QMS DC-DC Series Data Sheet
Wide-Range Input, 70 to 82W Quarter-Brick Converters
Performance Characteristic
Reflected Ripple Current
Efficiency
100
90
80
70
60
QMS25DE
50
18
36
60
40
2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0
Load (A)
Figure 3. Efficiency,
f
(Line & load)
Figure 1. QMS25DE, Input Reflected Ripple Current
(typ.)
Conditions: Output current = 25 ADC (82.5 W).
Input voltage = 36 VDC.
Waveform: Input RRC < 10 mA P-P (measured)
Scale : 5mA/10mV or 5mA/division.
100
90
80
70
60
QMS14DG
Undervoltage Lockout Characteristics (typ)
50
40
18
36
60
1.4 2.8 4.2 5.6 7.0 8.4 9.8 11.2 12.6 14.0
Load (A)
Figure 4. Efficiency,
f
(Line & load)
100
90
80
70
60
QMS07DH
50
18
36
60
40
0.7 1.4 2.1 2.8 3.5 4.2 4.9 5.6 6.3 7.0
Load (A)
Figure 2. UVLO Input Characteristics
MCD10143 Rev.1.1, 30--Aug-10
Page 8 of 20
Figure 5. Efficiency,
f
(Line & load)
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