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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Output Specifications (continued)
Parameter
Min
Typ
Max
Notes
Current Limit Threshold
VO=12 V
VO=5.0 V
VO=3.3 V
VO=1.2 V-2.5 V
14 A
35 A
50 A
55 A
15.5 A
40 A
60 A
18 A
45 A
65 A
Short Circuit Surge Transient
-
3 A
2s
5 A
2s
Ripple and Noise (rms)
VO=12 V
VO=5.0 V
VO=3.3 V
VO=1.2 V-2.5 V
-
25 mV
20 mV
15 mV
30 mV
25 mV
20 mV
Ripple and Noise (pk-pk)
VO=12 V
VO=5.0 V
VO=3.3 V
VO=1.8 V
Vo=2.5 V
VO=1.5 V
VO=1.2 V
-
70 mV
60 mV
50 mV
45 mV
40 mV
55 mV
40 mV
90 mV
80 mV
70 mV
60 mV
70 mV
60 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
10 mS
-
100 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
-
200 uS
300 uS
Overshoot
-
600 mV
800 mV
75% ~ 50%
Max Load
Settling Time
VO=12.0 V
-
200 uS
300 uS
Overshoot
-
250 mV
375 mV
50% ~ 75%
Max Load
Settling Time
-
100 uS
200 uS
Overshoot
-
250 mV
375 mV
75% ~ 50%
Max Load
Settling Time
VO=5.0 V
-
100 uS
200 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=3.3 V
-
200 uS
300 uS
Overshoot
-
100 mV
200 mV
50% ~ 75%
Max Load
Settling Time
-
300 uS
400 uS
Overshoot
-
100 mV
200 mV
75% ~ 50%
Max Load
Settling Time
VO=2.5 V
-
300 uS
400 uS
Overshoot
-
100 mV
140 mV
50% ~ 75%
Max Load
Settling Time
-
200 uS
300 uS
Overshoot
-
100 mV
140 mV
75% ~ 50%
Max Load
Settling Time
Vo=1.8 V
VO=1.5 V
-
200 uS
300 uS
Overshoot
-
100 mV
120 mV
50% ~ 75%
Max Load
Settling Time
-
200 uS
300 uS
Overshoot
-
100 mV
120 mV
75% ~ 50%
Max Load
Settling Time
VO=1.2 V
-
200 uS
300 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 nominal input, full load at 25
°C unless noted.