IRU3018

7

Rev. 1.5

07/24/01

TYPICAL APPLICATION

Figure 3 - Typical application of IRU3018 for an on board DC-DC converter providing power for the Vcore, GTL+ &

Clock supply for the Deschutes and the next generation processor applications.

3018app1-1.6

C9

5V

12V

3.3V

Vout3

1.5V

Vout4

2.5V

PGood

Vout1

1.8V - 3.5V

C1

C3

L1

R5

R6

R7

R8

R19

R17

C15

Q4

C13

R15

R16

C16

L3

R14

R13

Q3

C14

C10

R12

C8

Q2

C19

C18

C17

C9

5V

R21

R22

5V

C2

U1

Gate3

Fb2

Gnd

Fb3

Fault/Rt

V5

VID3

VID2

VID4

VID1

VID0

PGnd

V12

Vin2

Vout2

LGate1

Phase1

5

13

6

16

2

15

18

12

19

21

10

22

8

23

1

14

11

UGate1 24

OCSet1

20

SS

9

3

4

Fb1

Vsen1

PGood 7

En 17

IRU3018