参数资料
| 型号： | SSQL48T20033-NDABG |
| 厂商： | Power-One |
| 文件页数： | 9/14页 |
| 文件大小： | 0K |
| 描述： | CONV DC-DC 3.3V 20A 1/16 BRICK |
| 标准包装： | 98 |
| 系列： | SSQL48T20033 |
| 类型： | 隔离 |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 36V |
| 电压 - 输入（最大）： | 75V |
| Voltage - Output 1： | 3.3V |
| 电流 - 输出（最大）： | 20A |
| 电源（瓦） - 制造商系列： | 66W |
| 电压 - 隔离： | 2.25kV（2250V） |
| 特点： | 具有远程开/关功能和 UVLO |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP 模块，1/16 砖 |
| 尺寸/尺寸： | 1.30" L x 0.90" W x 0.50" H（33.0mm x 22.9mm x 12.7mm） |
| 包装： | 散装 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 90.5% |
| 电源（瓦特）- 最大： | 66W |
| 其它名称： | 179-2429 |
SSQL48T20033 DC-DC Converter Data Sheet
36-75 VDC Input; 3.3 VDC @ 20A Output
Ripple and Noise
i S
i C
Figure 13 shows the output voltage ripple waveform,
measured at full rated load current with a 10μF
tantalum and a 1μF ceramic capacitor across the
output. Note that all output voltage waveforms are
measured across the 1μF ceramic capacitor.
10 μ H
source
inductance
V source
33 μ F
ESR < 1 ?
electrolytic
capacitor
SSQL 48
DC -DC
Converter
1 μ F
Ceramic
+ 10 μ F
Tantalum
Capacitor
Vout
The input reflected-ripple current waveforms are
obtained using the test setup shown in Fig. J. The
corresponding waveforms are shown in Figure 14, and
Figure 15.
25
20
15
Fig. J:
25
20
15
Test setup for measuring input reflected ripple
currents, i c and i s .
10
5
0
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
10
5
0
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Ambient Temperature [°C]
Figure 1.
25
20
15
10
5
Available load current vs. ambient air temperature
and airflow rates for SSQL48T20033 converter
mounted vertically with air flowing from pin 3 to
pin 1, T C temperatures ≤ 120 ° C, Vin = 48 V.
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
Figure 3. Intentionally left blank for future use.
25
20
15
10
5
0
20
30
40
50
60
70
80
90
0
20
30
40
50
60
70
80
90
100
110
Ambient Temperature [°C]
Figure 2. Power derating of SSQL48T20033 converter with
baseplate option and 0.5” tall horizontal-fin
heatsink. (Conditions: same as Figure 1)
Baseplate Temperature [°C]
Figure 4. Power derating of SSQL48T20033 converter with
baseplate option and coldplate cooling.
(Conditions: Air velocity ≤ 30LFM (≤ 0.15m/s),
Vin = 48 V, T B ≤ 85°C )
No thermal derating required.
Rev 0.2, 03-Mar-11
www.power-one.com
Page 9 of 14
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