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19018452. Transient Stabilized SOI FETs (pSemi Corporation)

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Transient Stabilized SOI FETs

Organization Name

pSemi Corporation

Inventor(s)

Robert Mark Englekirk of Littleton CO US

Keith Bargroff of San Diego CA US

Christopher C. Murphy of Lake Zurich IL US

Tero Tapio Ranta of San Diego CA US

Simon Edward Willard of Irvine CA US

Transient Stabilized SOI FETs

This abstract first appeared for US patent application 19018452 titled 'Transient Stabilized SOI FETs

Original Abstract Submitted

Integrated circuits (ICs) that avoid or mitigate creation of changes in accumulated charge in a silicon-on-insulator (SOI) substrate, particularly an SOI substrate having a trap rich layer. In one embodiment, a FET is configured such that, in a standby mode, the FET is turned OFF while maintaining essentially the same Vas during an active mode. In another embodiment, a FET is configured such that, in a standby mode, current flow through the FET is interrupted while maintaining essentially the same Vas during the active mode. In another embodiment, a FET is configured such that, in a standby mode, the FET is switched into a very low current state (a “trickle current” state) that keeps both Vand Vclose to their respective active mode operational voltages. Optionally, S-contacts may be formed in an IC substrate to create protected areas that encompass FETs that are sensitive to accumulated charge effects.

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