Advantages and disadvantages of gate turnoff thyristor

Advantages of GTO :
  • Fast and efficient turn-off.
  • High efficiency.
  • Exhibits low gate currents.
  • Faster turn OFF permitting high switching frequencies.
  • High blocking voltage capabilities.
  • High over current capabilities.
  • High capability of blocking voltage.
  • Better for static and dynamic dv/dt capabilities.
  • It does not need to require the communication circuit, hence it reduced the size, weight, and cost.
Disadvantages of GTO :
  • Holding current and magnitude of latching current is more.
  • Gate drive circuit losses are more.
  • While GTO on state voltage drop is more.
  • Triggering gate current is much higher than that required for normal SCR.

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