Delta Electronics Series Q48DR manual Features Descriptions Con, Trim Resistor Vout Increase

FEATURES DESCRIPTIONS (CON.)

Figure 21: Circuit configuration for trim-up (increase output voltage)

If the external resistor is connected between the TRIM and RTN, the output voltage set point increases (Fig. 21). The external resistor value is from table below.

Trim Resistor

(Vout Increase)

Δ[%] Rtrim-up [KΩ]

157.4

225.5

314.9

49.57

56.38

64.26

72.47

81.60

9709

10 0

Trim Resistor

(Vout Decrease)

Δ[%] Rtrim-down [KΩ]

170.2

231.2

318.2

411.7

57.80

65.20

73.34

81.95

9867

10 0

The output voltage can be increased by the trim pin, When using trim; 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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DS_Q48DR1R833_03162007