Datasheet

Load Transients
2-6
2.6 Load Transients
The TPS54310 EVM response to load transients is shown in Figure 2–6. The
load transient in Figure 2–6 transitions between 0 A and 3 A. The output
voltage deviates approximately –95 mV (–2.9%) and 75 mV (2.3%) from its
average value as a result of these transients. In Figure 2–6, the output voltage
returns to a ±2% regulation band within 30 µs. Using the alternate feedback
compensation described in Section 1.3.5 Improving Transient Response, the
output voltage deviation can be reduced to –55 mV (–1.7%) and 45 mV (1.4%),
as shown in Figure 2–7. With the alternate compensation, the output voltage
remains within a ±2% regulation band through the duration of the load
transient.
Figure 2–6. Measured Load Transient Response
V
O
(AC)
50 mV/div
V
I
= 5 V
40 µs/div
I
O
2 A/div
Figure 2–7. Improved Load Transient Response
V
O
(AC)
50 mV/div
V
I
= 5 V
20 µs/div
I
O
2 A/div