公开(公告)号：US20240022161A1

公开(公告)日：2024-01-18

申请号：US17865482

申请日：2022-07-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hong Nguyen ,  Michael Z. Pieszala ,  Yilun Luo ,  Khorshed Mohammed Alam ,  Sanjeev M. Naik ,  Benjamin S. Ngu

IPC: H02M1/08 ,  H02M7/5395 ,  H03K17/16

CPC classification number: H02M1/08 ,  H02M7/5395 ,  H03K17/16

Abstract: A variable current gate driver for a transistor includes a first current control device having a first controllable output current. The first current control device is electrically connected between a first bus and an activator of the transistor, and a second current control device having a second controllable output current. The second current control device is electrically connected between the activator of the transistor and a second bus. A controller is operatively connected to the first and second current control devices to control the first and second controllable output currents to control the first and second current control devices to control activation of the transistor via the activator. The controller is operative to control the first and second current control devices to control a slew rate of the transistor.

公开(公告)号：US12212227B2

公开(公告)日：2025-01-28

申请号：US17865482

申请日：2022-07-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hong Nguyen ,  Michael Z. Pieszala ,  Yilun Luo ,  Khorshed Mohammed Alam ,  Sanjeev M. Naik ,  Benjamin S. Ngu

IPC: H02M1/08 ,  H02M1/00 ,  H02M7/5395 ,  H03K17/04 ,  H03K17/16 ,  H02M7/5387 ,  H03K17/041 ,  H03K17/042

Abstract: A variable current gate driver for a transistor includes a first current control device having a first controllable output current. The first current control device is electrically connected between a first bus and an activator of the transistor, and a second current control device having a second controllable output current. The second current control device is electrically connected between the activator of the transistor and a second bus. A controller is operatively connected to the first and second current control devices to control the first and second controllable output currents to control the first and second current control devices to control activation of the transistor via the activator. The controller is operative to control the first and second current control devices to control a slew rate of the transistor.

公开(公告)号：US20240022946A1

公开(公告)日：2024-01-18

申请号：US18476738

申请日：2023-09-28

Applicant: GM Global Technology Operations LLC

Inventor： Yilun Luo ,  Khorshed Mohammed Alam ,  Eric B. Gach ,  Hong Nguyen ,  Chandra S. Namuduri ,  Rashmi Prasad ,  Junghoon Kim

IPC: H04W28/02 ,  H04W8/24 ,  H04W28/086

CPC classification number: H04W28/0205 ,  H04W28/0215 ,  H04W8/245 ,  H04W28/086

Abstract: A slew rate controllable system for powering an electric machine. The system may include a plurality of power transistors operable for converting a direct current (DC) input into an alternating current (AC) output suitable for electrically powering the electric machine. The system may further include a gate drive system operable for controlling a slew rate associated with transitioning the power transistors between the opened and closed states.