Electronic Components Datasheet Search |
|
IXBOD1-12 Datasheet(PDF) 6 Page - IXYS Corporation |
|
IXBOD1-12 Datasheet(HTML) 6 Page - IXYS Corporation |
6 / 8 page H - 6 © 2000 IXYS All rights reserved Application Protection of thyristors against overvoltages in forward direction. V D i BOD Thyristor V BO (TVJ) = VBO, 25°C [1+KT(TVJ - 25°C)] a. The maximum junction temperature shall be calculated for a module IXBOD 1 -30R at an ambient temperature T a = 60 °C, an exponentially decaying current I TM = 40A, a pulsewidth tp = 2 µs, an operating frequency f = 50 Hz and natural convection. From the diagram Fig. 6 the energy per pulse is obtained: E p1 = 6 x 10 -3 Ws For a module IXBOD1-30R the number of single IXBOD elements is: n = 3 At natural air cooling the thermal resistance junction to ambient amounts to (Fig.8): R thJA = 20K/W and the unknown temperature can be calculated as: T VJmax1 = T a + n • f • Ep • RthJA + Kp • Ep T VJmax1 = 60 + 18 + 4.2 = 82.2°C b. If following these steady-state conditions an overload for 1 minute occurs with I TM= 60 A and a pulse-width tp = 4 µs at the same operating frequency f = 50 Hz, then the resulting maximum junction temperature is calculating as follows: T VJmax2 = TVJmax1 + (Ep2-Ep1) • n • f •ZthJA(t) + Kp • (Ep2-Ep1) The diagrams Fig. 11 and Fig. 8 show E p2= 14x10 -3 Ws Z thJA(t = 1min) = 12K/W From what follows: T VJmax2 = 82.2 + 14.4 + 5,6 = 102.2 °C which is allowed because the maximum admissible junction temperature T VJM = 125 °C. Calculation example |
Similar Part No. - IXBOD1-12 |
|
Similar Description - IXBOD1-12 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |