20a digital microdlynx, Non-isolated dc-dc power modules, Data sheet – GE Industrial Solutions 20A Digital MicroDLynx User Manual
Page 34: Shock and vibration

GE
Data Sheet
20A Digital MicroDLynx
TM
: Non-Isolated DC-DC Power Modules
3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 20A Output Current
April 24, 2013
©2012 General Electric Company. All rights reserved.
Page 34
Shock and Vibration
The ruggedized (-D version) of the modules are designed to withstand elevated levels of shock and vibration to be able to operate
in harsh environments. The ruggedized modules have been successfully tested to the following conditions:
Non operating random vibration:
Random vibration tests conducted at 25C, 10 to 2000Hz, for 30 minutes each level, starting from 30Grms (Z axis) and up to 50Grms
(Z axis). The units were then subjected to two more tests of 50Grms at 30 minutes each for a total of 90 minutes.
Operating shock to 40G per Mil Std. 810F, Method 516.4 Procedure I:
The modules were tested in opposing directions along each of three orthogonal axes, with waveform and amplitude of the shock
impulse characteristics as follows:
All shocks were half sine pulses, 11 milliseconds (ms) in duration in all 3 axes.
Units were tested to the Functional Shock Test of MIL-STD-810, Method 516.4, Procedure I - Figure 516.4-4. A shock magnitude of
40G was utilized. The operational units were subjected to three shocks in each direction along three axes for a total of eighteen
shocks.
Operating vibration per Mil Std 810F, Method 514.5 Procedure I:
The ruggedized (-D version) modules are designed and tested to vibration levels as outlined in MIL-STD-810F, Method 514.5, and
Procedure 1, using the Power Spectral Density (PSD) profiles as shown in Table 7 and Table 8 for all axes. Full compliance with
performance specifications was required during the performance test. No damage was allowed to the module and full compliance
to performance specifications was required when the endurance environment was removed. The module was tested per MIL-STD-
810, Method 514.5, Procedure I, for functional (performance) and endurance random vibration using the performance and
endurance levels shown in Table 7 and Table 8 for all axes. The performance test has been split, with one half accomplished before
the endurance test and one half after the endurance test (in each axis). The duration of the performance test was at least 16
minutes total per axis and at least 120 minutes total per axis for the endurance test. The endurance test period was 2 hours
minimum per axis.
Table 7: Performance Vibration Qualification - All Axes
Frequency (Hz)
PSD Level
(G2/Hz)
Frequency (Hz)
PSD Level
(G2/Hz)
Frequency (Hz)
PSD Level
(G2/Hz)
10
1.14E-03
170
2.54E-03
690
1.03E-03
30
5.96E-03
230
3.70E-03
800
7.29E-03
40
9.53E-04
290
7.99E-04
890
1.00E-03
50
2.08E-03
340
1.12E-02
1070
2.67E-03
90
2.08E-03
370
1.12E-02
1240
1.08E-03
110
7.05E-04
430
8.84E-04
1550
2.54E-03
130
5.00E-03
490
1.54E-03
1780
2.88E-03
140
8.20E-04
560
5.62E-04
2000
5.62E-04
Table 8: Endurance Vibration Qualification - All Axes
Frequency (Hz)
PSD Level
(G2/Hz)
Frequency (Hz)
PSD Level
(G2/Hz)
Frequency (Hz)
PSD Level
(G2/Hz)
10
0.00803
170
0.01795
690
0.00727
30
0.04216
230
0.02616
800
0.05155
40
0.00674
290
0.00565
890
0.00709
50
0.01468
340
0.07901
1070
0.01887
90
0.01468
370
0.07901
1240
0.00764
110
0.00498
430
0.00625
1550
0.01795
130
0.03536
490
0.01086
1780
0.02035
140
0.0058
560
0.00398
2000
0.00398