Current Mode Control
Current mode control, one of the hot new subjects of power electronics, has
actually been in use for many years under another name — the
discontinuous mode flyback converter. This paper details the principle of
current mode control, how it is supposed to work, what topologies come
closest to truly representing the concept, and how to test a current mode
converter to see if it is actually working as advertised. Description of an
implementation of the concept in a commercially available integrated
circuit is included, together with a description of the principles of
operation of a little-used topology that is one of the few true
implementations of the concept, the continuous-mode buck converter with
constant off-time.
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