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DNL10S0A0R16NFD Datasheet(PDF) 8 Page - Delta Electronics, Inc.

Part # DNL10S0A0R16NFD
Description  Delphi DNS, Non-Isolated Point of Load DC/DC Power Modules: 2.8-5.5Vin, 0.75-3.3V/6Aout
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Manufacturer  DELTA [Delta Electronics, Inc.]
Direct Link  http://www.deltaww.com
Logo DELTA - Delta Electronics, Inc.

DNL10S0A0R16NFD Datasheet(HTML) 8 Page - Delta Electronics, Inc.

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DS_DNS04SMD6A_10202006
8
TEST CONFIGURATIONS
VI(+)
VI(-)
BATTERY
2 100uF
Tantalum
L
TO OSCILLOSCOPE
Note: Input reflected-ripple current is measured with a
simulated source inductance. Current is measured at
the input of the module.
Figure 29: Input reflected-ripple test setup
Vo
GND
COPPER STRIP
10uF
tantalum
1uF
ceramic
SCOPE
Resistive
Load
Note: Use a 10µF tantalum and 1µF capacitor. Scope
measurement should be made using a BNC connector.
Figure 30: Peak-peak output noise and startup transient
measurement test setup.
SUPPLY
II
VI
Vo
GND
Io
LOAD
CONTACT AND
DISTRIBUTION LOSSES
CONTACT RESISTANCE
Figure 31: Output voltage and efficiency measurement test
setup
Note: All measurements are taken at the module terminals.
When the module is not soldered (via socket), place
Kelvin connections at module terminals to avoid
measurement errors due to contact resistance.
%
100
)
(
×
×
×
=
Ii
Vi
Io
Vo
η
DESIGN CONSIDERATIONS
Input Source Impedance
To maintain low noise and ripple at the input voltage, it is
critical to use low ESR capacitors at the input to the
module. Figure 32 shows the input ripple voltage (mVp-p)
for various output models using 2x100 µF low ESR
tantalum
capacitor (KEMET p/n: T491D107M016AS,
AVX p/n: TAJD107M106R, or equivalent) in parallel with
47 µF ceramic capacitor (TDK p/n:C5750X7R1C476M or
equivalent). Figure 33 shows much lower input voltage
ripple when input capacitance is increased to 400 µF (4 x
100 µF) tantalum capacitors in parallel with 94 µF (2 x 47
µF) ceramic capacitor.
The input capacitance should be able to handle an AC
ripple current of at least:
Arms
Vin
Vout
Vin
Vout
Iout
Irms
⎛ −
=
1
0
50
100
150
200
01234
Output Voltage (Vdc)
3.3Vin
5.0Vin
Figure 32: Input voltage ripple for various output models, Io =
6A (CIN = 2
×100µF tantalum // 47µF ceramic)
0
20
40
60
80
012
34
Output Voltage (Vdc)
3.3Vin
5.0Vin
Figure 33: Input voltage ripple for various output models, Io =
6A (CIN = 4
×100µF tantalum // 2×47µF ceramic)


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