Texas Instruments TPS40003 - Manual (Page 13)

SLUU130A – September 2002 – Revised February 2003
13 TPS40003-Based 5-A Converter in Less Than One Square Inch
Circuit operation with an output short circuit is shown in Figure 7. After each restart into a short circuit the pulses
terminate for a period of approximately 6 ms. This causes the input power to collapse to minuscule levels, and
the circuit is protected.
t – Time – 1 ms/div
2 V/div
SHORT CIRCUIT OPERATION
Figure 7.
Figure 8 shows the output voltage ripple which is approximately half the 24-mV limit.
t – Time – 500 ns/div
10 mV/div
OUTPUT VOLTAGE RIPPLE
Figure 8.