Measuring Drain Current on LNK625
in your technical documentation you advise not trying to measure IDrain via the voltage drop of a resistor placed in series to the Source, as this would modulate the Source voltage and the device may malfunction. You recommend to use an adequate scope current probe clamped to a small wire loop in series to the Drain terminal, instead.
Now, would it be possible to place a small resistor in series to the Drain terminal instead than to the Source, and measure the current via the voltage drop on it? An isolated scope voltage probe would of course be used for performing such measure.
In case this is feasible, what kind (value and technology) of resistor would you suggest?