A charger supplies 100 W at 20 V for charging the battery of a laptop. The power devices, used in the converter inside the charger, operate at a switching frequency of 200 kHz. Which power device is best suited for this purpose?
MOSFET
At 100 W and 200 kHz, a MOSFET offers fast majority-carrier switching and simple voltage-controlled drive. A conventional thyristor cannot be gate-turned off, while the listed bipolar devices generally incur greater drive or turn-off costs at this frequency.
Important Questions from Power Semiconductor Diodes and Transistors
Which semiconductor power device, out of the following, is not a current triggered device?
Diacs are primarily used as:
Which of the following circuit is used to obtain pulse gate triggering?
The figure shows a straight-line approximation for the forward characteristics of a power diode. A continuous on-state current of 15 A is flowing through the diode.
What is the power loss in the diode?
For a system with $G(S)=\frac{k}{S(S+1)(S+2)}$, $H(S)=1$. Determine the brake away point.
