Short circuit protection function

The short circuit protection function prevents excessive current from flowing by stopping operation when the power supply line or load is short-circuited due to some kind of abnormality. In TCKE800 / 805 / 812 series, if the output current is 1.6 times the current limit (ILIM) for a very short period of time, the output is judged to be short-circuited and this function operates.

Short circuit protection function
Short circuit protection waveform

Short circuit protection waveform

Because of the faster off-time, damage and destruction of the subsequent IC can be reduced

Toshiba eFuse IC uses a short circuit protection circuit (Fast trip function) that operates at high speed.

The above figure shows the operating waveform (*) of the simulated Fast trip function.
The simulation results show that the current is suppressed to near zero 150 ns (typ.) after the short circuit occurs.

* In the actual circuit, the operating waveform may differ due to the influence of parasitic resistance and capacitance such as wiring.

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)
Comparison of eFuse IC performance with conventional fuses
Examples of applications where semiconductor fuses (eFuse ICs) are used
Overcurrent protection function (OCP)
Overvoltage protection function (overvoltage clamp)
Slew rate control (Suppressing rush current)

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