What are the causes of failure of mosfet in an high
frequency application?
Answers were Sorted based on User's Feedback
Answer / baikunth
Basically any semiconductor devices fails due to two
reasons- 1. over temperature or thermal runaway.
2. over voltage or breakdown of the bond.
3. high speed switching which causes less recovery time.
but in case of high frequency application the third one is
most important.
Is This Answer Correct ? | 12 Yes | 1 No |
Answer / ganesh kamath
MOSFETS can withstand simultaneous application of high current and voltage without undergoing destructive. Power MOSFETs can also be paralleled easily because the forward voltage drop increases with increasing temperature, ensuring an even distribution of current among all components.
However, at high breakdown voltages (>200V) the on-state voltage drop of the power MOSFET becomes higher than that of a similar size bipolar device with similar voltage rating. This makes it more attractive to use the bipolar power transistor at the expense of worse high frequency performance.
Is This Answer Correct ? | 1 Yes | 2 No |
need previous placement test papers of infosys and soctronics
GET-2013 exam is going to be held on which day(tentatively).
What is the forbidden energy gap? How does it occur? Define what is its magnitude for ge and si?
Explain what are the universal logic gates?
why the input resistance of an op-amp is high whereas it's output resistance is low?
Explain what is a truth table?
1mv pure sinesoidal input given to high current carrying op amp.is it possible to get 10kv output
oracle 1st round What are the different types of joins? Explain normalization with examples. What cursor type do you use to retrieve multiple recordsets? Diffrence between a "where" clause and a "having" clause What is the difference between "procedure" and "function"? How will you copy the structure of a table without copying the data? How to find out the database name from SQL*PLUS command prompt? Tadeoffs with having indexes Talk about "Exception Handling" in PL/SQL? What is the diference between "NULL in C" and "NULL in Oracle?" What is Pro*C? What is OCI? Give some examples of Analytical functions. What is the difference between "translate" and "replace"? What is DYNAMIC SQL method 4? How to remove duplicate records from a table? What is the use of ANALYZing the tables? How to run SQL script from a Unix Shell? What is a "transaction"? Why are they necessary? Explain Normalizationa dn Denormalization with examples. When do you get contraint violtaion? What are the types of constraints? How to convert RAW datatype into TEXT? Difference - Primary Key and Aggregate Key How functional dependency is related to database table design? What is a "trigger"? Why can a "group by" or "order by" clause be expensive to process? What are "HINTS"? What is "index covering" of a query? What is a VIEW? How to get script for a view? What are the Large object types suported by Oracle? What is SQL*Loader? Difference between "VARCHAR" and "VARCHAR2" datatypes. What is the difference among "dropping a table", "truncating a table" and "deleting all records" from a table. Difference between "ORACLE" and "MICROSOFT ACCESS" databases. How to create a database link ? PL/SQL interview questions... Normalize many to many relationships Difference - Equijoin and union What is TEMP table space in Oracle, what is rollback segment How do we find row chaining? Pattern matching operators Features in oracle 9i and 10g Why truncating table is faster than delete copy commit syntax Convert Zulu time zone to US Eastern time zone Difference - union and union all Difference - Group by, Order by clause Which Ranking functions are available? Difference - Decode, NVL, NVL2 Tradeoffs of using partitioned tables How can we call stored procedure in SQL query What are the restrictions on calling PL/SQL from SQL Why EXISTS is preferable to distinct Give 2 examples of avoiding unnecessary parsing.
why we use zener diode in switching action
in which way ece students useful to software jobs?
2 Answers Keane India Ltd, Kiscol,
what is BIAS current/ voltage?
What is the difference between transducer and transponder?