Datasheet

Sense resistor
voltage
45mV
120mV
Fault
200 ns
Threshold90 to110
mV
12 V Gate
3.3 V
Gate
Depends on
Gate Capacitor
Fast Trip Fault
0 mV
TPS2363
SLUS680B –JANUARY 2006–REVISED JANUARY 2010 www.ti.com
Fast Trip
Fast trip, shown in Figure 5, normally allows twice the fault current and allows a high current fault for 100 ns, if
the fault setting is 6 A the system may see 6 A to 12 A for up to the fault time which is normally around 10 ms
depending on the fault capacitor selection. At 12-A current and higher the slot shuts off after 100 ns, the peak
current is only limited by the R
DS(on)
of the power FET and the sense resistor used for the hot plug. The system
power has to be designed for these current loads without the system voltage dropping out of range for the other
components in the system.
Figure 5. Fast Trip Fault
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