IRFS4410Z datasheet(5/9 Pages) UMW

5 / 9 page

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:

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.

ΔT = 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 = 2

DT/ [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

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

τJ

/Ri

Ci=

τi/Ri

Ri (°C/W)

τi (sec)

0.237

0.000178

0.413

0.003772

100

125

150

175

Starting TJ , Junction Temperature (°C)

100

150

TOP

Single Pulse

BOTTOM 1.0% Duty Cycle

ID = 58A

1.0E-06

1.0E-05

1.0E-04

1.0E-03

1.0E-02

1.0E-01

tav (sec)

0.1

100

0.05

Duty Cycle = Single Pulse

0.10

Allowed avalanche Current vs avalanche

pulsewidth, tav, assuming

ΔΤ j = 25°C and

Tstart = 150°C.

0.01

Allowed avalanche Current vs avalanche

pulsewidth, tav, assuming

Δ Tj = 150°C and

Tstart =25°C (Single Pulse)

UMW

IRFS4410Z

100 V N-Channel MOSFET

www.umw-ic.com

UTD Semiconductor Co.,Limited

IRFS4410Z Datasheet(PDF) 5 Page - Guangdong Youtai Semiconductor Co., Ltd.

IRFS4410Z Datasheet(HTML) 5 Page - Guangdong Youtai Semiconductor Co., Ltd.

Html Pages

1 2 3 4 5 6 7 8 9

Datasheet Download

Link URL