Justify the statement. IGBT uses a vertically oriented structure.

Justify the statements.

1. IGBT uses a vertically oriented structure.

2. IGBT is preferred as a power switch over both power BJT and MOSFET.

3. Punch through IGBT structure are more popular and are widely used.
by
recategorized

1 Answer

Answer :

1. IGBT uses vertically oriented structure.

IGBT use vertically oriented structure to reduce the resistance and to increase the current flow area.
Hence IGBT uses vertically oriented structure.

2. IGBT is preferred as a power switch over both power BJT and MOSFET.
IGBT combines the qualities of BJT and MOSFET. The high switching speed of MOSFET and low conduction losses of BJT. Also, IGBT have low on-state losses as compared to BJT and MOSFET. IGBT have high input impedance. IGBT is a voltage controlled device, so the drive circuit of IGBT is simple. The current rating and voltage rating of IGBT is better as compare to BJT and MOSFET. The turn off time of IGBT is greater than MOSFET. Bipolar Junction transistor (BJT) have the second breakdown problem, but IGBT do not have second breakdown problem. So, IGBT combines the advantages of BJT and MOSFET hence, IGBT is preferred as a power switch over both BJT and MOSFET.

3. Punch through IGBT structure are more popular and are widely used.
Punch through IGBT have n+ buffer layer. In punch through IGBT the n+ buffer layer is in between n- and p+ layer. This n+ layer is for increasing the blocking voltage. Punch through IGBT have faster turn off. The on state losses will be less in punch through IGBT because of small n- drift region. Punch through IGBT is suitable for DC circuit applications. Hence punch through IGBT structure are more popular and are widely used.
by
selected

Related questions

Describe with neat sketch the constructional details of IGBT.

Description : Describe with neat sketch the constructional details of IGBT.

Last Answer : Construction: Insulated gate bipolar transistor or IGBT, is a solid state devices primarily used as an electronic switch which, as it was developed, came to combine high efficiency and fast ... layer and p+ emitter constitute a BJT with a wide base region and hence small current gain.

Draw construction of IGBT.

Description : Draw construction of IGBT.

Last Answer : construction of IGBT

Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ?

Description : Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ? (A) forward conduction (B) latching (C) forward blocking (D) reverse breakdown

Last Answer : Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ? (A) forward conduction (B) latching (C) forward blocking (D) reverse breakdown

Compare BJT, MOSFET and IGBT .

Description : Compare BJT, MOSFET and IGBT .

Last Answer : BJT MOSFET IGBT BJT is a current controlled device. MOSFET is a voltage controlled device. IGBT is a voltage controlled device. The input impedance of BJT is low. ... is minority carrier device. MOSFET is majority carrier device. IGBT is minority carrier device.

why IGBT is preferred as a power switch over both power BJT and MOSFET?

Last Answer : Because it has a higher switching frequency and heat tolerance.

explain the parallel operation of IGBT?

Description : Also, highlight the problem faced during parallel operation.

Last Answer : Parallel operation of IGBT: Parallel operation of IGBT is done for obtaining high current rating. Paralleling of IGBT reduces conduction losses and thermal stress. IGBT combines the qualities of ... . IGBTs must share losses equally otherwise IGBT may get failure due to thermal differences.

is igbt current controlled device ?

Last Answer : No, IGBT is not the current controlled device. IGBT is a voltage controlled device. IGBT have combine qualities of MOSFET and BJT. The high switching speed of MOSFET and low conduction losses of BJT. Also, IGBT which stands for Insulated Gate Bipolar Transistor have high input impedance.

igbt is unipolar or bipolar?

Last Answer : IGBT is a bipolar device.

why igbt is used in vfd?

Last Answer :  IGBT or Insulated Gate Bi-polar Transistors are typically semiconductor devices aka.  controlled switches,  which find their applications in Power Electronics circuits such as Inverters, and electrical ... ( buy implementing suitable Pulse Width Modulation scheme ) * Lower cost 

why igbt is bipolar?

Last Answer : IGBT is a bipolar device because current is carried by both holes and electrons.

why igbt is used instead of bjt and mosfet?

Last Answer : ON state losses of IGBT is less as compared to MOSFET and BJT.

What is the permissible flux density in case of cold rolled grained oriented steel?

Description : What is the permissible flux density in case of cold rolled grained oriented steel?

Last Answer : The permissible flux density in case of cold rolled grained oriented steel is 1.7 Wb/m2.

Give the applications of IGBT

Description : Give the applications of IGBT

Last Answer : 1) AC and DC motor drives 2) SMPS 3) Inverters 4) Choppers 5) Solid-state Relays 6) solid-state Contactors

The number of terminals present in IGBT is

Description : The number of terminals present in IGBT is A) 2 B) 3 C) 4 D) 5

Last Answer : The number of terminals present in IGBT is 3

is IGBT costlier than BJT and MOSFET?

Last Answer : Yes IGBT is costlier than BJT and MOSFET.

Describe IS – 95 forward link channel structure.

Description : Describe IS – 95 forward link channel structure.

Last Answer : The IS-95 forward Channel structure consists of four types of logical Channels - pilot Channel, synchronization Channel, paging Channel, and forward traffic Channels. Each forward carrier Channel contains one ... . This code is known as the channel identifier. This code is different for each user

The torque produced in induction type relay (shaded pole structure) is?

Last Answer : The torque produced in induction type relay (shaded pole structure) is inversely proportional to the square of the current.

EPROM internal structure

Description : EPROM internal structure

Last Answer : EPROM (Erasable Programmable ROM): EPROM stands for Erasable Programmable ROM.Data is stored in EPROM memory cell as an electrostatic charge on highly insulated conductor. The charge can remain for ... figure shows EPROM memory cell consisting of a single NMOS filed effect transistor. 

Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.

Description : Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.

Last Answer : Power MOSFET have high turning on and turning off capability high switching speed of MOSFET is due to the high rate of change of drain voltage. The switching losses of power MOSFET ... lower frequency. Hence, operating frequency of power MOSFET is higher than that of power BJT.

Justify the statement. Antiparallel diode is connected across MOSFET.

Description : Justify the statement. Antiparallel diode is connected across MOSFET.

Last Answer : In MOSFET current is flow from drain to source but when the load is inductive the current may flow in opposite direction. To avoid the opposite flow of current and to protect MOSFET the antiparallel diode is connected across MOSFET.

IGBT uses

Description : IGBT uses IGBT uses

Last Answer : Applications of IGBT: 1. The insulated gate bipolar transistor (IGBT) is used Ac and DC motor drivers. 2. The IGBT is used in unregulated power supply (UPS) system. 3. The IGBT is used to ... an isolated-gate FET for the control input and a bipolar power transistor as a switch in a single device.

State weather the following statement is true or false for Stream Control Transmission Protocol (SCTP). 1). SCTP uses only few known ports in the TCP space. 2).SCTP is a new transport protocol at the same layer as TCP and UDP. 3). SCTP is a new reliable, message oriented transport layer protocol. A. 1. True, 2. true, 3. true B. 1. true, 2. false, 3. false C. 1. false, 2. false, 3. false D. 1.false, 2. true, 3. true

Description : State weather the following statement is true or false for Stream Control Transmission Protocol (SCTP). 1). SCTP uses only few known ports in the TCP space. 2).SCTP is a new transport protocol at the same layer as TCP and ... , 3. false C. 1. false, 2. false, 3. false D. 1.false, 2. true, 3. true

Last Answer : D. 1.false, 2. true, 3. true

For IGBT, which of the following statement is true?

Description : For IGBT, which of the following statement is true?  (a) Switching speed of IGBT is more than bipolar transistor (b) IGBT is a current-controlled device (c) On-state collector- ... transistor (d) It combines voltage control features of MOSFET gate and high power capability of bipolar transistor

Last Answer : For IGBT, which of the following statement is true?  (a) Switching speed of IGBT is more than bipolar transistor (b) IGBT is a current-controlled device (c) On-state collector- ... transistor (d) It combines voltage control features of MOSFET gate and high power capability of bipolar transistor

Justify. Power MOSFET is operated at high enough gate source voltage to minimize the conduction losses.

Description : Justify. Power MOSFET is operated at high enough gate source voltage to minimize the conduction losses. 

Last Answer : MOSFET is metal oxide field effect transistor. MOSFET is a voltage controlled device. MOSFET is majority carrier device. MOSFET are of two one is n-channel MOSFET and p-channel MOSFET. Gate, ... . Hence, power MOSFET is operated at high enough gate-source voltage to minimize the conduction losses.

The transnational structure is: a) dominated by hierarchy. b) not dominated by hierarchyc) designed for vertically integrated international firm.d) appropriate for export firms.

Description : The transnational structure is: a) dominated by hierarchy. b) not dominated by hierarchy c) designed for vertically integrated international firm. d) appropriate for export firms.

Last Answer : appropriate for export firms.

Transmission control protocol ___________ a. is a connection-oriented protocol b. uses a three way handshake to establish a connection c. receives data from application as a single stream d. all of the mentioned

Description : Transmission control protocol ___________ a. is a connection-oriented protocol b. uses a three way handshake to establish a connection c. receives data from application as a single stream d. all of the mentioned

Last Answer : d. all of the mentioned

Transmission control protocol ___________ a. is a connection-oriented protocol b. uses a three way handshake to establish a connection c. receives data from application as a single stream d. all of the mentioned

Description : Transmission control protocol ___________ a. is a connection-oriented protocol b. uses a three way handshake to establish a connection c. receives data from application as a single stream d. all of the mentioned

Last Answer : d. all of the mentioned

Transmission control protocol is a) connection oriented protocol b) uses a three way handshake to establish a connection c) recievs data from application as a single stream d) all of the mentioned

Description : Transmission control protocol is a) connection oriented protocol b) uses a three way handshake to establish a connection c) recievs data from application as a single stream d) all of the mentioned

Last Answer : d) all of the mentioned

Binary symmetric channel uses (A) Half duplex protocol (B) Full duplex protocol (C) Bit oriented protocol (D) None of the above

Description : Binary symmetric channel uses (A) Half duplex protocol (B) Full duplex protocol (C) Bit oriented protocol (D) None of the above

Last Answer : (A) Half duplex protocol

IGBT is a voltage controlled device. Why?

Description : IGBT is a voltage controlled device. Why?

Last Answer : Because the controlling parameter is gate-emitter voltage.

Why IGBT is very popular nowadays?

Description : Why IGBT is very popular nowadays?

Last Answer : a. Lower hEAT requirements b. Lower switching losses c. Smaller snubber circuit requirements

What are the various parameters we have to consider, while selecting IGBT?

Description : What are the various parameters we have to consider, while selecting IGBT?

Last Answer : In IGBT datasheet, we have to focus on following parameters Collector to emitter voltage VCESCollector Current ICCollector Dissipation PCJunction Temperature Tj

For High frequency applications will you prefer MOSFET or IGBT? Why?

Description : For High frequency applications will you prefer MOSFET or IGBT? Why?

Last Answer : For High frequency applications, MOSFET is the right choice of the device.Because MOSFET has low switching losses compare to that of IGBT.General rule of thumb is for low-frequency applications ... For high frequency applications having frequency range of more than 200kHz, we have to use MOSFET

For High voltage applications will you prefer MOSFET or IGBT?

Description : For High voltage applications will you prefer MOSFET or IGBT?

Last Answer : For High voltage applications we have to use IGBT. Because MOSFETs are low voltage devices. ie, Their voltage rating is lesser than IGBT. General rule is MOSFETs are suitable for applications ... voltage less than 250V. The IGBTs are suitable for applications which has breakdown voltage upto 1000V.

A modern power semiconductor device IGBT is combines the characteristics of a) BJT and MOSFET b) FCT and GTO c) SCR and MOSFET d) SCR and BJT

Description : A modern power semiconductor device IGBT is combines the characteristics of a) BJT and MOSFET b) FCT and GTO c) SCR and MOSFET d) SCR and BJT

Last Answer : Ans: BJT and MOSFET

What is IGBT?

Description : What is IGBT (Insulated Gate Bipolar Transistor) ?

Last Answer : As compare to BJT and MOSFET, IGBT have very low on state voltage drop. IGBT require low driving power. IGBT have wide SOA (Safe Operating Area). The current conduction capability of ... very useful for improving dynamic performance and efficiency. IGBT also very good in reducing audible noise.

IGBT is used as

Last Answer : IGBT is used as High frequency switching device.

How IGBT convert DC into AC in solar inverter?

Last Answer : Igbt alone cant convert dc to ac. igbt half bridge or full bridge or three phase topology could be used to convert dc to ac. also igbt gates should be driven by microcontroller or pwm/spwm gate driving signals ... e4(-) and g4 c2e1 and c4e3 pins are AC output pins. its name is igbt inverter.

One of the major disadvantages of the Matrix form of organization structure is that– (A) it does not pinpoint product profit responsibility (B) it is not oriented towards results (C) there is possibility of disunity of command (D) it generates rivalry between line and staff members

Description : One of the major disadvantages of the Matrix form of organization structure is that– (A) it does not pinpoint product profit responsibility (B) it is not oriented towards results (C) there is possibility of disunity of command (D) it generates rivalry between line and staff members

Last Answer : Answer: there is possibility of disunity of command

What is a requirement for setting pricing objectives? A)The objectives should be short-term oriented. B)There should be only one pricing objective. C)An evaluation of competitors' prices should be made. D)The cost structure should be identified. E)The objectives should be explicitly state

Description : What is a requirement for setting pricing objectives? A)The objectives should be short-term oriented. B)There should be only one pricing objective. C)An evaluation of competitors' prices should be made. D)The cost structure should be identified. E)The objectives should be explicitly stated.

Last Answer : E)The objectives should be explicitly stated.

Superficially the term “object-oriented”, means that, we organize software as a (A) collection of continuous objects that incorporates both data structure and behaviour. (B) collection of discrete objects that incorporates both discrete structure and behaviour. (C) collection of discrete objects that incorporates both data structure and behaviour. (D) collection of objects that incorporates both discrete data structure and behaviour.

Description : Superficially the term object-oriented , means that, we organize software as a (A) collection of continuous objects that incorporates both data structure and behaviour. (B) collection of ... and behaviour. (D) collection of objects that incorporates both discrete data structure and behaviour.

Last Answer : (C) collection of discrete objects that incorporates both data structure and behaviour.

The database in which records are organised in a tree-like structure is (1) Network database (2) Hierarchical database (3) Relational database (4) Object-oriented database

Description : The database in which records are organised in a tree-like structure is (1) Network database (2) Hierarchical database (3) Relational database (4) Object-oriented database

Last Answer : Hierarchical database

Is one of the reasons the terrorist group Alleged uses to justify committing acts of terrorism against the US?

Description : Is one of the reasons the terrorist group Alleged uses to justify committing acts of terrorism against the US?

Last Answer : Need answer

Select the correct statement. (A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meter(B) A Venturimeter with a given gage difference discharges at a greater rate,when the flow is vertically downward through it, than when the flow is verticallyupward(C) For a given pressure difference, the discharge of gas is greater through aVenturimeter, when compressibility is taken into account, than when it isneglected(D) The overall pressure loss is the same in a given pipe line, whether aVenturimeter or a nozzle with the same throat dia is used

Description : Sele(A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meterct the correct statement. (B) A Venturimeter with a given gage difference discharges at a ... a given pipe line, whether a Venturimeter or a nozzle with the same throat dia is used

Last Answer : (A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meterct the correct statement

Select the correct statement. (A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meter(B) A Venturimeter with a given gage difference discharges at a greater rate,when the flow is vertically downward through it, than when the flow is verticallyupward(C) For a given pressure difference, the discharge of gas is greater through aVenturimeter, when compressibility is taken into account, than when it isneglected(D) The overall pressure loss is the same in a given pipe line, whether aVenturimeter or a nozzle with the same throat dia is used

Description : Select the correct statement. (A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meter (B) A Venturimeter with a given gage difference discharges at a ... a given pipe line, whether a Venturimeter or a nozzle with the same throat dia is used

Last Answer : (A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meter

Pick out the correct statement pertaining to Venturimeter. (A) A Venturimeter with a fixed pressure drop discharges more, when the flow is vertically downward, than when the flow is vertically upward (B) The co-efficient of contraction of a Venturimeter is always unity (C) For a fixed pressure drop, the discharge of a gas through a Venturimeter is greater, when compressibility is taken into account, than when it is neglected (D) None of these

Description : Pick out the correct statement pertaining to Venturimeter. (A) A Venturimeter with a fixed pressure drop discharges more, when the flow is vertically downward, than when the flow is vertically upward (B ... , when compressibility is taken into account, than when it is neglected (D) None of these

Last Answer : (D) None of these

Pick up the correct statement from the following: (A) The lines of sight while observing back sight and fore sight lie in the same horizontal plane (B) The staff readings are measurements made vertically downwards from a horizontal plane (C) The horizontal plane with reference to which staff readings are taken, coincides with the level surface through the telescope axis (D) All the above

Description : Pick up the correct statement from the following: (A) The lines of sight while observing back sight and fore sight lie in the same horizontal plane (B) The staff readings are measurements made ... readings are taken, coincides with the level surface through the telescope axis (D) All the above

Last Answer : (D) All the above

Pick up the correct statement from the following: (A) For the same feature, the photograph taken from the satellite vertically above the aircraft, the height displacement is lesser than the aerial photograph (B) The scale of the aerial photograph depends upon the scale of the topography (C) The feature at the principal point has no height displacement (D) All of the above

Description : Pick up the correct statement from the following: (A) For the same feature, the photograph taken from the satellite vertically above the aircraft, the height displacement is lesser than the aerial photograph ... C) The feature at the principal point has no height displacement (D) All of the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) Inclined borings are made for taking samples under existing structures (B) Inclined borings are occasionally used instead of vertical holes (C) The spacing of inclined borings is kept such that one bore hole is vertically above the bottom of an adjacent bore hole (D) All the above

Description : Pick up the correct statement from the following: (A) Inclined borings are made for taking samples under existing structures (B) Inclined borings are occasionally used instead of vertical holes (C) The ... bore hole is vertically above the bottom of an adjacent bore hole (D) All the above

Last Answer : Answer: Option D

‘Industrialisation brought a big change in social structure. Do you agree? Justify. -SST 10th

Description : ‘Industrialisation brought a big change in social structure. Do you agree? Justify. -SST 10th

Last Answer : Yes, I do agree with the statement. (i) Industrialisation forced the workers to migrate from urban areas to cities. (ii) It encouraged spirit of individualism among both men and women, and a freedom ... were a feature of the smaller rural communities. (iii) It widened the gap between rich and poor.