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DCDC modules not giving Remote Sense details.

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cupoftea

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Hi,
The attached shows a Buck converter with remote sense connections. The remote sense connection is also used , by adding a resistor, to do the Load sharing.
As can be seen, the full internal connection schematic of the remote sense lines are needed. Otherwise the Load share circuit cannot be done.
Why is is that no offTheShelf DCDC modules ever provide the details of the sense circuit connection inside the module…….the module simply cannot be reliably used if the internals are not known.
(LTspice and jpeg attached)
 

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  • Remote sense and pllel SMPS.jpg
    Remote sense and pllel SMPS.jpg
    227.8 KB · Views: 75
  • 2 Buks _LoSideSense_Remote Sense.zip
    7.6 KB · Views: 82

Take for example the below....it gives no details of the value of the internal "remote sense resistors"....

DCDC module with remote sense.

...these values are needed so one can see that the external Load share resistor that one adds, is not going to cause issues.
Why do they not give this essential info?
 

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