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DNL10S0A0R16PFD Datasheet(PDF) 6 Page - Delta Electronics, Inc.

Part No. DNL10S0A0R16PFD
Description  Delphi DNL, Non-Isolated Point of Load DC/DC Power Modules: 8.3-14Vin, 0.75-5.0V/16A out
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Maker  DELTA [Delta Electronics, Inc.]
Homepage  http://www.deltaww.com
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DNL10S0A0R16PFD Datasheet(HTML) 6 Page - Delta Electronics, Inc.

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DS_DNL10SIP16_01262007
6
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 17: 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 18: Peak-peak output noise and startup transient
measurement test setup
SUPPLY
I
VI
Vo
GND
Io
LOAD
CONTACT AND
DISTRIBUTION LOSSES
CONTACT RESISTANCE
Figure 19: 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 20 shows the input ripple voltage
(mVp-p) for various output models using 6x47uF low
ESR tantalum capacitors (SANYO P/N:16TQC47M,
47uF/16V or equivalent) and 6x22 uF very low ESR
ceramic capacitors (TDK P/N:C3225X7S1C226MT,
22uF/16V or equivalent).
The input capacitance should be able to handle an AC
ripple current of at least:
Figure 20: Input ripple voltage for various output models,
Io = 16A (Cin = 6x47uF tantalum capacitors and
6x22uF ceramic capacitors at the input)
0
50
100
150
200
250
300
350
01
2
3
4
5
6
OutputVoltage(Vdc)
Tantalum
Ceramic
Arms
Vin
Vout
Vin
Vout
Iout
Irms
⎛ −
=
1


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