d12s1r227-2d Delta Electronics, Inc., d12s1r227-2d Datasheet - Page 6

• Manufacturer Part Number: d12s1r227-2d
• Description: D12s1r227-2d, Non-isolated, Power Block Dc/dc Power Modules 7.0~13.2vin, 0.8v~1.8v/25aout
• Manufacturer: Delta Electronics, Inc.

Figure 12: Peak-peak Input ripple & noise measurement test
TEST CONFIGURATIONS
Note: 3pcs 560μF OSCON and 320μF MLCC capacitor
in the module output. Scope measurement should be
made by using a BNC connector.
Figure 11: Output voltage and efficiency measurement test
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.
setup
Note: 4pcs 1,500μF Aluminum in the module input.
Scope measurement should be made by using a BNC
connector.
Figure 10: Peak-peak output ripple & noise and startup
transient measurement test setup
SUPPLY
Input
GND
Vo
CONTACT RESISTANCE
SCOPE
I
I
setup
η
COPPER STRIP
=
560uF*3
(
Oscon
16V/1500uF * 4pcs
Aluminum
Vo
Vi
Cin
V
I
GND
×
×
Vo
Io
Ii
Cout
MLCC
320uF
)
×
100
DISTRIBUTION LOSSES
SCOPE
%
Io
Resistive
Load
LOAD
Vo
DESIGN CONSIDERATIONS
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances 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
maximum 15A time-delay fuse in the ungrounded lead.
FEATURES DESCRIPTIONS
Over-Current Protection
To provide protection in an output over load fault
condition, the unit is equipped with internal over-current
protection.
triggered, the unit will be shutdown and restart by input
or OUTEN on/off. The units operate normally once the
fault condition is removed.
Over-Temperature Protection
To provide additional over-temperature protection in a
fault condition, the unit is equipped with a latching thermal
shutdown circuit. The shutdown circuit engages when the
temperature
approximately 135℃. The shutdown unit will restart by
input or OUTEN on/off while the temperature lower than
125C.
When
of
monitored
the
over-current
component
protection
exceeds
is
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