Reverse Recovery Time (trr) - In general terms,
reverse recovery time is a measure of the time
needed for a rectifier diode to reach a state of
complete blocking (IR=0) upon the application of
a reverse bias. Ideally, this time should be zero. In
reality, however, there’s a finite period of time in
which a stored charge at the diode junction must
be “swept away” before the device can enter its
blocking mode. This stored charge is directly
related to the amount of forward current flowing
through the device just prior to the application of
the reverse bias. Fortunately, since operating currents
are very low in multiplier circuits, reverse
recovery times are kept to a minimum.
Nevertheless, trr plays an important role in multiplier
design.