Electronic Components Datasheet Search
Selected language     English  ▼


IRFB4321PBF Datasheet(PDF) 5 Page - International Rectifier

Part No. IRFB4321PBF
Description  HEXFET Power MOSFET
Download  8 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  IRF [International Rectifier]
Homepage  http://www.irf.com
Logo 

   
 5 page
background image
IRFB4321PbF
www.irf.com
5
Fig 13. Maximum Effective Transient Thermal Impedance, Junction-to-Case
Fig 14. Typical Avalanche Current vs.Pulsewidth
Fig 15. Maximum Avalanche Energy vs. Temperature
Notes on Repetitive Avalanche Curves , Figures 14, 15:
(For further info, see AN-1005 at www.irf.com)
1. Avalanche failures assumption:
Purely a thermal phenomenon and failure occurs at a temperature far in
excess of Tjmax. This is validated for every part type.
2. Safe operation in Avalanche is allowed as long asTjmax is not exceeded.
3. Equation below based on circuit and waveforms shown in Figures 16a, 16b.
4. PD (ave) = Average power dissipation per single avalanche pulse.
5. BV = Rated breakdown voltage (1.3 factor accounts for voltage increase
during avalanche).
6. Iav = Allowable avalanche current.
7.
∆T = Allowable rise in junction temperature, not to exceed Tjmax (assumed as
25°C in Figure 14, 15).
tav = Average time in avalanche.
D = Duty cycle in avalanche = tav ·f
ZthJC(D, tav) = Transient thermal resistance, see Figures 13)
PD (ave) = 1/2 ( 1.3·BV·Iav) = DT/ ZthJC
Iav = 2DT/ [1.3·BV·Zth]
EAS (AR) = PD (ave)·tav
1E-006
1E-005
0.0001
0.001
0.01
0.1
t1 , Rectangular Pulse Duration (sec)
0.001
0.01
0.1
1
0.20
0.10
D = 0.50
0.02
0.01
0.05
SINGLE PULSE
( THERMAL RESPONSE )
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
Ri (°C/W)
τι (sec)
0.085239 0.000052
0.18817
0.00098
0.176912 0.008365
τ
J
τ
J
τ
1
τ
1
τ
2
τ
2
τ
3
τ
3
R
1
R
1
R
2
R
2
R
3
R
3
τ
τ
C
Ci=
τi/Ri
Ci=
τi/Ri
25
50
75
100
125
150
175
Starting TJ , Junction Temperature (°C)
0
20
40
60
80
100
120
TOP
Single Pulse
BOTTOM 1% Duty Cycle
ID = 50A
1.0E-06
1.0E-05
1.0E-04
1.0E-03
1.0E-02
1.0E-01
tav (sec)
0.1
1
10
100
0.05
Duty Cycle = Single Pulse
0.10
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming
∆Τ j = 25°C and
Tstart = 150°C.
0.01
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming
∆Tj = 150°C and
Tstart =25°C (Single Pulse)




Html Pages

1  2  3  4  5  6  7  8 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
IRFZ34VPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRLZ4SHEXFET POWER MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRFC240HEXFET Power MOSFET Die in Wafer Form 1 International Rectifier
IRF3704ZCSPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRFP150VPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRL1004SPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRF730ASPBFHEXFET Power MOSFET SMPS MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRF7832ZPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRL2505SPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRL3502SPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier

Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com 2003 - 2017    


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl