IRF7821TR datasheet(6/10 Pages) IRF

No de pièce	IRF7821TR

Description	High Frequency Point-of-Load Synchronous Buck Converter for Applications in Networking & Computing Systems.

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Fabricant	IRF [International Rectifier]

Site Internet	http://www.irf.com

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IRF7821

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Fig 13b. Unclamped Inductive Waveforms

Fig 13a. Unclamped Inductive Test Circuit

tp

V(BR)DSS

IAS

Fig 13c. Maximum Avalanche Energy

Vs. Drain Current

RG

IAS

0.01

Ω

tp

D.U.T

L

VDS

+

- VDD

DRIVER

A

15V

20V

VGS

25

50

75

100

125

150

Starting TJ, Junction Temperature (°C)

0

20

40

60

80

100

I D

TOP

4.5A

8.0A

BOTTOM 10A

Fig 14a. Switching Time Test Circuit

Fig 14b. Switching Time Waveforms

V

GS

V

DS

90%

10%

t

d(on)

t

d(off)

t

f

t

r

V

GS

Pulse Width < 1µs

Duty Factor < 0.1%

V

DD

V

DS

L

D

D.U.T

Fig 12. On-Resistance Vs. Gate Voltage

2.0

4.0

6.0

8.0

10.0

VGS, Gate-to-Source Voltage (V)

0

5

10

15

20

25

30

TJ = 25°C

TJ = 125°C

ID = 13A

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