NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Remote On/Off
For Active High Modules (Positive Logic)
When the transistor Q1 is in the Off state, the power module is ON.
When the transistor Q1 is turned On, the power module is OFF.
Vin
Vin
Module
Remote On/Off
Q1
GND
GND
For Active Low Modules (Negative Logic)
When the transistor Q1 is in the Off state, the power module is OFF.
When the transistor Q1 is turned On, the power module is ON.
Vin
R
Vin
Module
Remote On/Off
Q1
GND
GND
Output Trim Equations
Equation for calculating the trim resistor given the desired output voltage (Vo) is shown below. The Trim Up
resistor should be connected between the Trim pin and Ground.
R trim =
10500
Vo ? 0 . 7525
? 1000 ( Ω )
Vout
Vo (V)
Rtrim (K ? )
Sense
0.7525
1.2
1.5
1.8
2.5
Open
22.46
13.05
9.024
5.009
Module
trim
GND
Rtrim
3.3
5.0
3.122
1.472
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 ? Tel 201-432-0463 ? Fax 201-432-9542 ? www.belfuse.com
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