DS_V48SC3R325_06262013

E-mail: DCDC@delta.com.tw

http://www.delta.com.tw/dcdc

P10

THERMAL CURVES

(WITHOUT HEAT SPREADER)

HOT SPOT1

AIRFLOW

NTC RESISTOR

Figure 18: * Hot spot 1& NTC resistor temperature measured

points

0

5

10

15

20

25

25

30

35

40

45

50

55

60

65

70

75

80

85

Output Current (A)

Ambient Temperature (℃)

V48SC3R325(Standard) Output Current vs. Ambient Temperature and Air Velocity

@Vin = 48V (Either Orientation)

Natural

Convection

100LFM

200LFM

300LFM

400LFM

500LFM

600LFM

Figure 19: Output current vs. ambient temperature and air

velocity @Vin=48V(Either Orientation, airflow from Vin- to

Vin+,without heat spreader)

THERMAL CURVES

(WITH HEAT SPREADER)

HOT SPOT2

AIRFLOW

Figure 20: * Hot spot 2 temperature measured point

0

5

10

15

20

25

25

30

35

40

45

50

55

60

65

70

75

80

85

Output Current (A)

Ambient Temperature (℃)

V48SC3R325(Standard) Output Current vs. Ambient Temperature and Air Velocity

@Vin = 48V (Either Orientation,with Heat Spreader)

Natural

Convection

100LFM

200LFM

300LFM

400LFM

500LFM

Figure 21: Output current vs. ambient temperature and air

velocity @Vin=48V(Either Orientation, airflow from Vin- to

Vin+,with heat spreader)