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PI2002-EVAL1 User Guide Rev 1.0 Page 8 of 11

7.0 Output short circuit test

7.1 Apply a short at one of the outputs. The short can be

applied electronically using a MOSFET connected

between Vout and Gnd or simply by connecting Vout

to Gnd. Monitor the voltage across the MOSFETs

[V(D1) – V(D2)] with differential probe if available.

Then measure the response time between when

[V(D1) – V(D2)] reaches the forward overcurrent

threshold (114 mV) and when the MOSFETs are

disconnected (or turned off). An example for PI2002

response time to an output short circuit is shown in

Figure 6.

Figure 6 – Plot of PI2002 response time to forward overcurrent detection