ACT4529
Rev 4, 06-Jan-2017
FUNCTIONAL DESCRIPTION
Cord Compensation
In some applications, the output voltage is increased
with output current to compensate the potential
voltage drop across output cable. The compensation
is based on the high side feedback resistance.
The compensation voltage is derived as:
ÄVout = (VCSP-VCSN)*K
Where K=3.03
This voltage difference could be added on the
reference or turning the (VCSP-VCSN) voltage into a
sink current at FB pin to pull Vout higher than
programmed voltage.
The cord compensation loop should be very slow to
avoid potential disturbance to the voltage loop. The
voltage loop should be sufficiently stable on various
cord compensation setting.
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