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BC048A160T024FP 参数 Datasheet PDF下载

BC048A160T024FP图片预览
型号: BC048A160T024FP
PDF下载: 下载PDF文件 查看货源
内容描述: BCM ™母线转换器 [BCM™ Bus Converter]
分类和应用: 转换器电源电路
文件页数/大小: 11 页 / 1112 K
品牌: VICOR [ VICOR CORPORATION ]
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APPLICATION NOTES AND TEST CIRCUIT  
Parallel Operation  
Anomalies in the response of the source will appear at the output of the  
BCM multiplied by its K factor. The DC resistance of the source should be  
kept as low as possible to minimize voltage deviations. This is especially  
important if the BCM is operated near low or high line as the over/under  
voltage detection circuitry could be activated.  
The BCM will inherently current share when operated in an array. Arrays  
may be used for higher power or redundancy in an application.  
Current sharing accuracy is maximized when the source and load impedance  
presented to each BCM within an array are equal. The recommended  
method to achieve matched impedances is to dedicate common copper  
planes within the PCB to deliver and return the current to the array, rather  
than rely upon traces of varying lengths. In typical applications the current  
being delivered to the load is larger than that sourced from the input,  
allowing traces to be utilized on the input side if necessary. The use of  
dedicated power planes is, however, preferable.  
Input Fuse Recommendations  
VI BRICKs are not internally fused in order to provide flexibility in  
configuring power systems. However, input line fusing of VI BRICKs must  
always be incorporated within the power system. A fast acting fuse should  
be placed in series with the +In port. For agency approvals and fusing  
conditions, click on the link below:  
The BCM power train and control architecture allow bi-directional power  
transfer, including reverse power processing from the BCM output to its  
input. Reverse power transfer is enabled if the BCM input is within its  
operating range and the BCM is otherwise enabled. The BCMs ability to  
process power in reverse improves the BCM transient response to an output  
load dump.  
http://www.vicorpower.com/technical_library/technical_documentation/quality_and  
_certification/safety_approvals/  
Application Notes  
Input Impedance Recommendations  
For BCM and VI BRICK application notes on soldering, board layout, and  
system design please click on the link below:  
To take full advantage of the BCM capabilities, the impedance presented  
to its input terminals must be low from DC to approximately 5 MHz. The  
source should exhibit low inductance (less than 100 nH) and should have a  
critically damped response. If the interconnect inductance exceeds 100 nH,  
the BCM input pins should be bypassed with an RC damper (e.g., 47 µF in  
series with 0.3 Ω) to retain low source impedance and stable operations.  
Given the wide bandwidth of the BCM, the source response is generally  
the limiting factor in the overall system response.  
http://www.vicorpower.com/technical_library/application_information/  
Applications Assistance  
Please contact Vicor Applications Engineering for assistance,  
1-800-927-9474, or email at apps@vicorpower.com.  
Input reflected ripple  
measurement point  
7 A[a]  
Fuse  
F1  
+
+
+IN  
+OUT  
-OUT  
+OUT  
Enable/Disable Switch  
R3  
10 mΩ  
C1  
47 µF  
electrolytic  
TM  
RSV  
PC  
R2  
BCM  
Load  
2 kΩ  
C3  
10 µF  
D1  
SW1  
-OUT  
-IN  
Notes:  
1. Source inductance should be no more than 200 nH. If source inductance is greater than 200 nH, additional bypass capacitance may be required.  
2. C3 should be placed close to the load.  
3. R3 may be ESR of C3 or a separate damping resistor.  
4. D1 power good indicator will dim when a module fault is detected.  
[a]  
See Input Fuse Recommendations section  
Figure 15 — VI BRICK BCM test circuit  
Bus Converter Module  
BC048A160T024FP  
vicorpower.com  
Rev. 1.1  
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