Semiconductor Power Devices

Choose controllable power switches in these following list:

• BJTs

• Diodes

• MOSFETs

• Thyristors

Select the functions of a driver circuit in power electronics?

• Amplify a control signal generated by a control circuit.

• Generate a control signal to initiate a power switch operation.

• Protect the control circuit from damage.

• The interface between a control circuit and a power switch.

A semiconductor power device can conduct current when it is in forward-biased condition.

• True

• False

Heat sinks can be used to dissipate heat produced by the forward conduction power losses.

• True

• False

A Schottky diode conducts high current during _____ with _____ reverse recovery time.

• forward-biased; short

• forward-biased; very short

• reverse-biased; short

• reverse-biased; very short

This power switch exhibits _______ current gain with _________ gate current.

• high, low

• low, high

• high, high

• low, low

Choose the correct answer.

• A

• B

• C

• D

BJTs and IGBTs generate low on-state conduction power losses.

• True

• False

At the same on-state voltage value, IGBTs can conduct ______ current than MOSFETs with ______ switching time.

• higher; higher

• lower; higher

• higher; lower

• lower; lower

Selection of suitable power switches in any application depends on _____ and ______.

• on-state voltage

• operating frequency

• power capacity

• power losses