Electronic Components Datasheet Search
Selected language     English  ▼


IRF4905LPBF Datasheet(PDF) 7 Page - International Rectifier

Part No. IRF4905LPBF
Description  HEXFET Power MOSFET
Download  11 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  IRF [International Rectifier]
Homepage  http://www.irf.com
Logo 

 
 7 page
background image
IRF4905S/L
www.irf.com
7
Fig 15. Typical Avalanche Current Vs.Pulsewidth
Fig 16. Maximum Avalanche Energy
Vs. Temperature
Notes on Repetitive Avalanche Curves , Figures 15, 16:
(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 12a, 12b.
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 15, 16).
tav = Average time in avalanche.
D = Duty cycle in avalanche = tav ·f
ZthJC(D, tav) = Transient thermal resistance, see figure 11)
PD (ave) = 1/2 ( 1.3·BV·Iav) = DT/ ZthJC
Iav = 2DT/ [1.3·BV·Zth]
EAS (AR) = PD (ave)·tav
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
1000
0.05
Duty Cycle = Single Pulse
0.10
Allowed avalanche Current vs
avalanche
pulsewidth,
tav
assuming
∆Tj = 25°C due to
avalanche losses. Note: In no
case should Tj be allowed to
exceed Tjmax
0.01
25
50
75
100
125
150
Starting TJ , Junction Temperature (°C)
0
40
80
120
160
TOP
Single Pulse
BOTTOM 1% Duty Cycle
ID = -42A




Html Pages

1  2  3  4  5  6  7  8  9  10  11 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
IRFZ34VPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRF7210PBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRFR210PBFHEXFET 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
IRF8010PBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRFS4321PBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRF3704ZCSPBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRFB4321PBFHEXFET Power MOSFET 1 2 3 4 5 MoreInternational Rectifier
IRL520NSHEXFET 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