DC/DC Converter

Programmable, Single Output, 1.1V - 1.85Vout @ 60A

DC/DC Converter

3.3V input, 0.8 to 2.5V output, 10A; 5V input, 1.0 to 3.3V output, 10A

1150 Eglinton Avenue East

4607 S.E. International Way

Toronto, Ontario M3C 1H7

Milwaukie, Oregon 97222

1-866-740-1232

www.cdtechno-cps.com

1-971-206-2800

S111_084-S111-00_RevG_Jan18-2005.fm

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Resistor Trim Equations

N O T E :

For best results, the trim m ing range should not exceed +/-20% of the initial

output voltage set by the factory (V set). T o trim dow n to 0.6V , units w ith an

initial output voltag e of up to 1.2V can be used.

•

Trimming U P — raising the output voltag e using a resistor from T rim to G round.

3.3V in

5V in

()

Vset

Vout

Rtrim

−

=

1992

()

()

Vout

Vset

Vout

Vset

Rtrim

−

−

+

×

−

=

1

500

approaches 0

Ω.

•

Trimming D O W N — low ering the output voltag e using a resistor from T rim to an

external voltage reference or to the V out pins.

3.3V in

5V in

()

Vset

Vout

Vref

Rtrim

−

×

−

×

=

)

5

4

(

498

()

()

Vout

Vset

Vref

Vout

Vset

Rtrim

+

−

+

+

−

−

×

−

=

1

500

approaches 0

Ω.

Where:

V out is the desired output voltag e.

Vset is the output voltag e setpoint (output voltag e w ithout trim ).

Vref is the reference voltag e for the trim resistor w hen trim m ing dow n. If using Vout

for this purpose, then Vref = Vout.

Rtrim is the resistance value of the trim resistor (ohm s).