SOA of MOS Controlled Thyristor (MCT)
- Figure shows the SOA of the MCT. It is limited by the maximum controllable anode current, maximum power dissipation and the maximum temperature of the device.
- With increase in anode cathode voltage, we must decrease the maximum current (derating) due to power dissipation.
- We may not need a snubber for MCT.
Advantages of MOS Controlled Thyristor (MCT)
- MCT is a voltage controlled device.
- The switching loss is low.
- MCT can be turned off easily.
- High input impedance due to MOS input structure.
- Low forward on state voltage drop.
- Simpler gate driving circuit.
- Short turn on and turn off delays.
- Parallel connection is easy.
Demerits of MOS Controlled Thyristor (MCT)
- The reverse blocking capacity of MCT is low.
- It needs wider turning off gate pulse.
- There is a possibility of device destruction if it is turned off at higher current levels.
Applications of MOS Controlled Thyristor (MCT)
Following are the applications of MCT
- Circuit breakers.
- High power converters.
- Induction heating.
- UPS systems.
- DC to DC converters.