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=2V/div
Time=500nsec/div
www.ti.com Test Setup and Results
2.6 Loop Characteristics
The TPS54319EVM-626 loop-response characteristics are shown in Figure 6 . Gain and phase plots are
shown for V
IN
voltage of 5 V. Load current for the measurement is 3 A.
Figure 6. TPS54319EVM-626 Loop Response
2.7 Output Voltage Ripple
The TPS54319EVM-626 output voltage ripple is shown in Figure 7 . The output current is the rated full
load of 3 A and V
IN
= 5 V. The ripple voltage is measured directly across the output capacitors.
Figure 7. TPS54319EVM-626 Output Ripple
7
SLVU377–May 2010 TPS54319EVM-626 3-A, SWIFT™ Regulator Evaluation Module
Copyright © 2010, Texas Instruments Incorporated