IRF7478PBF-1 查看數據表（PDF） - International Rectifier

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IRF7478PBF-1

SMPS MOSFET

International Rectifier 

IRF7478PbF-1

0.028

0.026

0.024

0.022

VGS = 4.5V

0.020

0.018

0.016

0

VGS = 10V

10 20 30 40 50 60

ID , Drain Current (A)

Fig 12. On-Resistance Vs. Drain Current

Current Regulator

Same Type as D.U.T.

50KΩ

12V

.2μF

.3μF

VGS

3mA

D.U.T.

+

-VDS

VGS

QGS

VG

IG

ID

Current Sampling Resistors

QG

QGD

Charge

Fig 14a&b. Basic Gate Charge Test Circuit

and Waveform

0.04

0.03

0.02

ID = 7.0A

0.01

0.0

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0

VGS, Gate -to -Source Voltage (V)

Fig 13. On-Resistance Vs. Gate Voltage

400

ID

TOP

1.9A

3.4A

BOTTOM 4.2A

300

200

V(BR)DSS

tp

I AS

VDS

L

RG

20V

tp

D.U.T

IAS

0.01Ω

15V

DRIVER

+

-

VDD

A

100

0

25

50

75

100

125

150

Starting TJ , Junction Temperature ( °C)

Fig 15a&b. Unclamped Inductive Test circuit

and Waveforms

Fig 15c. Maximum Avalanche Energy

Vs. Drain Current

6

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November 20, 2013

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