公开(公告)号：US20210305927A1

公开(公告)日：2021-09-30

申请号：US16833871

申请日：2020-03-30

Applicant: Silicon Laboratories Inc.

Inventor： Asa S. Kirby ,  John N. Wilson

IPC: H02P27/06 ,  H02H7/08 ,  H02K11/20 ,  H02P29/024

Abstract: A system for controlling a high-power drive device includes a fault detection integrated circuit product configured to provide an indication of a fault condition associated with the high-power drive device to a first terminal in a first voltage domain in response to detecting the fault condition in a second voltage domain. The system includes a gate driver controller integrated circuit product configured to drive a second terminal coupled to a control node in a second voltage domain based on a control signal and an enable signal received from a third terminal in the first voltage domain. The second voltage domain is higher than the first voltage domain. The system may include a redundant fault reporting integrated circuit product or an additional fault detection integrated circuit product configured to detect a second fault condition in the second voltage domain that is different from the fault condition.

公开(公告)号：US10917081B1

公开(公告)日：2021-02-09

申请号：US16815435

申请日：2020-03-11

Applicant: Silicon Laboratories Inc.

Inventor： Long Nguyen ,  Ion C. Tesu ,  Michael L. Duffy ,  John N. Wilson

IPC: H03K17/08 ,  H03K17/0812 ,  H02M1/08 ,  H03K17/18 ,  H03K17/082 ,  H03K17/081 ,  H03K17/16

Abstract: An apparatus controls a high-power drive device external to a package of a gate driver circuit. A first circuit charges the control node over a first length of time in response to a first signal through the first node indicating an absence of a fault condition and a first level of a control signal. A second circuit discharges the control node over a second length of time in response to a second signal through the second node indicating the absence of the fault condition and a second level of a control signal. A third circuit includes a current amplifier and is configured as a soft shutdown path to discharge the control node over a third length of time in response to the first signal through the first node indicating a presence of the fault condition. The third length of time is different from the second length of time.