11

HIP6003 DC-DC Converter Application Circuit

The figure below shows an application circuit of a DC-DC

Converter for an Intel Pentium Pro microprocessor. Detailed

information on the circuit, including a complete Bill-of-

Materials and circuit board description, can be found in

Application Note AN9664. See Intersil’s home page on the

web: www.intersil.com or Intersil AnswerFAX (321-724-

7800) document # 99664.

6

5

HIP6003

VSEN

RT/OVP

FB

COMP

VID0

VID1

VID2

VID3

SS

PGOOD

D/A

GND

C1-C4

L2

C5-C12

0.1

µF

2x 1

µF

0.1

µF

0.1

µF

1000pF 90.9K

3.01K

4x 330

µF

8x 1000

µF

UGATE

OCSET

PHASE

BOOT

SPARE

750K

CR1

Q1

1.1K

1000pF

CR2

Q2

VR1

1.5

µH

2N6394

5.1V

R1

R2

R3

R4

C17

C16

R5

C15

C14

C19-C20

C21

R7

C22

R8

C24

4148

U1

1

µF

C18

R6

10

20K

0.1

µF

F1

15A

R9

10K

R10

14

1

10

13

12

11

9

7

8

15

16

2

3

4

SPARE

VID0

VID1

VID2

VID3

PWRGD

+12V

+5V

L1

OR

+12V

SPARE

OSC

+

-

+

-

Component Selection Notes:

C5-C12 - 8 each 1000

µF 6.3W VDC, Sanyo MV-GX or Equivalent

C1-C4 - 4 each 330

µF 25W VDC, Sanyo MV-GX or Equivalent

L1 - Core: Micrometals T60-52; Each Winding: 14 Turns of 17AWG

L2 - Core: Micrometals T44-52; Winding: 7 Turns of 18AWG

CR1 - 1N4148 or Equivalent

CR2 - 25A, 35V Schottky, Motorola MBR2535CTL or Equivalent

Q1 - Intersil MOSFET; RFP70N03

FIGURE 12. PENTIUM PRO DC-DC CONVERTER

15K

33pF

7

µH

C13

MONITOR AND

PROTECTION

HIP6003