Datasheet

DS_DCL12S0A0S20NFA_06182014 E-mail: [e-mail]
http://www.deltaww.com/dcdc
P9
TEST CONFIGURATIONS
Figure 27: Input reflected-ripple current test setup
Note: Use a 10μF and 1μF capacitor. Scope measurement
should be made using a BNC connector.
Figure 28: Peak-peak output noise and startup transient
measurement test setup.
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GND
Figure 29: 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.
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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. A highly inductive source can affect the stability
of the module. An input capacitance must be placed
close to the modules input pins to filter ripple current and
ensure module stability in the presence of inductive
traces that supply the input voltage to the module.
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. A highly inductive source can affect the stability
of the module. An input capacitance must be placed
close to the modules input pins to filter ripple current and
ensure module stability in the presence of inductive
traces that supply the input voltage to the module.
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. A
highly inductive source can affect the stability of the module.
An input capacitance must be placed close to the modules
input pins to filter ripple current and ensure module stability in
the presence of inductive traces that supply the input voltage to
the module.
Safety Considerations
For safety-agency approval the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standards.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the input
must meet SELV requirements. The power module has
extra-low voltage (ELV) outputs when all inputs are ELV.
The input to these units is to be provided with a fast acting fuse
with a maximum rating of 30A in the positive input lead.