Product # PQ30033QGA25

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2QG33LU Rev. B

4/28/05

Page 5

Input:

Input:

Output:

Output:

Current:

Current:

P

ackage:

18-60 V

18-60 V

3.3 V

3.3 V

25 A

25 A

Quarter-brick

Quarter-brick

T

pecification

60

65

70

75

80

85

90

95

0

5

10

15

20

25

Load Current (A)

18 Vin

48 Vin

60 Vin

Figure 1: Efficiency at nominal output voltage vs. load current for min-

86

87

88

89

90

91

92

100

200

300

400

Air Flow (LFM)

25 C

40 C

55 C

Figure 2: Efficiency at nominal output voltage and 60% rated power vs.

input).

0

1

2

3

4

5

6

7

8

9

10

11

12

0

5

10

15

20

25

Load Current (A)

18 Vin

48 Vin

60 Vin

Figure 3: Power dissipation at nominal output voltage vs. load current

3

4

5

6

7

8

100

200

300

400

Air Flow (LFM)

25 C

40 C

55 C

Figure 4: Power dissipation at nominal output voltage and 60% rated

0

5

10

15

20

25

0

2540

5570

85

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

Figure 5: Maximum output power derating curves vs. ambient air tem-

perature for airflow rates of 100 LFM through 400 LFM with air flow-

ing across the converter from pin 3 to pin 1 (24V input).

air flowing at the rate of 200 LFM. Air is flowing across the converter

sideways from pin 3 to pin 1 (24V input).

Semiconductor junction temperature is

within 1

°C of surface temperature