Datasheet

C3: I
Lb
(1.00 A/div)
C2: SW (20.0 V/div)
C1: V
OUT
AC Coupled (20 mV/div)
Timebase (2.00 µs/div)
C4: I
La
(1.00 A/div)
C3: I
Lb
(1.00 A/div)
C2: SW (20.0 V/div)
C1: V
OUT
AC Coupled (50 mV/div)
Timebase = 2.00 µs/div
C4: I
La
(1.00 A/div)
Test Setup and Results www.ti.com
Figure 8 shows the TPS55340EVM-147 output voltage ripple and inductor current ripple. The output
current is the rated full load of 1A and V
IN
= 18V. The ripple voltage is measured directly across the output
capacitors.
Figure 8. TPS55340EVM-147 V
IN
= 18V Output Ripple
Figure 9 shows the TPS55340EVM-147 output voltage ripple, inductor current ripple and switching
waveform while operating in discontinuous conduction mode (DCM). The input voltage is 12V and the
output is loaded with 60Ω.
Figure 9. TPS55340EVM-147 DCM Output Ripple
8
TPS55340EVM-147, 6V to 18V Input, 12V Output SEPIC Evaluation Module SLVU742A–June 2012–Revised August 2013
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