Product # BQ57090EZB48

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0006443 Rev. E

02/17/16

Page 6

Input:

40-65V

Output:

9.6V

Current:

48A

Package:

Eighth-brick

0

5

10

15

20

0

12

24

36

48

Load Current (A)

40 Vin

48 Vin

65 Vin

60

65

70

75

80

85

90

95

100

0

12

24

36

48

Load Current (A)

40 Vin

48 Vin

65 Vin

96.0

96.5

97.0

97.5

98.0

98.5

99.0

100

200

300

400

Air Flow (LFM)

25º C

40º C

55º C

Semiconductor junction temperature is

within 1°C of surface temperature

5

6

7

8

9

100

200

300

400

Air Flow (LFM)

25º C

40º C

55º C

0

10

20

30

40

50

25

40

50

60

70

85

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

100

200

300

400

500

25

40

50

60

70

85

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)

Figure 1: Efficiency at nominal output voltage vs. load current for minimum,

nominal, and maximum input voltage at 25°C.

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

rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input

voltage).

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

minimum, nominal, and maximum input voltage at 25°C.

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

vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal

input voltage).

Figure 5: Maximum output current derating curve vs. ambient air temperature

(with baseplate only) at different airflow rates with air flowing from output to

input (nominal input voltage).

Figure 6: Maximum output power derating curve vs. ambient air temperature

(with baseplate only) at different airflow rates with air flowing from output to

input (nominal input voltage).

Technical Figures

Technical Figures