Using topological features to lower the blowing current needed f

Details Using topological features to lower the blowing current needed f Using topological features to lower the blowing current needed f

1998-03-11

2000-02-22

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

438 13, 438132, 438281, 438467, 257774, H02H 504, H01L 2348

Patent

active

06028756&

ABSTRACT:
An integrated circuit includes topological features for weakening or otherwise modifying a blowable fuse in order to decrease the current needed to blow the fuse. This allows a decrease in the size of the circuit components which are needed to supply the current for blowing the fuse, in turn allowing compaction of the layout of the circuitry needed to blow the fuse. To this end, topological features are used to deform the shape of or otherwise modify the fuse, in turn increasing the resistance of the fuse or introducing flaws that allow the fuse to blow at a lower current.

REFERENCES:
patent: 4536949 (1985-08-01), Takayama et al.
patent: 5235335 (1993-08-01), Hester et al.
patent: 5353028 (1994-10-01), de Wit et al.
patent: 5552338 (1996-09-01), Nang
de Wit et al., A Low-Power 12-b Analog-to-Digital Converter with On-Chip Precision Trimming IEEE Journal of Solid-State Circuits, vol. 28, No. 4, Apr. 1993, pp. 455, 458-461.
Gene Vance, Post-Package Trim Increases IC Reliability, Electronic Engineering Times Sep. 8, 1997, p. 70.
Gail Robinson, PROM Fuse Design Scales to Sub-0.25 Micron, Electronic Engineering Times, Sep. 29, 1997, p. 44.

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