in punch through effect what diode lost, due to which it is no more diode.
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Commercial power diodes are optimized to feature punch through behavior.
Explanation:
- A tradeoff between the width and the doping level of the diode epitaxial layer leads to various levels of optimization.
- For a given breakdown voltage, a shorter epitaxial layer width leads to better transient performances.
- Device datasheets do not cover this issue and a simple experimental setup is presented to assess the optimization conditions inside the diode epitaxial layer.
- Three commercial devices are tested and experimental results are confronted to device simulations.
- The diode transient behavior is related mainly to the shape of the doping profile and the effective lifetime inside the epitaxial layer.
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1.In punch through effect what diode is lost,due to which it is no more diode.
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