XRP2-50E3A0 Datasheet, PDF (9/15 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5 Vdc/50 A Output
Nov. 02, 2010
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Control Specifications
Parameter
Min
Remote On/Off (Active High)
Signal Low (Unit Off)
-0.3
Signal High (Unit On)
2
Current Source/Sink
0
Typ
Max
Unit
Notes
-
0.8
V
-
Vin,max
V
Remote On/Off pin is open, unit is off.
-
3.3
mA
Recommended remote on/off circuit for active high
Vin +
Vcc
O n/o ff
Vin+
Vc c
On/ off
V in-
Vin-
Control with open collector/drain circuit
Control with photocoupler circuit
Vin+
V cc
On/off
Vin+
On/off
Vin-
Vin-
Control with logic circuit
Permanently on
Output Trim Equations
Equations for calculating the trim resistor are shown below. The Trim Up resistor should be connected between
the Trim+ pin and Trim- pin.
Maximum duty cycle is 65%.
Minimum trim down voltage is 0.6V
Maximum trim up voltage is 5V.
The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage.
The resistor trim equation:
R _trim
=
1.2 _{(K Ω)}
Vo − 0.6
Vout
Module _Trim+
Trim–
Rtrim
The voltage trim equation:
Trim+
( ⁽ ) ^{) Rtrim2}
=
R_trim1 1.2− 2V_{trim (KΩ)}
R_trim1 Vo −0.6 −1.2
-^{+ Vtrim}
Rtrim2
R trim1
Trim-
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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