Application Notes

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PTH Series of Wide-Output Adjust

Power Modules (3.3/5-V Input)

Remote Sense

The PTHxx060W, PTHxx010W, PTHxx020W, and

PTHxx030W products incorporate an output voltage

cation). A remote sense improves the load regulation

performance of the module by allowing it to compensate

for any ‘IR’ voltage drop between itself and the load. An

IR drop is caused by the high output current flowing

through the small amount of pin and trace resistance.

Use of the remote sense is optional. If not used, the

value resistor (15-

Ω or less) is connected between the

in regulation.

With the sense pin connected, the difference between

amount of IR drop being compensated by the regulator.

This should be limited to a maximum of 0.3 V.

Note: The remote sense feature is not designed to compensate

for the forward drop of non-linear or frequency dependent

components that may be placed in series with the converter

output. Examples include OR-ing diodes, filter inductors,

ferrite beads, and fuses. When these components are enclosed

by the remote sense connection they are effectively placed

inside the regulation control loop, which can adversely affect

the stability of the regulator.