公开(公告)号：US20250060409A1

公开(公告)日：2025-02-20

申请号：US18235156

申请日：2023-08-17

Applicant: Silicon Laboratories Inc.

Inventor： Timothy Thomas Rueger ,  DeWitt Clinton Seward ,  Gang Yuan

IPC: G01R31/30 ,  G01R19/165 ,  G01R31/40 ,  G06F21/75

Abstract: Positive and negative glitch detectors detect glitches on a supply voltage node. The positive glitch detector has a capacitor and a resistor serially coupled between the supply voltage node and ground. An amplifier is coupled to a first node between the capacitor and resistor. A positive glitch results in the glitch on the first node (normally biased low) and generation of a clock pulse by the amplifier that causes a latch to assert its output to indicate the positive glitch. The negative glitch detector has a capacitor and resistor coupled in parallel between the supply voltage node and a second node. A negative glitch on the supply voltage node decreases the voltage on the second node (normally biased high) and an inverting amplifier coupled to the second node generates a clock pulse to cause a latch to assert its output to indicate the negative voltage glitch.

公开(公告)号：US11366898B2

公开(公告)日：2022-06-21

申请号：US16686486

申请日：2019-11-18

Applicant: Silicon Laboratories Inc.

Inventor： Jeffrey Lee Sonntag ,  Timothy Thomas Rueger

IPC: G06F21/55 ,  H01L23/00 ,  G06F21/72

Abstract: In one form, an integrated circuit includes a plurality of electromagnetic fault injection (EMFI) sensors and a security management circuit. Each EMFI sensor includes a sense loop having a conductor around a corresponding portion of logic circuitry whose operation is affected by an electromagnetic pulse, and a detector circuit coupled to the sense loop and having an output for providing a pulse detection signal in response to a pulse of at least a predetermined magnitude. The security management circuit performs a protection operation to secure the integrated circuit in response to an activation of a corresponding pulse detection signal of one of the plurality of EMFI sensors.

公开(公告)号：US20210150027A1

公开(公告)日：2021-05-20

申请号：US16686486

申请日：2019-11-18

Applicant: Silicon Laboratories Inc.

Inventor： Jeffrey Lee Sonntag ,  Timothy Thomas Rueger

IPC: G06F21/55 ,  G06F21/72 ,  H01L23/00

Abstract: In one form, an integrated circuit includes a plurality of electromagnetic fault injection (EMFI) sensors and a security management circuit. Each EMFI sensor includes a sense loop having a conductor around a corresponding portion of logic circuitry whose operation is affected by an electromagnetic pulse, and a detector circuit coupled to the sense loop and having an output for providing a pulse detection signal in response to a pulse of at least a predetermined magnitude. The security management circuit performs a protection operation to secure the integrated circuit in response to an activation of a corresponding pulse detection signal of one of the plurality of EMFI sensors.