4m resembles a control with voltage blocks, whichmeans that PWM in the
true sense no longer exists. In each case one switch is open or closed
respectively for 180°.
Dependency of theoutput voltage
on themodulation factorm
Further information regarding the subject of the modulation factor and modified PWM
variants can be found in chapter
3.2 Forward characteristicsof thediode
The forward characteristics of a diode are determined by
Forward current I
Forward slope resistance r
of the diode
Voltage rating (class) of the diode
Diode technology or generation
These parameters are summarisedgraphically in the I/Udiagram i
voltage rating and technology).