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BQ2540-9P PDF预览

BQ2540-9P

更新时间: 2024-02-04 12:33:18
品牌 Logo 应用领域
BEL /
页数 文件大小 规格书
26页 2759K
描述
DC-DC Regulated Power Supply Module,

BQ2540-9P 技术参数

生命周期:Not Recommended包装说明:,
Reach Compliance Code:compliant风险等级:5.74
模拟集成电路 - 其他类型:DC-DC REGULATED POWER SUPPLY MODULEBase Number Matches:1

BQ2540-9P 数据手册

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Q Series Data Sheet  
66 132 Watt DC-DC Converters  
®
The current limitation is located at the primary side, thus  
limiting the total output current in overload conditions. This  
allows flexible loading of each output for unsymmetrical loads  
in the range 10 to 90% of the total output power. In applications  
with large dynamic load changes, we recommend connecting  
such a load to output 1. If output 2 is not used, it should be  
connected parallel to output 1. Both outputs can either be  
series- or parallel-connected (see Electrical Output Data).  
Functional Description  
The converters are designed as forward converters using  
primary and secondary control circuits in SMD technology. The  
switching frequency is approximately 200 kHz under nominal  
operating conditions. The built-in high-efficient input filter  
together with a small input capacitance generate very low  
inrush currents of short duration. After transformer isolation  
and rectification, the output filter reduces ripple and noise to a  
minimum without compromising the dynamic ability. The  
output voltage is fed to the secondary control circuit via  
separate sense lines. The resultant error signal is sent to the  
primary control circuit via a signal transformer.  
In normal operation, the internal control circuits are powered  
by a third winding of the main choke (except 48Q models).  
Start-up is ensured from the input voltage by a linear regulator.  
Note: When the output voltage is much lower then the nominal  
value, this linear regulator is activated, generating considerable  
power losses.  
Double-output models have the voltage regulation of output 2  
relying on the close magnetic coupling of the transformer and  
the output inductor together with the circuits' symmetry.  
03111a  
2
22  
24  
18  
Out OK+  
Out OK–  
T
Output  
control  
Primary  
control circuit  
28  
i
Output  
monitor  
16 R3  
S+1  
12  
4
6
Vi+ 30  
Vo+  
Vo+  
Input  
filter  
Output  
filter  
Vi–  
8
32  
26  
Vo–  
Vo–  
S–1  
Fuse  
10  
1
Cy  
Cy  
14  
Isolation  
20  
4
1 Leading pins  
2 Potentiometer for option P 3 Do not connect for models xQ1101 or with option P 4 Do not connect  
Fig. 6  
Block diagram of a single-output converter  
03112a  
2
22  
Out OK+  
Out OK–  
T
24  
18  
16  
Output  
control  
Primary  
control circuit  
28  
i
Output  
monitor Vo2  
R3  
6
Vo2+  
Output  
filter  
Vi+ 30  
10 Vo2–  
Input  
filter  
S+1  
12  
Vo1+  
4
Vi–  
32  
26  
Fuse  
Output  
filter  
Cy  
1
8
Vo1–  
S–1  
14  
Cy  
Isolation  
20  
4
1 Leading pins  
2 Potentiometer for option P 3 Do not connect for models with option P 4 Do not connect  
Fig. 7  
Block diagram of a double-output converter  
BCD20011-G Rev AG, 12-Mar-2012  
Page 5 of 26  
www.power-one.com  

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