Stability
Using remote sensing under certain combinations of load lead lengths and large load capacitances
may cause your application to form a filter, which becomes part of the voltage feedback loop.
The extra phase shift created by this filter can degrade the power supply’s stability, resulting in
poor transient response or loop instability. In severe cases, it may cause oscillations.
To minimize this possibility, refer to below method.
▌
Keep the load leads and sense leads as short as possible.
▌
Twist the load leads and sense leads together.
▌
Connect sense leads safely to the DUT.
As the sense leads are part of the power supply’s programming feedback loop,
accidental open-connections of sense or load leads during remote sensing operation
▌
Reminder never connect the load leads to sense lead terminal.
Connecting Remote Voltage Sensing
Remote voltage sensing requires connecting the load leads from output terminals to the load and
connecting the sense leads from sense terminals to the load as shown below.
Observe polarity when connecting the sensing leads to the load. Never connect the load leads
to sense lead terminal. If you connect, the power supply can be under unregulated state.
Notice that the copper shorting wires should be removed from he output and sense terminals for
remote voltage sensing connections. For local voltage sensing connections, the sense leads must be
connected to the output terminals
< Figure 3-1 >
Note
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