Table of Contents
Advertisement
NAD12S10-A
DC-DC Converter Technical Manual V1.1
Typical Waveforms
12 µH
A
V
V
source
220 µF
220 µF+20 µF
Electrolytic
Polymer aluminum
capacitor
capacitor + Ceramic
capacitor
Figure 59: Test set-up diagram
1. Measure the output voltage ripple at B respectively
shown in Figure 59.
2.
During the test of input reflected ripple current, the
input terminal must be connected to a 12 µH inductor
and a 220 µF electrolytic capacitor.
3. Point B, which is for testing the output voltage ripple,
is 25 mm (0.98 in.) away from the V
4. Test board: D x W = 200 mm x 110 mm, 1oz, 4 layers.
I
s
Figure 61: Input reflected ripple current
(for point A in the test set-up diagram, V
V
= 1.2 V, I
= 10 A)
out
out
GLOBAL ENERGY EFFICIENCY SPECIALIST
25 mm (0.98 in.)
10 µF Polymer
tantalum
capacitor
B
V
out
in
DC-DC
converter
GND
0.1 µF
470 µF+66 µF
Ceramic
Polymer aluminum
capacitor
capacitor + Ceramic
capacitor
pin.
out
= 12 V,
in
Load
C
V
source
Figure 60: Application guidance
Do not connect the GND pins outside the converter.
To ensure the stable operating of the converter,
the proper capacitors must be add to the input and
output terminals.
capacitor
C
in
C
out
V
out
Figure 62: Output voltage ripple
(for point B in the test set-up diagram, V
V
= 1.2 V, I
out
V
V
out
in
in
Trim
On/Off
R
GND
GND
Recommend capacitor
220 µF: Polymer aluminum capacitor
20 µF: Ceramic capacitor
470 µF: Polymer aluminum capacitor
66 µF: Ceramic capacitor
= 10 A)
out
16
Load
C
out
trim
= 12 V,
in
Advertisement
Table of Contents
