Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
V-I Characteristics
In the normal mode of operation of an IGBT a positive voltage is applied to the collector relative to emitter. When the gate is at zero potential with respect to E no collector current IC flows for collector voltage VCE below the breakdown level VB. When VC < VB and the gate voltage exceeds the threshold value VGT, electrons pass into the N- region ( base of the P-N-p transistor).
Figure V- I characteristics of IGBT
These electrons lower the potential of the N region biasing the P+ - N_ junction thereby causing holes to be injected from the P+ substrate into the N_ epi-layer region. The excess electrons and holes modulate the conductivity N+ region which dramatically reduces the on resistance of the device. With zero gate bins the forward characteristic of IGBT shows very low current (<1bA) where it breaks up sharply to much larger current levels with only a slight increase in voltage. The VI characteristics of IGBT is shown in figure it show the relation between collector current tc and collector to emitter voltage VCE for different values of gate to emitter voltage VGE.
The junction J1 blocks reverse voltage. An IGBT without N+ buffer layer has higher reverse blocking capability. Therefore an IGBT required for blocking high reverse voltage does not have N+ buffer layer. The reverse blocking voltage is shown as the VRM on the VI characteristics. The junction J2 blocks the forward voltage when the IGBT is off.
Draw the state diagram for the state machine described by Table 7.5 in the text. Note, the table shows the transition to the next state S* from the current state S for the next set
Program counter holds the address of also the first byte of the next instruction to be fetched for implementation or the address of the next byte of a multi byte instruction, which
WHAT IS MIDPOINT BIASING OF A TRANSISTOR?
can I get matlab code for out of band radiation reduction ofdm system
Hexadecimal to Binary Conversion Conversion from hexadecimal to binary is the reverse of this process. Express each hexadecimal digit in four bit binary equivalent
Q. What is Polyphase Induction Machine Performance? Some of the important steady-state performance characteristics of a polyphase induction motor include the variation of curre
Q. What do you mean by Source Encoding? After the quantization of message samples, the digital system will then code each quantized sample into a sequence of binary digits (bit
(a) What are the elements of Flexible Manufacturing Systems? (b) What are the basic types of workstations typically found in an FMS. Describe them briefly?
Q. What happens when a negative bias is applied to the gate of a FET? The result of applying a negative bias to the gate is to reach the saturation level at a lower level of V
Q. Show Typical electric power distribution system? In central business districts of large urban areas, the primary distribution circuits consist of underground cables which ar
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd