Datasheet

TWR A-Series
20W, Triple Output DC-DC Converters
MDC_TWR20W.E02 Page 4 of 8
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84
83
82
81
80
79
78
77
76
25 50 100 150 200 250
V
IN
= 18V
V
IN
= 48V
V
IN
= 72V
Efficiency vs. ±12V Output Loading
(+5V output loaded @ 2.75A)
Efficiency (%)
±12V Output Currents (±mA)
89
86
83
80
77
74
71
68
65
25 50 100 150 200 250
V
IN
= 18V
V
IN
= 48V
V
IN
= 72V
Efficiency vs. ±12V Output Loading
(+5V output loaded @ 0.55A)
Efficiency (%)
±12V Output Currents (±mA)
Typical Performance Curves (TA = +25°C)
88
86
84
82
80
78
76
74
72
0.25 0.75 1.25 1.75 2.25 2.75
V
IN
= 18V
V
IN
= 48V
V
IN
= 72V
Efficiency vs. +5V Output Loading
(±12V outputs loaded @ ±250mA)
Efficiency (%)
+5V Output Current (A)
The performance curves below were derived from actual test data for a single model number (TWR-5/3000-12/250-D48).
Since all devices in this series have the same circuit architecture, the performance curves are representative for all devices.
84.0
83.5
83.0
82.5
82.0
81.5
81.0
80.5
80.0
18 24 36 48 60 72
Efficiency vs. Input Voltage
(+5V output loaded @ 2.75A, ±12V outputs loaded @ ±250mA)
Efficiency (%)
Input Voltage (V)