Time (4 s/div)
m
V
:
50 mV/div
OUT
SW:
2 V/div
I
:
200 mA/div
COIL
V
= 3.6 V
V
= 1.8 V
IN
OUT
L = 1.2 H
C
= 10 F
m
m
OUT
I
= 20 mA
MODE = GND
OUT
TYPICAL OUTPUT VOLTAGE RIPPLE (PFM MODE)
Time (100 ns/div)
I
:
500 mA/div
COIL
V
:
50 mV/div
OUT
SW:
2 V/div
TYPICAL OUTPUT VOLTAGE RIPPLE (PWM MODE)
V
= 3.6 V
V
= 1.8 V
IN
OUT
L = 1.2 H
C
= 10 F
m
m
OUT
I
= 500 mA
MODE = GND
OUT
TPS62065/67EVM Test Data
www.ti.com
6.4
Output Voltage Ripple (Power-Save Mode)
Figure 8
and
Figure 9
show the typical output voltage ripple for the TPS62065 in PFM and PWM modes,
respectively, with the TPS62065EVM.
Figure 8. TPS62065 Output Voltage Ripple (PFM Mode)
Figure 9. TPS62065 Output Voltage Ripple (PWM Mode)
10
TPS62065/67EVM
SLVU364 – March 2010
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