DQ63325QMA04 datasheet(6/15 Pages) SYNQOR | Dual Output, High Efficiency, Isolated DC/DC Converter

6 page

Product # DQ63325QMA04

Phone 1-888-567-9596

Doc.# 005-2DQ632H Rev. C

7/7/04

Page 6

Performance Curves

48Vin 3.3/2.5Vout 40W

Quarter

Brick Dual

2.4

2.42

2.44

2.46

2.48

2.5

2.52

2.54

2.56

2.58

2.6

16/0

13.4/2

10.7/4

8.1/6

5.4/8

2.8/10

0/12

IOUT1 / IOUT2 (A)

3.2

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

2.5V_48Vin

3.3V_48Vin

2.4

2.42

2.44

2.46

2.48

2.5

2.52

2.54

2.56

2.58

2.6

9.6/0

7.6/1.5

5.6/3

3.6/4.5

1.6/6.1

0/7.3

IOUT1 / IOUT2 (A)

3.2

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

2.5V_48Vin

3.3V_48Vin

Figure 7: Load regulation vs. load current with power fixed at full load

(40W) and load currents split as shown between 2.5V and 3.3V outputs,

at nominal input voltage.

Figure 8: Load regulation vs. load current with power fixed at 60%

load (24W) and load currents split as shown between 2.5V and 3.3V

outputs, at nominal input voltage.

Figure 9: Load regulation vs. output power from 6.7W load to full load

with 75% load on 2.5V output and 25% load on 3.3V output at nominal

input voltage.

Figure 10: . Load regulation vs. output power from 5.4W load to full

load with 25% load on 2.5V output and 75% load on 3.3V output at

nominal input voltage.

2.4

2.42

2.44

2.46

2.48

2.5

2.52

2.54

2.56

2.58

2.6

6.7

13.3

20.0

26.5

33.2

40.0

Total Output Power (W)

3.2

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

2.5V_48Vin

3.3V_48Vin

Figure 11: Maximum output power-derating curves vs. ambient air tem-

perature for airflow rates of 0 to 400 LFM, air flowing from pin 1 to pin

3. Full load (16A) on 2.5V output and no load on 3.3V output.

2.4

2.42

2.44

2.46

2.48

2.5

2.52

2.54

2.56

2.58

2.6

5.4

13.4

20.0

26.6

33.3

40.0

Total Output Power (W)

3.2

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

2.5V_48Vin

3.3V_48Vin

Figure 12: Thermal plot of converter at 15 amp load on 2.5V ouput and

no load on 3.3V output with 55°C air flowing at 200 LFM. Air flow

across the converter is from pin 1 to pin 3 (nominal input voltage)

2540

5570

Ambient Air Temperature (oC)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

0 LFM (0 m/s)

Vin = 48V

Semiconductor junction temperature is

within 1

°C of surface temperature

Semiconductor junction temperature is

within 2

°C of surface temperature

Semiconductor junction temperature is

within 2

°C of surface temperature

Input voltage has virtually no

effect on cross regulation

Input voltage has virtually no

effect on cross regulation

Input voltage has virtually no

effect on cross regulation

Input voltage has virtually no

effect on cross regulation

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