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leads.
If
the sense terminals (S+ and S-) are left open as shown in Figure
A, the voltage at the output terminals will increase approximately
by 1 to 3% over the programmed value. And the feedback voltage
will not indicate this increase.
The dashed lines in Figure B illustrate remote sense connections. In this case, the
remote sense terminals of the power module are connected to the load rather than the
output terminals. This allows the power module to automatically compensate for the
voltage drop in the load leads as well as to accurately read back the voltage at the
load.
Considerations
During the operation of the power supply, various problems may occur because of the
difference in connected loads, which will be introduced as follow respectively.
Capacitive Load
In most cases, the power supply will be stable for capacitive load of any size. Load
with large capacitor may cause ringing in the power supply’s transient response. It is
possible that certain combinations of load will result in output instability. And the
problem may be solved by properly decreasing the total load capacitance.
A large capacitor at the output terminals may cause the power supply to cross into CC
or unregulated mode momentarily when the output is enabled. The slew rate of the
