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CONCLUSIONS The objectives of this thesis has been to study the reduction of reverse recovery in
 

Summary: 107
CHAPTER V
CONCLUSIONS
The objectives of this thesis has been to study the reduction of reverse recovery in
low and high voltage diodes and bipolar transistors by the incorporation of universal
contact and its effects on other device characteristics. The conclusions drawn from the
present work are summarized below.
5.1 DIODE
1. The use of n+
p+
"universal contact" for improving the switching
performance of power diodes was examined in detail through modeling of
effective minority carrier lifetime (eff). It was shown that eff depends not
only on the lifetime in the lightly doped region but also on other time
constants determined by the fraction of total current that results from the
injection of minority currents into p+
and n+
region. Using this viewpoint,
it is shown that effective minority carrier lifetime and therefore reverse
recovery time which is closely related to it, can be reduced by

  

Source: Anand, Raghubir Singh - Department of Electrical Engineering, Indian Institute of Technology Kanpur

 

Collections: Engineering