bq50120qta20pysbq55090qta27pyc SynQor Worldwide Headquarters, bq50120qta20pysbq55090qta27pyc Datasheet - Page 5

• Manufacturer Part Number: bq50120qta20pysbq55090qta27pyc
• Description: Quarter-brick Dc Busconverter
• Manufacturer: SynQor Worldwide Headquarters

Product # BQ50120QTA20
T
T
echnical S
echnical S
Figure 1: Efficiency at nominal output voltage vs. load current for min-
imum, nominal, and maximum input voltage at 25
Figure 3: Efficiency at nominal output voltage and 60% rated power vs.
airflow rate for ambient air temperatures of 25
(nominal input voltage).
Figure 5: Maximum output power derating curves vs. ambient air tem-
perature for airflow rates of 0 LFM through 400 LFM with air flowing
from pin 3 to pin 1 (nominal input voltage).
20
18
16
14
12
10
100
98
97
96
95
94
93
92
8
6
4
2
0
98
96
94
92
90
88
86
84
82
80
0
0
0
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)
2
100
25
4
pecification
pecification
Ambient Air Temperature (
6
200
40
Phone [phone]
Load Current (A)
Air Flow
8
10
(LFM)
300
55
12
°
C, 40
°
o
14
C.
C)
°
C, and 55
400
70
16
42 Vin
48 Vin
52 Vin
18
www.synqor.com
25 C
40 C
55 C
°
C
500
20
85
Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
Figure 4: Output voltage regulation vs. load current for minimum, nom-
inal, and maximum input voltage at 25
Figure 6: Thermal plot of converter at 20 amp load current (240W)
with 55
converter from pin 3 to pin 1 (nominal input voltage).
15
14
13
12
11
10
10
9
8
9
8
7
6
5
4
3
2
1
0
°
0
0
C air flowing at the rate of 200 LFM. Air is flowing across the
Doc.# 005-2BQ512J Rev. E
2
2
42Vin
48Vin
52Vin
4
4
6
6
Semiconductor junction temperature is
P
P
within 1°C of surface temperature
Current:
Current:
ackage:
ackage:
Output:
Output:
Load Current (A)
Load Current (A)
8
8
Input:
Input:
10
10
°
C.
12
12
03/17/06
42-53 V
12 V
20 A
Quarter-brick
42-53 V
12 V
20 A
Quarter-brick
14
14
16
16
°
C.
42 Vin
48 Vin
52 Vin
18
18
Page 5
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20