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LiAM Description
3.4 Adaptive Rail Switching
The LiAM power supply is designed in order to obtain minimum irradiated
and conducted noise by using linear AC/DC stages, linear DC/DC stages and analog
control loop of the output current.
In order to optimize the overall efficiency of the unit, thus reducing internal
power dissipation (and cooling) and increasing reliability, an "adaptive" technique of
voltage rail switching was especially implemented.
The output stage is composed of a linear bipolar (true zero-crossing) power
circuit configuration which sources or sinks current from two symmetrical voltage
rails – i.e. positive and negative.
An internal automatic rail switching technique allows the rails of the units to
switch between three different voltage levels:
-
OFF;
-
MID voltage;
-
HIGH voltage.
This technique works correctly in conjunction with the automatic load
recognition function – i.e. MTUNE\r – and yields a "predictive" switching of these
rail values in a completely transparent way for the users, taking part of the advantages
of class-G amplifiers, even though the LiAM is not a class-G).
LiAM User's Manual
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