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 1.2-2.5 Vdc/80 A, 3.3 Vdc/70 A, 5 Vdc/48 A, 12 Vdc/20 A Output
Output Specifications (continued)
Parameter
Min
Typ
Max
Notes
Output Current
VO=12.0 V
VO=5.0 V
Vo=3.3 V
Vo=1.2 V - 2.5 V
0 A
-
20 A
48 A
70 A
80 A
Current Limit Threshold
VO=12.0 V
VO=5.0 V
Vo=3.3 V
Vo=1.2 V - 2.5 V
21 A
50 A
74 A
86 A
25 A
58 A
84 A
96 A
30 A
66 A
94 A
106 A
Hiccup Mode
Short Circuit Surge Transient
-
3 A
2s
5 A
2s
Ripple and Noise (rms)
VO=12.0 V
VO=5.0 V
Vo=3.3 V
Vo=1.2 V - 2.5 V
-
30 mV
25 mV
20 mV
15 mV
50 mV
40 mV
30 mV
Ripple and Noise (pk-pk)
VO=12.0 V
VO=5.0 V
Vo=3.3 V
Vo=1.2 V - 2.5 V
-
100 mV
80 mV
55 mV
40 mV
150 mV
100 mV
80 mV
Test conditions:
0-20 MHz BW, with a
1 uF ceramic capacitor
and a 10 uF Tantalum
capacitor at the output.
Turn on Time
VO=5.0 V - 12.0 V
Vo=3.3 V
Vo=1.2 V - 2.5 V
10 mS
8 mS
5 mS
-
30 mS
20 mS
15 mS
Overshoot at Turn on
-
0%
5%
Output Capacitance
VO=12.0 V
VO=5.0 V
Vo=1.2 V - 3.3 V
0 uF
-
2200 uF
10000 uF
20000 uF
Transient Response
Overshoot
-
600 mV
800 mV
50% ~ 75%
Max Load
Settling Time
-
300 uS
500 uS
Overshoot
-
600 mV
800 mV
75% ~ 50%
Max Load
Settling Time
VO=12.0 V
-
300 uS
500 uS
Overshoot
-
250 mV
400 mV
50% ~ 75%
Max Load
Settling Time
-
250 uS
400 uS
Overshoot
-
250 mV
400 mV
75% ~ 50%
Max Load
Settling Time
VO=5.0 V
-
250 uS
400 uS
Overshoot
-
150 mV
200 mV
50% ~ 75%
Max Load
Settling Time
-
200 uS
300 uS
Overshoot
-
150 mV
200 mV
75% ~ 50%
Max Load
Settling Time
VO=3.3 V
-
200 uS
300 uS
Overshoot
-
100 mV
200 mV
50% ~ 75%
Max Load
Settling Time
-
200 uS
300 uS
Overshoot
-
100 mV
200 mV
75% ~ 50%
Max Load
Settling Time
VO=1.2 V - 2.5 V
-
200 uS
300 uS
Test conditions: di/dt =
0.1 A/uS, Vin=48 V,
Ta=25
°C with a 1 uF
ceramic capacitor and
a 10 uF Tantalum
capacitor at the output.
Note:
All specifications are typical at nominal input, full load at 25
°C unless noted.