Power Diodes

1
Power Diodes
2
Uses and Functions in Electronic Circuits
-switches in rectifiers
-freewheeling in switching regulators
-charge reversal of capacitor energy transfer
between components
-voltage isolation
-energy feedback from load to power source
-trapped energy recovery
Frequent use of power diodes is in rectification
process, in which ac signals having zero average
value are converted to ones having an average or
dc level.
3
Power diodes are constructed using silicon.
-higher current ratings -higher temperature
ratings -higher PIV ratings
4
Power diodes in parallel
increases current rating capability
Power diodes in series
increases PIV rating