XRSB-50T_10 Datasheet, PDF (5/13 Pages) Bel Fuse Inc. – 48 Vdc Input 1.5 Vdc - 12 Vdc / 22 A - 5 A Outputs, 1/16 Brick

ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.5 Vdc - 12 Vdc / 22 A - 5 A Outputs, 1/16 Brick
Apr. 12, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Output Trim Equations
Equations for calculating the trim resistor are shown below (Unit: kΩ). The Trim Down resistor should be
connected between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim pin
and the Vout. Only one of the resistors should be used for any given application.
R_trimdown
=
511
delta
− 10.22
Vout
Module Trim
Rtrimdown
GND
R_trimup
=
(100 +
delta) ⋅Vo ⋅5.11− 626
1.225⋅ delta
−10.22
Vout
Rtrimup
Module Trim
GND
Note:
delta = ^{(Vo _ req −Vo )} ×100[%]
Vo
Vo_req=Desired (trimmed) output voltage [V]
Vo=1.503 V for 1.5 V output; Vo=1.804 V for 1.8 V output; Vo=2.505 V for 2.5 V output; Vo=3.308 V for 3.3 V
output; Vo=5.002 V for 5 V output; Vo=12.007 V for 12 V output.
Efficiency Data
90%
85%
80%
75%
70%
65%
60%
55%
50%
2.2A
5.5A
11A
16A
22A
OUTPUT CURRENT (A)
36 V
48 V
75 V
Vo=1.5 V
90%
85%
80%
75%
70%
65%
60%
55%
50%
2A
36V
48V
75V
5A
10A
15A
20A
OUTPUT CURRENT (A)
Vo=1.8 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com