SMH4044F データシートの表示（PDF） - Summit Microelectronics

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SMH4044F

Compact PCI Hot-Swap Controller With IPMI Support

Summit Microelectronics 

SMH4044

Preliminary

DESCRIPTION

The SMH4044 is a fully integrated hot swap controller that

provides complete power control for add-in cards ranging

in use for basic hot swap systems to high availability

systems. It detects proper insertion of the card and

senses valid supply voltage levels at the backplane.

Utilizing external low on-resistance N-channel MOS-

FETs, card power is ramped by two high-side driver

outputs that are slew-rate limited at 250V/s.

The internal 256 × 8 E2PROM can be used as configura-

tion memory for the individual card or as general purpose

memory.

Programming of configuration, control and calibration

values by the user can be simplified with the interface

adapter and Windows GUI software obtainable from

Summit Microelectronics.

The SMH4044 continuously monitors the host supplies,

the add-in card supplies and the add-in card currents. If

the SMH4044 detects the current is higher than the

programmed value it will shut down the MOSFETs and

issue a fault status to the host.

CompactPCI

Backplane

1.8V

5V

1.8V

5V

42

VCC

20 SGNL_VLD#

16 BD_SEL1#

15 BD_SEL2#

44

CBI_5

41

VGATE5

40

CARD_5V_MON

LOCAL_PCI_RST 29

6 MONITOR1

SMH4044

MONITOR 2 30

18 GND

19 HEALTHY#

HST_3V_MON

35

CBI_3 VGATE3

36

34

CARD_3V_MON

33

3.3V

Simplified Application Drawing — Triple Voltage Hot Swap (5V, 3.3V, 1.8V)

3.3V

2057 SAD-B

2

2057 1.x 8/16/01

SUMMIT MICROELECTRONICS, Inc.

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