Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick
Output Specifications (continued)
Parameter
Min
Typ
Max
Notes
Transient Response
Overshoot
-
150 mV
200 mV
25% ~ 50%
Max Load
Settling Time
-
150 uS
200 uS
Overshoot
-
150 mV
200 mV
50% ~ 25%
Max Load
Settling Time
VO=2.5 V
-
150 uS
200 uS
Overshoot
-
140 mV
170 mV
25% ~ 50%
Max Load
Settling Time
-
150 uS
200 uS
Overshoot
-
140 mV
170 mV
50% ~ 25%
Max Load
Settling Time
VO=1.8 V
-
150 uS
200 uS
Overshoot
-
130 mV
150 mV
25% ~ 50%
Max Load
Settling Time
-
150 uS
200 uS
Overshoot
-
130 mV
150 mV
50% ~ 25%
Max Load
Settling Time
VO=1.5 V
-
150 uS
200 uS
Overshoot
-
120 mV
140 mV
25% ~ 50%
Max Load
Settling Time
-
150 uS
200 uS
Overshoot
-
120 mV
140 mV
50% ~ 25%
Max Load
Settling Time
VO=1.2 V
-
150 uS
200 uS
Test conditions: di/dt =
0.1 A/uS, Vin=48 V, with
a 1 uF ceramic capacitor
and a 10 uF Tantalum
capacitor at the output.
Note: All specifications are typical at 25
°C unless otherwise stated.
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
VO=12.0 V
VO=5.0 V
VO=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
88%
87%
86%
85%
83%
81%
91%
90%
89%
88%
86%
84%
-
Vin=48V, Io=Io, max
Switching Frequency
270 kHz
300 kHz
330 kHz
Isolation capacitance
-
1500 pF
-
Output Voltage Trim Range
VO=1.5 V-12 V
VO=1.2 V
80% Vo
90% Vo
-
110% Vo
Remote Sense
-
10%
The total voltage increased by trim and
remote sense should not exceed
10%Vo.
Over Temperature Protection
-
125
°C
-
Over Voltage Protection
-
130% Vo
-
Vin=48V, full load, in hiccup mode.
Pre-bias Voltage
VO=5.0 V
VO=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
-
4.0 V
1.4 V
2.0 V
1.4 V
1.2 V
0.9 V
MTBF
1,583,176 hours
Calculated Per Bell Core SR-332
(Vin=48 V, Vo=3.3 V, Io=20 A, Ta = 25
°C)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
2.30 x 0.896 x 0.395
58.42 x 22.76 x 10.03
Weight
-
27 g
-
Note: All specifications are typical at 25 °C unless otherwise stated.