S48SA1R510NRFC データシートの表示（PDF） - Delta Electronics, Inc.

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S48SA1R510NRFC

Delphi Series S48SA, 33W Family DC/DC Power Modules: 48V in, 1.2V/12A out

Delta Electronics, Inc. 

FEATURES DESCRIPTIONS (CON.)

Output Voltage Adjustment (TRIM)

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.

percentage output voltage change △Vo% is defined as:

Rtrim − up = 15.9(100 + ∆Vo%) − 1089 − 62[ΚΩ]

∆Vo%

Ex. When trim-up +10% (1.2V X 1.1 = 1.32V)

Rtrim − up = 15.9(100 + 10) − 1089 − 62 = 4[ΚΩ]

10

Care should be taken to ensure that the maximum

output power of the module remains at or below the

maximum rated power.

Figure 15: 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.

The external resistor value required to obtain a

percentage of output voltage change △Vo% is defined

as:

Rtrim − down = 1089 − 62[ΚΩ]

∆Vo%

Ex. When trim-down –10% (1.2V X 0.9 = 1.08V)

Rtrim − down = 1089 − 62 = 46.9[ΚΩ]

10

Figure 16: Circuit configuration for trim-up (increase output

voltage)

If the external resistor is connected between the TRIM

and Vo+ pins, the output voltage set point increases.

The external resistor value required to obtain a

8

DS_S48SA1R212_05122006

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