-
公开(公告)号：US11146108B2
公开(公告)日：2021-10-12
申请号：US16381367
申请日：2019-04-11
发明人： Sichao Liu , Junxiao Chen , Gang Dai
摘要： A device comprises a first current sense apparatus coupled to a first switching element of a power conversion apparatus, a second current sense apparatus coupled to a second switching element of the power conversion apparatus and a current sense processing apparatus configured to receive detected current signals from the first current sense apparatus and the second current sense apparatus, and generate an average current signal and a peak current signal.
-
公开(公告)号：US20230163759A1
公开(公告)日：2023-05-25
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.
-
公开(公告)号：US11552632B1
公开(公告)日：2023-01-10
申请号：US17457141
申请日：2021-12-01
发明人： Junxiao Chen , Yingying Yang
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.
-
公开(公告)号：US11223237B2
公开(公告)日：2022-01-11
申请号：US16580870
申请日：2019-09-24
发明人： Zeng Li , Junxiao Chen , Jinbiao Huang , Xintao Wang
摘要： An apparatus comprises a rectifier configured to convert an alternating current voltage into a direct current voltage, wherein the alternating current voltage is generated by a receiver coil configured to be magnetically coupled to a transmitter coil of a wireless power transfer system, a high efficiency power converter connected to the rectifier, the high efficiency power converter comprising a first stage and a second stage connected in cascade and a controller configured to detect a plurality of operating parameters and generate a control signal applied to a control loop of the first stage.
-
公开(公告)号：US20210359552A1
公开(公告)日：2021-11-18
申请号：US17387022
申请日：2021-07-28
发明人： Zeng Li , Junxiao Chen , Fengyu He
摘要： A method includes configuring a high voltage charging system to operate in a wireless charging mode to charge a battery after a power source has been disconnected from the high voltage charging system, wherein the high voltage charging system comprises a rectifier, a first power converter, a second power converter connected in cascade, and a load switch connected between a voltage bus and a power port configured to be connected to the power source, and configuring the high voltage charging system to operate in a wired charging mode to charge the battery after the power source has been connected to the high voltage charging system.
-
公开(公告)号：US11251657B2
公开(公告)日：2022-02-15
申请号：US17093959
申请日：2020-11-10
发明人： Junxiao Chen , Jinbiao Huang , Zeng Li
摘要： A method includes configuring a hybrid converter to operate in a hybrid mode comprising four operating phases in response to an input voltage of the hybrid converter greater than a first threshold, configuring the hybrid converter to operate in a buck mode comprising two operating phases in response to the input voltage of the hybrid converter less than a second threshold, and configuring the hybrid converter to operate in a charge pump mode comprising two operating phases in response to the input voltage of the hybrid converter less than the first threshold and greater than the second threshold.
-
公开(公告)号：US11095158B2
公开(公告)日：2021-08-17
申请号：US16587193
申请日：2019-09-30
发明人： Junxiao Chen , Gang Dai , Jinbiao Huang
IPC分类号： H02J50/12 , H02M7/219 , H02M7/5387 , H02J7/02
摘要： An apparatus includes a first switch and a second switch connected in series between a first voltage bus and a second voltage bus, wherein a common node of the first switch and the second switch is connected to a first terminal of a first coil magnetically coupled to a second coil, and a third switch and a fourth switch connected in series between the first voltage bus and the second voltage bus, wherein a common node of the third switch and the fourth switch is coupled to a second terminal of the first coil, and wherein a gate of the first switch is controlled by a first signal derived from a signal on the common node of the third switch and the fourth switch, and a gate of the third switch is controlled by a second signal derived from a signal on the common node of the first switch and the second switch.
-
公开(公告)号：US20210083520A1
公开(公告)日：2021-03-18
申请号：US17093959
申请日：2020-11-10
发明人： Junxiao Chen , Jinbiao Huang , Zeng Li
摘要： A method includes configuring a hybrid converter to operate in a hybrid mode comprising four operating phases in response to an input voltage of the hybrid converter greater than a first threshold, configuring the hybrid converter to operate in a buck mode comprising two operating phases in response to the input voltage of the hybrid converter less than a second threshold, and configuring the hybrid converter to operate in a charge pump mode comprising two operating phases in response to the input voltage of the hybrid converter less than the first threshold and greater than the second threshold.
-
公开(公告)号：US11791664B2
公开(公告)日：2023-10-17
申请号：US16922247
申请日：2020-07-07
发明人： Min Yang , Zeng Li , Junxiao Chen , Wei Zheng , Zhijun Luo
摘要： A method includes configuring a wireless power transfer system to operate in a sleep mode to reduce a quiescent current of the wireless power transfer system, configuring the wireless power transfer system to operate in a magnetic detection mode, wherein in the magnetic detection mode, an excitation is applied to a resonant tank of the wireless power transfer system, detecting a signal having a resonant attenuation envelope, wherein the signal is generated by the resonant tank, and configuring the wireless power transfer system to operate in an active mode after finding an object is magnetically coupled to the wireless power transfer system.
-
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.
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.015 秒)
