17/687
CPC分类号： H03K17/693 , H03K2017/6875 , H03K2217/0063 , H03K2217/0081
摘要： An apparatus includes a capacitive device configured to provide bias power for a high-side switch, a gate drive path having variable resistance connected between the capacitive device and a gate of the high-side switch, wherein the gate drive path having variable resistance is of a first resistance value in response to a turn-on of the high-side switch, and the gate drive path having variable resistance is of a second resistance value in response to a turn-off of the high-side switch, and wherein the second resistance value is greater than the first resistance value, and a control switch connected between the gate of the high-side switch and ground.
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公开(公告)号：US12081119B2
公开(公告)日：2024-09-03
申请号：US17531341
申请日：2021-11-19
发明人： Rui Liu
CPC分类号： H02M3/07 , H02M1/0003 , H02M1/0032 , H02M3/158
摘要： A control circuit is configured to control a switched capacitor converter to operate in a pulse frequency modulation (PFM) mode. The control circuit includes a one-shot circuitry configured to generate a one-shot pulse to drive the switched capacitor converter to operate in the PFM mode. A PFM mode comparator is coupled to the one-shot circuitry, and is configured to trigger, based on an output voltage of the switched capacitor converter, the one-shot circuitry to generate the one-shot pulse. The switched capacitor converter may be controlled to enter or exit the PFM mode operation based on a trailing current of a flying capacitor of the switched capacitor converter, an output current of the switched capacitor converter, a charging time duration of the flying capacitor when the switched capacitor converter is operating in the PFM mode, or a PFM switching period of the switched capacitor converter operating in the PFM mode.
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公开(公告)号：US12028980B2
公开(公告)日：2024-07-02
申请号：US17511039
申请日：2021-10-26
发明人： Rui Liu , Songnan Yang
CPC分类号： H05K1/181 , H01L25/16 , H02M1/08 , H02M3/07 , H05K1/113 , H05K3/3415 , H05K3/3436 , H05K3/3442 , H05K2201/10015 , H05K2201/10166 , H05K2201/10522 , H05K2201/10545
摘要： A switched capacitor converter package includes a semiconductor package on a first side of an electrical routing apparatus, a first capacitor and a second capacitor on a second side of the electrical routing apparatus, wherein the first capacitor and the second capacitor are adjacent to each other and connected in parallel, and a third capacitor and a fourth capacitor connected on the second side of the electrical routing apparatus, wherein the third capacitor and the fourth capacitor are adjacent to each other and connected in parallel.
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公开(公告)号：US12021402B2
公开(公告)日：2024-06-25
申请号：US17402133
申请日：2021-08-13
发明人： Rui Liu
CPC分类号： H02J7/0019 , H02J7/0016 , H02J7/007182 , H02J7/345 , H02M1/0095 , H02M3/073 , H02J2207/20 , H02J2207/50
摘要： A method includes turning on a first group of switches of a switched capacitor converter in a battery charging system to establish a first conductive path, and configuring a system voltage at a system bus to charge a first flying capacitor to a predetermined voltage level through the first conductive path, wherein the predetermined voltage level is less than the system voltage, and turning on a second group of switches of the switched capacitor converter in the battery charging system to establish a second conductive path to charge a battery, wherein a sum of a voltage across the first flying capacitor and the system voltage is applied to the battery.
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