MIC2593

Micrel

M9999-042204

2

April 2004

Typical Application

PCI Connector

VSTBYB

VSTBYA

VAUXA

5VINA

5VSENSEA

3VINA

3VSENSEA

5VINB

5VSENSEB

3VINB

3VSENSEB

5VGATEA

5VOUTA

3VGATEA

3VGATEB

3VOUTB

12VOUTB

12MVOUTB

VAUXB

3VOUTA

12VOUTA

12MVOUTA

GND

GND

A1

A2

A0

ONB

ONA

GPIB

GPIA

AUXENB

AUXENA

/INT

SCL

SDA

5VGATEB

5VOUTB

CFILTERA

CFILTERB

MIC2593

15

Ω

Si4420DY

Si4420DY

0.01

µF

0.01

µF

15

Ω

0.008

Ω

PCI Bus

3.3AUXA

375mA

3.3V, 7.6A

12V, 0.5A

–12V, 0.1A

5V, 5A

0.008

Ω

15

Ω

Si4420DY

0.01

µF

0.005

Ω

Si4420DY

C

GATE

0.01

µF

0.005

Ω

PCI Connector

PCI Bus

3.3AUXB

3.3V, 7.6A

5V, 5A

*

** Values determined by design requirements. See “Functional Description” section for detailed information.

#

MBRS140T3 or equivalent is recommended.

Bold lines indicate high current paths

4

2

11

26

6

7

8

9

12

13

14

16

10

19

31

30

29

28

25

24

23

21

22

–12V, 0.1A

20

12V, 0.5A

27

33

46

15

15

Ω

0.1

µF

0.1

µF

0.1

µF

0.1

µF

0.1

µF

0.1

µF

0.1

µF

0.1

µF

0.1

µF

/FAULTB

/FAULTA

1

/INT

SCL

SDA

SMBus I/O

Management

Controller

48

47

37

43

42

38

35

45

44

**C1

**C2

10k

× 3

10k

× 4

10k

× 2

SDA

SCL

/INT

SMBus

Base

Address

39

40

41

GPIB

100k

100k

GPIA

12VSLEWA

12VSLEWB

3

34

**C3

**C4

36

532

17

18

Power

Supply

+12V

–12V

+5.0V

+3.3V

VSTBY

(Clamp)

12VINA 12VINB

12MVINA 12MVINB

ONB

ONA

AUXENB

AUXENA

Hot Plug

Controller

/FAULTB

/FAULTA