Datasheet

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ULS 30-Watt Series
Sixteenth-brick DOSA-Compatible,
Isolated DC/DC Converters
MDC_ULS-30W_C07 Page 5 of 30
TYPICAL PERFORMANCE CURVES, ULS-3.3/8-D48
Maximum Current Temperature Derating at Sea Level
(VIN = 36-75V, airfl ow is from pin 1 to pin 3)
Effi ciency vs. Line Voltage and Load Current @ 25°C
0.00 0.81 1.61 2.41 3.21 4.01 4.81 5.61 6.41 7.21 8.01
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
VIN = 75V
V
IN = 60V
V
IN = 48V
V
IN = 36V
Efficiency (%)
Load Current (Amps)
0
1
2
3
4
5
6
7
8
30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (ºC)
0.33 to 2.0 m/s (65 to 400 LFM)
INFRARED THERMAL IMAGE, ULS-3.3/8-D48
Thermal image with hot spot at full load current with 25°C ambient temperature. Natural convention is used with no forced airfl ow. Identifi able and recommended maximum value
to be verifi ed in application. Vin=48V, Q7 max temp=120°C/IPC9592 guidelines.
(+Vin) (+Vout)
(-Vin) (-Vout)