Datasheet

Closed Loop Response
-60
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
10 100 1000 10000 100000 1000000
Frequency - Hz
Gain - dB
-180
-150
-120
-90
-60
-30
0
30
60
90
120
150
180
Phase - Degrees
Gain
Phase
Vout=20mV/div(accoupled)
PH=5V/div
Time=2usec/div
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2.6 Loop Characteristics
The TPS54260EVM-597 loop-response characteristics are shown in Figure 6 . Gain and phase plots are
shown for V
IN
voltage of 12V. Load current for the measurement is 2.5 A.
Figure 6. TPS54260EVM-597 Loop Response
2.7 Output Voltage Ripple
The TPS54260EVM-597 output voltage ripple is shown in Figure 7 . The output current is the rated full
load of 2.5 A and V
IN
= 12V. The ripple voltage is measured directly across the output capacitors.
Figure 7. TPS54260EVM-597 Output Ripple
7
SLVU372–March 2009 TPS54260EVM-597 2.5-A, SWIFT™ Regulator Evaluation Module
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