EVM
Current Probe
VOUT
FAULT
5
Q
Oscilloscope
CH1
CH2
CH3
CH4
V
V
Voltage Probe
5 V
0
Ÿ
External
Switch
J6
+
OUT
í
+
IN
í
Setup and Operation
13
SLVUAT7 – October 2016
Copyright © 2016, Texas Instruments Incorporated
TPS2553Q1EVM (HVL125A) Precision Current Limiting Switch User Guide
Figure 13. Test Setup for Short-Circuit Output Current-Limit
shows the load transient where the resistance of the load changes from 5 ohms to 0 ohms
(output short-circuit). After the fault pin is asserted low, the device begins to thermal cycle.
shows the device recovering when the 5-ohm load is reapplied. The device exits the thermal cycling stage
and returns to a current of around 1 A.
