EID226AUnit 4During tum-on and turm-off of a power transistor, theVxcurrent-time and voltage-time relationships are asshown in the adjacent figure. Observe the waveforms50Aand calculate,V. = 372 V44) the OFF-state power dissipation (static);45) the switch ON-state power dissipation(static);46) the average switching loss for the OFFtransition (dynamic);47) the average switching loss for the ON25μs50ustransition (dynamic);Assume a switching frequency of 1kHz with Vx as specified in Appendix A.A SKT40 SCR with thermal impedance characteristic shown below, has rectangular power pulses applied to it.Consider the power pulses (right), the Zthjecharacteristic (below) and calculate,15048) the rise in junction temperature from time100instant 100ms to the time instant 500ms;5049) the rise in junction temperature from timeinstant 100ms to the time instant 700ms;0 100 200 300 400 500 600 700 800 900 t50) the rise in junction temperature from timeTime in msinstant 100ms to the time instant 900ms;PowerinWatt EID226ASKT 40Zn0.8Zin)p = Zmt + Zthiz0.6Zth)z [°C/W]0.4sin.rec.360°180°0,060,10120°0,090,13900,120,170.260°0,170,22300,250,350,300,3515°1010210-1102Transient thermal impedance vs. time

Unit 4 During tum-on and tum-off of a power transistor, the -Vx current-time and voltage-time relationships are as shown in the adjacent figure. Observe the waveforms 50A and calculate, v. - 372 V 44) the OFF-state power dissipation (static); 45) the switch ON-state power dissipation (static); 46) the average switching loss for the OFF transition (dynamic); 47) the average switching loss for the ON 25us 50 us transition (dynamic); Assume a switching frequency of 1kHz with Vx as specified in Appendix A.

Unit 4 During tum-on and tum-off of a power transistor, the -Vx current-time and voltage-time relationships are as shown in the adjacent figure. Observe the waveforms 50A and calculate, v. - 372 V 44) the OFF-state power dissipation (static); 45) the switch ON-state power dissipation (static); 46) the average switching loss for the OFF transition (dynamic); 47) the average switching loss for the ON 25us 50 us transition (dynamic); Assume a switching frequency of 1kHz with Vx as specified in Appendix A.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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