Wednesday, 13 December 2017

Power Electronics

Definition of Power Electronics

 Power Electronic is a technology associated with efficient conversion and control of electrical power by using Power semiconductor device.

    
There are two types of semiconductor devices
1)      Signal level semiconductor device
2)      Power level semiconductor device
Signal level semiconductor device
Rating of signal level  semiconductor device.
Voltage: -30 < V < +30
Current: Several micro-Amp to few Amp
Power: Several mW to few W

Ø  Signal level semiconductor devices are used in low power and high frequency application.
Ø This semiconductor devices are heavily doped.
Datasheet of signal level device.
1) Si2302CDS (N-channel MOSFET)
2) 1N4728A( Zener Diodes)

Power level semiconductor device
Rating of signal level  semiconductor device. 
Ø  Voltage: Several Volt to Kilo-Volt. 
Ø  Current: Several Amp to  Kilo-Amp.
Ø  Power: Several Watts to few M-Watts.
Power level semiconductor devices are used in high power and low frequency application.
Datasheet of  Power level device.
1) STY60NM50(N-Channel MOSFET)
2) IRFP460(N-Channel MOSFET)
3) SCT30N120


Difference between signal and power diode

 
Power diode have high blocking voltage capability compare to signal diode. N- (lightly doped) layer decide blocking voltage capability.

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