公开(公告)号：US20250070771A1

公开(公告)日：2025-02-27

申请号：US18821912

申请日：2024-08-30

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：US11641196B2

公开(公告)日：2023-05-02

申请号：US17677292

申请日：2022-02-22

Applicant: pSemi Corporation

Inventor： Chengkai Luo

IPC: H03K17/04 ,  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：US20210265990A1

公开(公告)日：2021-08-26

申请号：US17164467

申请日：2021-02-01

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.