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
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
150 mV
150 uS
150 mV
150 uS
140 mV
150 uS
140 mV
150 uS
130 mV
150 uS
130 mV
150 uS
120 mV
150 uS
120 mV
150 uS
200 mV
200 uS
200 mV
200 uS
170 mV
200 uS
170 mV
200 uS
150 mV
200 uS
150 mV
200 uS
140 mV
200 uS
140 mV
200 uS
25% ~ 50%
Max Load
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
50% ~ 25%
Max Load
25% ~ 50%
Max Load
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.
50% ~ 25%
Max Load
25% ~ 50%
Max Load
50% ~ 25%
Max Load
25% ~ 50%
Max Load
50% ~ 25%
Max Load
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%
88%
87%
86%
85%
83%
81%
91%
91%
90%
89%
88%
86%
84%
-
-
-
-
-
-
-
Vin=48V, Io=Io, max
Switching Frequency
Isolation capacitance
270 kHz
-
300 kHz
1500 pF
330 kHz
-
Output Voltage Trim Range
VO=1.5 V-12 V
VO=1.2 V
The total voltage increased by trim and
remote sense should not exceed
10%Vo.
80% Vo
90% Vo
-
-
110% Vo
110% Vo
Remote Sense
-
-
-
-
10%
Over Temperature Protection
Over Voltage Protection
Pre-bias Voltage
125 C
130% Vo
-
-
Vin=48V, full load, in hiccup mode.
VO=5.0 V
-
-
-
-
-
-
-
-
-
-
-
-
4.0 V
1.4 V
2.0 V
1.4 V
1.2 V
0.9 V
VO=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Calculated Per Bell Core SR-332
(Vin=48 V, Vo=3.3 V, Io=20 A, Ta = 25
C)
MTBF
1,583,176 hours
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.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
BEL [ BEL FUSE INC. ]
