ELECTRONIC FUSE USING RESETTABLE POLY FUSE FOR OVER CURRENT PROTECTION

This paper presents a new technique to deal with the high load currents or fluctuating currents using poly fuse as its major component. Poly fuse is a resettable fuse which goes on increasing its resistance, blocking the excess current until the current is back to normal. Once the current is under normal conditions, the resistance stabilizes and the path between supply and load is reconnected. The proposed work also uses a reed relay which breaks the path exactly at the specified rating, allowing a fast switch. The combination of poly fuse and reed relay provides more efficient outputs as compared to traditional circuit breakers. The fast-switching action, accurate results and the smaller size makes poly fuse more suitable for most of the power devices.

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10.4: Aerosil Gels-Dispersed Blue-Phase Liquid Crystals: A New Technique to Control the Electro-Optical Behavior of a Fast-Switching Display

SID Symposium Digest of Technical Papers ◽

10.1002/j.2168-0159.2012.tb05723.x ◽

2012 ◽

Vol 43 (1) ◽

pp. 109-112 ◽

Cited By ~ 4

Author(s):

Jeoung-Yeon Hwang ◽

Liang-Chy Chien

Keyword(s):

Liquid Crystals ◽

New Technique ◽

Fast Switching ◽

Phase Liquid ◽

Blue Phase ◽

A New Technique ◽

Optical Behavior

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Failure Analysis on Integrated Power Devices

ISTFA 2012: Conference Proceedings from the 38th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2012p0211 ◽

2012 ◽

Author(s):

Arthur Chiang ◽

David Le ◽

Huixian Wu

Keyword(s):

Laser Ablation ◽

Failure Analysis ◽

Power Management ◽

New Technique ◽

Development Phase ◽

Power Devices ◽

Plasma Etch ◽

Compact Size ◽

A New Technique

Abstract Integrated power devices (IPD, IC+MOSFETs) have gained popularity for their excellent power management performance and compact size. During the development, it was soon found that exposing the multi-die device for debug could be challenging. In the article, we will show how the traditional decapsulation method fails to expose the device properly for follow up analysis. We will then present a new technique using laser ablation + chemical/plasma etch that proves to work for IPD products. We will then present a complete FA example combining this decapsulation technique and many other advanced FA techniques to solve an elusive failure during the development phase of an IPD product.

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