GE Industrial Solutions PicoTLynx 6A - Manual (Page 12)

GE
Data Sheet
PicoTLynx TM 6A: Non-Isolated DC-DC Power Modules
2.4Vdc –5.5Vdc input; 0.6Vdc to 3.63Vdc output; 6A Output Current
September 11, 2013 ©2013 General Electric Company. All rights reserved. Page 12
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 36 provides output ripple information for different
external capacitance values at various Vo and for load currents
of 6A while maintaining an input voltage of 5V. Fig 37 shows the
performance with a 3.3V input. 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.
0
5
10
15
20
25
0.5 1 1.5 2 2.5 3 3.5
Output Voltage(Volts)
R
ippl
e(
m
V
p-
p)
1x10uF External Cap
1x47uF External Cap
2x47uF External Cap
4x47uF External Cap
Figure 36. Output ripple voltage for various output voltages
with external 1x10 µF, 1x47 µF, 2x47 µF or 4x47 µF ceramic
capacitors at the output (6A load). Input voltage is 5V.
0
5
10
15
20
0.5 1 1.5 2 2.5 3
Output Voltage(Volts)
R
ippl
e
(m
V
p-
p)
1x10uF External Cap
1x47uF External Cap
2x47uF External Cap
4x47uF External Cap
Figure 37. Output ripple voltage for various output voltages
with external 1x10 µF, 1x47 µF, 2x47 µF or 4x47 µF ceramic
capacitors at the output (6A load). Input voltage is 3.3V.
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, CSA C22.2 No. 60950-1-03, and VDE 0850:2001-12
(EN60950-1) Licensed.
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 6A in the positive input lead
.