BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
MDC_BEI15W.A18 Page 8 of 15
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PERFORMANCE DATA, BEI15-120-Q48
Effi ciency vs. Line Voltage and Load Current @ +25°C (Vout = 12V)
Maximum Current Temperature Derating at Sea Level
(VIN=24V, airfl ow is from pin 1 to pin 2)
Maximum Current Temperature Derating at Sea Level
(VIN= 18V, airfl ow is from pin 1 to pin 2)
65
68
71
74
77
80
83
86
0.06 0.12 0.17 0.23 0.29 0.34 0.40 0.45 0.51 0.57 0.62
Load Current (Amps)
Efficiency (%)
VIN = 18V
V
IN = 24V
V
IN = 48V
V
IN = 75V
0.50
0.55
0.60
0.65
20 25 30 35 40 45 50 55 60 65 70 75 80 85
Natural Convection
Output Current (Amps)
Ambient Temperature (ºC)
Maximum Current Temperature Derating at Sea Level
(VIN= 75V, airfl ow is from pin 1 to pin 2)
0.50
0.55
0.60
0.65
20 25 30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (ºC)
0.5 m/s (100 LFM)
0.50
0.55
0.60
0.65
20 25 30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (ºC)
0.5 m/s (100 LFM)
Maximum Current Temperature Derating at Sea Level
(VIN= 48V, airfl ow is from pin 1 to pin 2)
0.50
0.55
0.60
0.65
20 25 30 35 40 45 50 55 60 65 70 75 80 85
Natural Convection
Output Current (Amps)
Ambient Temperature (ºC)
Power Dissipation vs. Load Current @ +25°C
0.5
1.0
1.5
2.0
2.5
3.0
0.1 0.1 0.2 0.2 0.3 0.3 0.4 0.5 0.5 0.6 0.6
Output Load Current (Amps)
Power Dissipation (Watts)
VIN = 18V
V
IN = 24V
V
IN = 48V
V
IN = 75V
