PDT006A0X3-SRZ Datasheet, PDF (13/39 Pages) Lineage Power Corporation – 6A Digital Pico DLynxTM: Non-Isolated DC-DC Power Modules 3Vdc ––14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A Output Current

Preliminary Data Sheet
October 17, 2011
6A Digital Pico DLynx^TM: Non-isolated DC-DC Power Modules
3 –– 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current
Design Considerations
Input Filtering
The 6A Digital Pico DLynx^TM module should be
connected to a low ac-impedance source. A highly
inductive source can affect the stability of the module.
An input capacitance must be placed directly adjacent
to the input pin of the module, to minimize input ripple
voltage and ensure module stability.
To minimize input voltage ripple, ceramic capacitors
are recommended at the input of the module. Figure
37 shows the input ripple voltage for various output
voltages at 6A of load current with 1x22 µF or 2x22
µF ceramic capacitors and an input of 12V.
190
180
170
160
150
140
130
120
110
100
90
80
70
0.5
1x22uF
2x22uF
1.5
2.5
3.5
4.5
Output Voltage(Volts)
Figure 37. Input ripple voltage for various output
voltages with 1x22 µF or 2x22 µF ceramic
capacitors at the input (6A load). Input voltage is
12V.
Output Filtering
These modules are designed for low output ripple
voltage and will meet the maximum output ripple
specification with 0.1 µF ceramic and 22 µF ceramic
capacitors at the output of the module. However,
additional output filtering may be required by the system
designer for a number of reasons. First, there may be a
need to further reduce the output ripple and noise of the
module. Second, the dynamic response characteristics
may need to be customized to a particular load step
change.
To reduce the output ripple and improve the dynamic
response to a step load change, additional capacitance
at the output can be used. Low ESR polymer and
ceramic capacitors are recommended to improve the
dynamic response of the module. Figure 38 provides
output ripple information for different external
capacitance values at various Vo and a full load current
of 6A. For stable operation of the module, limit the
capacitance to less than the maximum output
capacitance as specified in the electrical specification
table. Optimal performance of the module can be
achieved by using the Tunable Loop^TM feature described
later in this data sheet.
40
1x22uF Ext Cap
1x47uF Ext Cap
30
2x47uF Ext Cap
20
10
0
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Voltage(Volts)
Figure 38. Output ripple voltage for various output
voltages with external 1x22 µF, 1x47 µF, or 2x47 µF
ceramic capacitors at the output (6A load). Input
voltage is 12V.
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,
i.e., UL 60950-1 2nd, CSA C22.2 No. 60950-1-07, DIN
EN 60950-1:2006 + A11 (VDE0805 Teil 1 + A11):2009-
11; EN 60950-1:2006 + A11:2009-03.
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 fuse
with a maximum rating of TBD in the positive input lead.
LINEAGE POWER
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