Datasheet

Time = 2 ms/div
200 mA/div
10 V/div
20 mV/div
No Load
C1: SW
C4: I
L
C2: V ac coupled
OUT
C2
C4
C1
Time = 2 s/divm
1 A/div
10 V/div
20 mV/div
C2: V ac coupled
OUT
C1: SW
C4: I
L
I = 3.5 A
OUT
C2
C4
C1
Time = 2 s/divm
500 mA/div
10 V/div
10 mV/div
C2: V ac coupled
OUT
C1: SW
C4: I
L
I = 100 mA
OUT
C2
C4
C1
Test Setup and Results www.ti.com
2.6 Output Voltage Ripple
The EVM CCM output voltage ripple is shown in Figure 11. The output current is the rated full load of 3.5
A and V
IN
= 12 V. The voltage ripple is measured directly across the output capacitors.
The DCM output voltage ripple is shown in Figure 12. The output current is 0.1 A and V
IN
= 12 V.
The Pulse Skip Eco-mode™ output voltage ripple is shown in Figure 13. There is no external load on the
output and V
IN
= 12 V.
Figure 11. Output Voltage Ripple CCM Figure 12. Output Voltage Ripple DCM
Figure 13. Output Voltage Ripple Eco-mode
8
Using the TPS54340 Step-Down Converter Evaluation Module SLVU794A–October 2012–Revised February 2013
Submit Documentation Feedback
Copyright © 2012–2013, Texas Instruments Incorporated