Schottky Diodes: Advantages and Disadvantages
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SCHOTTKY DIODE
GT ECE ACADEMIC LAB
SLIDES BY ZACHARY CHAN
OVERVIEW
•
Similar to regular PN junction
diodes (only allows current to flow
in one direction)
•
Has advantages and
disadvantages
•
Very useful for switch mode power
supplies
•
Very efficient
ADVANTAGES
•
Fast switching action
•
PN junction struggle to block reverse current when a high frequency (100kHz) is applied
•
Schottky diodes can handle frequencies well beyond 100kHz
•
Good for high frequency applications such as switch mode power supplies like boost and
buck converters
•
Low voltage drop
•
Higher efficiency than regular PN junction diodes
•
Does not generate as much heat as PN junction diodes
DISADVANTAGES
•
Higher reverse leakage current
•
When reverse biased, Schottky diodes allow more current to flow than PN junction diodes
which can damage the circuit
•
Generally costs more
COMPONENT
Schottky diodes, similar to regular PN junction diodes, allow current to flow in one direction only. They are highly efficient and useful for switch mode power supplies, offering advantages such as fast switching action, high-frequency handling capability, low voltage drop, and higher efficiency. However, they have disadvantages including higher reverse leakage current and cost implications compared to PN junction diodes.
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Presentation Transcript
SCHOTTKY DIODE GT ECE ACADEMIC LAB SLIDES BY ZACHARY CHAN
OVERVIEW Similar to regular PN junction diodes (only allows current to flow in one direction) Has advantages and disadvantages Very useful for switch mode power supplies Very efficient
ADVANTAGES Fast switching action PN junction struggle to block reverse current when a high frequency (100kHz) is applied Schottky diodes can handle frequencies well beyond 100kHz Good for high frequency applications such as switch mode power supplies like boost and buck converters Low voltage drop Higher efficiency than regular PN junction diodes Does not generate as much heat as PN junction diodes
DISADVANTAGES Higher reverse leakage current When reverse biased, Schottky diodes allow more current to flow than PN junction diodes which can damage the circuit Generally costs more
