ds2d01r Delta Electronics, Inc., ds2d01r Datasheet - Page 4

• Manufacturer Part Number: ds2d01r
• Description: Delphi Ds2d00r Series Dc/dc Power Modules 5, 12, 24, 48vin, 2~3w Dip
• Manufacturer: Delta Electronics, Inc.

Test Configurations
Input Reflected-Ripple Current Test
Setup
Input reflected-ripple current is measured with a
inductor Lin (4.7uH) and Cin (220uF, ESR < 1.0Ω at
100 KHz) to simulate source impedance. Capacitor
Cin is to offset possible battery impedance. Current
ripple is measured at the input terminals of the
module and measurement bandwidth is 0-500 KHz.
Peak-to-Peak Output Noise Measurement
Scope measurement should be made by using a
BNC socket, measurement bandwidth is 0-20 MHz.
Position the load between 50 mm and 75 mm from
the DC/DC Converter. A Cout of 0.33uF ceramic
capacitor is placed between the terminals shown
below.
+Vin
+Vin
-Vin
Dual Output
-Vin
Single Output
Converter
To Oscilloscope
DC / DC
+
Converter
DC / DC
Battery
+
+Out
+Out
Com.
-Out
-Out
Cin
Lin
Copper Strip
Copper Strip
Current
Probe
Cout
Cout
Cout
+Vin
-Vin
Converter
DC / DC
Scope
+Out
-Out
Scope
Scope
Resistive
Resistive
Load
Load
Load
Design & Feature Considerations
The DS2D00R circuit block diagrams are shown in
Figures 5 and 6.
Figure 5: Block diagram of DS2D00R single output
modules.
Figure 6: Block diagram of DS2D00R dual output
modules.
Input Source Impedance
The power module should be connected to a low ac-
impedance input source. Highly inductive source
impedances can affect the stability of the power
module.
In applications where power is supplied over long lines
and output loading is high, it may be necessary to use
a capacitor at the input to ensure startup.
Capacitor mounted close to the input of the power
module helps ensure stability of the unit, it is
recommended to use a good quality low Equivalent
Series Resistance (ESR < 1.0Ω at 100 KHz) capacitor
of a 2.2uF for the 5V input devices, a 1.0uF for the
12V input devices, and a 0.47uF for the 24V devices.
DC Power
Source
+
-
+
Cin
+Vin
-Vin
Converter
DC / DC
+Out
-Out
Load
4