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1. What is the voltage of CB terminal when using current balance function with CB terminal (load:100%) for DBS400B24/DBS400B24-XNHM?
Answer : CB terminal voltage (100% load)
DBS400B24 : 6.6V approximately
DBS400B24-XNHM : 6.2V approximately
* (+/-10% approximately) |
2. Is it possible for 3pcs PBA300F-48 3 pcs in parallel operation with the following functions?
N+1 parallel operation, current sharing and hot swap function. Normally 3 pcs are working with current sharing. When one pcs is broken,the other 2 pcs can also work with current sharing and the broken one can be hot swap.
Answer : Please check the attached pdf file. |
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3. When 2 pcs DBS400B24-XNHM are in parallel operation, CB and VB of 2 pcs DBS400B24-XNHM are connected together for current balance and add diode on the output side of power module.But we found that when the input voltage of 1 pcs DBS400B24-XNHM was turned off, the other DBS400B24-XNHM's output voltage would drop to 23.1VDC.When we did not connect CB and VB together,the output voltage would be stable at 24VDC even another power module was turned off. But we request the output voltage should be 24VDC (Accuracy:+/- 0.5V) How should we connect in this case?
Answer :  |
4. We want to make parallel operation of one PBA600F-12 and other power source is DC12V like DC generator. What is the connection method of PBA600F-12 output terminal?
Answer : This parallel connection is used for redundancy.
Therefore, VB balance and CB balance are not needed to operate.
Please connect like below.
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5. We used 2 pcs CBS1004805 in parallel operation but we worried about CBS series without VB & CB function,only use diode in the catalog. If diode is used, it will make the ambient temperature very high.So are there any other solution?
Answer : If it is for increasing output power, CBS1004805 can not be used.
Because the module doesn't have VB and CB terminal.
So, output current will exceed rated current.
We recommend CDS4004805(400W) or CBS2004805(150W).
If it is for redundancy purpose, CBS1004805 can operate in such condition.
Output current is unbalanced, however output current will not exceed rated current.
Because output power can generate even if one module works only. |
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