-
公开(公告)号：US20220247401A1
公开(公告)日：2022-08-04
申请号：US17677292
申请日：2022-02-22
Applicant: pSemi Corporation
Inventor： Chengkai Luo
IPC: H03K17/0412 , H03K17/693
Abstract: A method and apparatus is disclosed for maintaining a stable power supply to a circuit when activating/deactivating a switch in order to accelerate the switching time of the switch. The gate of a FET is coupled to a switch driver. The switch driver is powered by a positive power supply and a negative power supply. When the switch is to be activated/deactivated, the gate is first coupled to a reference potential (i.e., ground) for a “reset period” to reduce any positive/negative charge that has been accumulated in the FET. At the end of the reset period, the gate is then released from the reference potential and the switch driver drives the gate to the desired voltage level to either activate or deactivate the switch.
-
公开(公告)号：US20200186139A1
公开(公告)日：2020-06-11
申请号：US16703537
申请日：2019-12-04
Applicant: pSemi Corporation
Inventor： Chengkai Luo
IPC: H03K17/0412 , H03K17/693
Abstract: A method and apparatus is disclosed for maintaining a stable power supply to a circuit when activating/deactivating a switch in order to accelerate the switching time of the switch. The gate of a FET is coupled to a switch driver. The switch driver is powered by a positive power supply and a negative power supply. When the switch is to be activated/deactivated, the gate is first coupled to a reference potential (i.e., ground) for a “reset period” to reduce any positive/negative charge that has been accumulated in the FET. At the end of the reset period, the gate is then released from the reference potential and the switch driver drives the gate to the desired voltage level to either activate or deactivate the switch.
-
公开(公告)号：US20190036520A1
公开(公告)日：2019-01-31
申请号：US15659311
申请日：2017-07-25
Applicant: pSemi Corporation
Inventor： Chengkai Luo
IPC: H03K17/0412
CPC classification number: H03K17/04123 , H03K17/693
Abstract: A method and apparatus is disclosed for maintaining a stable power supply to a circuit when activating/deactivating a switch in order to accelerate the switching time of the switch. The gate of a FET is coupled to a switch driver. The switch driver is powered by a positive power supply and a negative power supply. When the switch is to be activated/deactivated, the gate is first coupled to a reference potential (i.e., ground) for a “reset period” to reduce any positive/negative charge that has been accumulated in the FET. At the end of the reset period, the gate is then released from the reference potential and the switch driver drives the gate to the desired voltage level to either activate or deactivate the switch.
-
公开(公告)号：US20230344421A1
公开(公告)日：2023-10-26
申请号：US18305888
申请日：2023-04-24
Applicant: pSemi Corporation
Inventor： Chengkai Luo
IPC: H03K17/0412 , H03K17/693
CPC classification number: H03K17/04123 , H03K17/693
Abstract: A method and apparatus is disclosed for maintaining a stable power supply to a circuit when activating/deactivating a switch in order to accelerate the switching time of the switch. The gate of a FET is coupled to a switch driver. The switch driver is powered by a positive power supply and a negative power supply. When the switch is to be activated/deactivated, the gate is first coupled to a reference potential (i.e., ground) for a “reset period” to reduce any positive/negative charge that has been accumulated in the FET. At the end of the reset period, the gate is then released from the reference potential and the switch driver drives the gate to the desired voltage level to either activate or deactivate the switch.
-
公开(公告)号：US10511297B2
公开(公告)日：2019-12-17
申请号：US15659311
申请日：2017-07-25
Applicant: pSemi Corporation
Inventor： Chengkai Luo
IPC: H03K17/687 , H03K17/0412 , H03K17/693
Abstract: A method and apparatus is disclosed for maintaining a stable power supply to a circuit when activating/deactivating a switch in order to accelerate the switching time of the switch. The gate of a FET is coupled to a switch driver. The switch driver is powered by a positive power supply and a negative power supply. When the switch is to be activated/deactivated, the gate is first coupled to a reference potential (i.e., ground) for a “reset period” to reduce any positive/negative charge that has been accumulated in the FET. At the end of the reset period, the gate is then released from the reference potential and the switch driver drives the gate to the desired voltage level to either activate or deactivate the switch.
-
Patent Agency Ranking
公开(公告)号：US10432238B1
公开(公告)日：2019-10-01
申请号：US16005589
申请日：2018-06-11
Applicant: pSemi Corporation
Inventor： Chengkai Luo , Fleming Lam
Abstract: Detuning and isolation techniques for a multiband tunable matching network used in multi-transceiver RF systems. Embodiments include an amplifier and a multiband tunable matching network (MN) coupled to the amplifier. The multiband tunable MN is configured to detune to an isolation OFF state from an ON state, wherein the match tuning in the isolation OFF state is different than match tuning in the ON state. In an example detuning, the match tuning in the isolation OFF state is in a different frequency band than a frequency band of match tuning in the ON state and is selected based on the frequency band of match tuning in the ON state.
-
公开(公告)号：US20250158606A1
公开(公告)日：2025-05-15
申请号：US19020957
申请日：2025-01-14
Applicant: PSEMI CORPORATION
Inventor： Chengkai Luo
IPC: H03K17/0412 , H03K17/693
Abstract: A method and apparatus is disclosed for maintaining a stable power supply to a circuit when activating/deactivating a switch in order to accelerate the switching time of the switch. The gate of a FET is coupled to a switch driver. The switch driver is powered by a positive power supply and a negative power supply. When the switch is to be activated/deactivated, the gate is first coupled to a reference potential (i.e., ground) for a “reset period” to reduce any positive/negative charge that has been accumulated in the FET. At the end of the reset period, the gate is then released from the reference potential and the switch driver drives the gate to the desired voltage level to either activate or deactivate the switch.
-
公开(公告)号：US12095450B2
公开(公告)日：2024-09-17
申请号：US18305888
申请日：2023-04-24
Applicant: pSemi Corporation
Inventor： Chengkai Luo
IPC: H03K17/04 , H03K17/0412 , H03K17/693
CPC classification number: H03K17/04123 , H03K17/693
Abstract: A method and apparatus is disclosed for maintaining a stable power supply to a circuit when activating/deactivating a switch in order to accelerate the switching time of the switch. The gate of a FET is coupled to a switch driver. The switch driver is powered by a positive power supply and a negative power supply. When the switch is to be activated/deactivated, the gate is first coupled to a reference potential (i.e., ground) for a “reset period” to reduce any positive/negative charge that has been accumulated in the FET. At the end of the reset period, the gate is then released from the reference potential and the switch driver drives the gate to the desired voltage level to either activate or deactivate the switch.
-
公开(公告)号：US11722162B1
公开(公告)日：2023-08-08
申请号：US17649717
申请日：2022-02-02
Applicant: pSemi Corporation
Inventor： Chengkai Luo , Payman Shanjani , Ravindranath D. Shrivastava
CPC classification number: H04B1/0466 , H01Q1/50 , H04B1/0458
Abstract: Fail-safe methods and devices to protect the receiver of a transceiver in the event of an antenna failure are disclosed. The described devices implement inductive and capacitive elements to replace switches and can be used in any communication system or electronic circuit where the protection of a portion of the device from higher power signals is required. The inductive elements can be implemented using already existing inductors that are constituents of the receiver matching network. Configurations with off-chip capacitive or inductive components are also possible.
-
公开(公告)号：US11264981B2
公开(公告)日：2022-03-01
申请号：US17164467
申请日：2021-02-01
Applicant: pSemi Corporation
Inventor： Chengkai Luo
IPC: H03K17/687 , H03K17/0412 , H03K17/693
Abstract: A method and apparatus is disclosed for maintaining a stable power supply to a circuit when activating/deactivating a switch in order to accelerate the switching time of the switch. The gate of a FET is coupled to a switch driver. The switch driver is powered by a positive power supply and a negative power supply. When the switch is to be activated/deactivated, the gate is first coupled to a reference potential (i.e., ground) for a “reset period” to reduce any positive/negative charge that has been accumulated in the FET. At the end of the reset period, the gate is then released from the reference potential and the switch driver drives the gate to the desired voltage level to either activate or deactivate the switch.
-
-
-
-
-
-
-
-
-
Search Results
13
records
(took 0.012 seconds)
