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About information presented in this cross reference

The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
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Comparison of eFuse IC performance with conventional fuses

Only the eFuse IC cuts off the current path at high speed and does not allow a large current to flow.

Results of short circuit protection operation

 

eFuse IC

(TCKE812NL)

Polyfuse

Chip fuse

Rated current

3 A (Setting)

3.1 A (Rated)

3 A (Rated)

Interruption time

2 μs

2.9 S

7 μs

Protective operation review

Results of short circuit protection operation

Results of short circuit protection operation

Results of short circuit protection operation

It was confirmed that a large current of 70A or more flowed momentarily in the poly fuse and chip fuse, and the chip fuse was broken.

The figure above shows the result of comparing the short circuit protection performance between the eFuse IC and the conventional fuse (poly fuse, chip fuse).

We were checking how long the output current  turned off when the output is short-circuited to GND.
(For comparison, the overcurrent settings of the eFuse IC, poly fuses, and chip fuse ratings were unified around 3A.)

As a result, the off time of the eFuse IC on the left side was about 2 μs, while that of the poly fuse in the middle figure was about 3 seconds, and that of the chip fuse in the right figure was about 7 μs.

The peak current was also suppressed to about 35A by the eFuse IC.
On the other hand, conventional fuses did not fit in the measurement range, and a large current of 70A or more flowed.

Basics of eFuse ICs

What is the semi-conductor fuse eFuse IC?
Advantages of Semiconductor-fuse eFuse IC (1)
Advantages of Semiconductor-fuse eFuse IC (2)
Advantages of Semiconductor-fuse eFuse IC (3)
Examples of applications where semiconductor fuses (eFuse ICs) are used
Overcurrent protection function (OCP)
Short circuit protection function
Overvoltage protection function (overvoltage clamp)
Slew rate control (Suppressing rush current)

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