V48SC12007NMFB datasheet(8/14 Pages) DELTA

Part #	V48SC12007NMFB

Description	Delphi Series V48SC, 1/16th Brick 90W DC/DC Power Modules

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Manufacturer	DELTA [Delta Electronics, Inc.]

Direct Link	http://www.deltaww.com

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8 / 14 page

DS_V48SC12007_08212013

8

FEATURES DESCRIPTIONS (CON.)

Vi(-)

Vi(+)

Vo(-)

Vo(+)

Sense(+)

Sense(-)

Resistance

Contact

Contact and Distribution

Losses

Figure 18: Effective circuit configuration for remote sense

operation

If the remote sense feature is not used to regulate the

output at the point of load, please connect SENSE(+) to

Vo(+) and SENSE(

–) to Vo(–) at the module.

The output voltage can be increased by both the

remote sense and the trim; however, the maximum

increase is the larger of either the remote sense or the

trim, not the sum of both.

When using remote sense and trim, the output voltage

of the module is usually increased, which increases the

power output of the module with the same output

current.

Max rated current is guaranteed at full output voltage

remote sense range.

Output Voltage Adjustment (TRIM)

To increase or decrease the output voltage set point,

connect an external resistor between the TRIM pin and

either the SENSE(+) or SENSE(-). The TRIM pin

should be left open if this feature is not used.

Figure 19: Circuit configuration for trim-down (decrease

output voltage)

If the external resistor is connected between the TRIM

and SENSE (-) pins, the output voltage set point

decreases (Fig. 19). The external resistor value

required to obtain a percentage of output voltage

change △% is defined as:























K

down

Rtrim

22

.

10

511

Ex. When Trim-down -10% (12V×0.9=10.8V)





























K

down

Rtrim

88

.

40

22

.

10

511

Figure 20: Circuit configuration for trim-up (increase output

voltage)

If the external resistor is connected between the TRIM

and SENSE (+) the output voltage set point increases

(Fig. 20). The external resistor value required to obtain

a percentage output voltage change △% is defined

as:





















K

up

Rtrim

22

.

10

511

1.225

)

(100

Vo

11

.

5

Ex. When Trim-up +10% (12V×1.1=13.2V)

 

















K

up

Rtrim

31

.

489

22

.

10

511

10

225

.

1

)

10

100

(

12

11

.

5

Trim resistor can also be connected to Vo+ or Vo- but it

would introduce a small error voltage than the desired

value.

The output voltage can be increased by both the remote

sense and the trim, however the maximum increase is

the larger of either the remote sense or the trim, not the

sum of both.

When using remote sense and trim, the output voltage

of the module is usually increased, which increases the

power output of the module with the same output

current.

Max rated current is guaranteed at full output voltage

trim range.

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