Overview:
The input current of switching power converters has both DC (average)
and AC (ripple) components. The average input current is usually specified
(in amperes) at two extremes: the no load or quiescent value and the full-load
value. Most modular DC/DC converters will draw their maximum input current
under low-line, full-load conditions.
Procedure:
The average input current is straightforwardly measured using a DMM or
a current probe. It should be measured under a variety of combinations
of Vin and Iout as appropriate.
|
.png)
.png)