XRLP-10T03X Datasheet, PDF (10/16 Pages) Bel Fuse Inc. – ISOLATED DC/DC CONVERTERS

ISOLATED DC/DC CONVERTERS
36 Vdc - 80 Vdc Input,
3.3 Vdc/3 A Output
Aug. 13, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Output Trim Equations
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected
between the Trim pin and Vout pin. The Trim Up resistor should be connected between the Trim pin and the
GND pin. Only one of the resistors should be used for any given application.
Minimum trim down voltage is 3.0V
Maximum trim up voltage is 3.6V.
The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage.
Rtrimdown = 20.525 ⋅ ^{(Vo _ req − 1.24)} − 1[kΩ]
3.3 − Vo _ req
Module
Vout
Trim
Rtrim-down
GND
Rtrimup
=
25 . 451
− 1[k Ω ]
Vo _ req − 3 . 3
Module
Vout
Trim
GND
Rtrim-up
Note: Vo_req=Desired (trimmed) output voltage[V]
Output voltage Vo=3.3 V
1000
900
800
700
600
500
400
300
200
100
0
3
3.03 3.06 3.09 3.12 3.15 3.18 3.21 3.24 3.27 3.3
Adjusted output voltage Vo,adj(V)
1000
900
800
700
600
500
400
300
200
100
0
3.3 3.33 3.36 3.39 3.42 3.45 3.48 3.51 3.54 3.57 3.6
Adjusted output voltage Vo,adj(V)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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