公开(公告)号：US20220057446A1

公开(公告)日：2022-02-24

申请号：US17001131

申请日：2020-08-24

Applicant: STMicroelectronics International N.V.

Inventor： Pravesh Kumar Saini ,  Shashawat

IPC: G01R31/28 ,  G01R31/52 ,  H03K19/20 ,  H03K17/687

Abstract: An on chip leakage-current detection device including a first inverter where the magnitude of delay of the output signal of the first inverter is determined by a leakage current of a target device. The leakage-current detection device further includes: a capacitor that is charged by the output signal of the first inverter; a second inverter coupled to capacitor that switches states when the capacitor is charged to a switching level; an odd number of additional inverters coupled in a sequence with a second-inverter output. The output of the leakage-current detection device has a frequency proportional to the leakage of the target device.