S36SE12002NKFA datasheet(9/14 Pages) DELTA

Part #	S36SE12002NKFA

Description	Delphi S36SE, 25W 1x1 Brick Series DC/DC Power Modules: 36~75V in, 12V/2A out

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Manufacturer	DELTA [Delta Electronics, Inc.]

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9 / 14 page

DS_S36SE12002PRFZ_10252013

9

FEATURES DESCRIPTIONS (CON.)

Output Voltage Adjustment

To increase or decrease the output voltage set point,

the modules may be connected with an external

resistor between the TRIM pin and either the Vo(+) or

Vo(-). The TRIM pin should be left open if this feature

is not used.

R

Load

Vo (+)

Trim

Vo (-)

R

trim-down

Vi (+)

Vi (-)

ON/OFF

R

Load

Vo (+)

Trim

Vo (-)

R

trim-down

Vi (+)

Vi (-)

ON/OFF

Vo (+)

Trim

Vo (-)

R

trim-down

Vi (+)

Vi (-)

ON/OFF

Figure 17: Circuit configuration for trim-down (decrease

output voltage)

If the external resistor is connected between the TRIM

and Vo(+) pins, the output voltage set point decreases

(Fig. 17). The external resistor value required to obtain

an output voltage change from 12V to the desired

Vo_adj is defined as:

R trim_down

Vo_adj

2.5



(

) 10000



12

Vo_adj



5110



Ex. When Trim-down -10%

Vo_adj=12V×(1-10%)=10.8V

R trim_down

10.8

2.5



(

) 10000



12

10.8



5110



Rtri m_down

6.406

10

4





ohm

Vo (+)

Trim

Vo (-)

R

Load

R

trim-up

Vi (+)

Vi (-)

ON/OFF

Vo (+)

Trim

Vo (-)

R

Load

R

trim-up

Vi (+)

Vi (-)

ON/OFF

Figure 18: Circuit configuration for trim-up (increase output

voltage)

If the external resistor is connected between the TRIM

and Vo(-) the output voltage set point increases (Fig.

18). The external resistor value required to obtain an

output voltage change from 12V to the desired Vo_adj

is defined as:

R trim_up

2.5 10000



Vo_adj

12



5110



Ex. When Trim-up +10%

Vo_adj=12V×(1+10%)=13.2V

R trim_up

2.5 10000



13.2

12



5110



Rtri m_up

1.572

10

4





ohm

When using trim function, the output voltage of the

module is usually increased, which increases the power

output of the module with the same output current.

Care should be taken to ensure that the maximum

output power of the module remains at or below the

maximum rated power.

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