REV. 0

ADP3414

–7–

Printed Circuit Board Layout Considerations

Use the following general guidelines when designing printed

circuit boards:

1. Trace out the high-current paths and use short, wide traces

to make these connections.

2. Connect the PGND pin of the ADP3414 as close as possible

to the source of the lower MOSFET.

3. The VCC bypass capacitor should be located as close as

possible to VCC and PGND pins.

IN

VCC

BST

DRVH

SW

DRVL

PGND

8

7

6

5

1

2

3

4

U2

ADP3414

NC

+

+

+

+

+

+

VID4

VCC

U1

ADP3160

VID3

VID2

VID1

VID0

COMP

FB

CT

REF

CS–

PWM1

PWM2

CS+

PWRGND

GND

IN

VCC

BST

DRVH

SW

DRVL

PGND

8

7

6

5

1

2

3

4

U3

ADP3414

NC

Q1

FDB7030L

Q3

FDB7030L

Q2

FDB8030L

L2

600nH

C11 C16 C17 C18 C19 C20 C27 C28

+

+

1.1V – 1.85V

53.4A

RTN

1200 F

8

OS–CON 2.5V

11m

ESR (EACH)

L1

600nH

Q4

FDB8030L

C5

1 F

C9

1 F

D1

MBR052LTI

R4

4m

R7

20

R5

2.4k

C26

4.7 F

Z1

ZMM5236BCT

Q5

2N3904

C22

1nF

C4

4.7 F

R6

10

C21

15nF

C6

1 F

C10

1 F

D2

MBR052LTI

FROM

CPU

1.1k

C1

150pF

1.4nF

11.5k

R1

1k

C2

100pF

34.0k

C15

C14

C13

C12

12V

270 F

4

OS–CON 16V

NC = NO CONNECT

C23

10 F

C24

10 F

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

Figure 3. 53.4 A Intel CPU Supply Circuit

Typical Application Circuits

The circuit in Figure 3 shows how two drivers can be com-

bined with the ADP3160 to form a total power conversion

computer. Figure 4 gives a similar application circuit for a

45 A AMD processor.