SUMMIT Microelectronics: Product Summary: SMH4044 

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SMH4044 Block Diagram - Summit Microelectronics, Inc.

SMH4044 BLOCK DIAGRAM (PDF pg 3)


SMH4044 48-Pin TQFP PINOUT (PDF pg 4)
PCI Industrial Computer Manufacturers Group

SMH4044

CompactPCI™ High Availability Hot-Swap Voltage Controller with IPMI Support

FEATURES

IPMB and I2C bus Interface Compatible

Detects, Monitors and Controls up to 4 independent supplies

Software Controlled Power-Up/-Down

Status Reporting: 5V, 3.3V, V1, V2, Healthy, Signal Valid, Reset

2k-Bit Non-Volatile E2PROM Memory

14V High Side Driver Generation Allows use of Low On Resistance N-Channel FETs

Under-Voltage Lockout

Electronic Circuit Breakers

Programmable Over-current Levels

Card Insertion Detection and Supply Sequencing

Flexible Reset Control


APPLICATIONS

High Availability Compact PCITM Hot Swap Cards

IPMI Servers requiring Environmental Reporting

Compact PCI™ Telecom Line Cards


INTRODUCTION

The SMH4044 is a fully integrated hot swap controller that provides complete power control for add-in cards ranging in use from basic hot swap to high availability systems. It detects proper insertion of the card and senses valid supply voltage levels at the backplane. Utilizing external low onresistance N-channel MOSFETs, card power is ramped by two high-side driver outputs that are slew-rate limited at 250V/s.

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.

An internal 256 • 8 E2PROM can be used as configuration 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.


SMH4044 Ordering Info, Summit Microelectronics, Inc.

 

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SUMMIT Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. SUMMIT Microelectronics, Inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained herein reflect representative operating parameters, and may vary depending upon a user's specific application. While the information in this publication has been carefully checked, SUMMIT Microelectronics, Inc. shall not be liable for any damages arising as a result of any error or omission. SUMMIT Microelectronics, Inc. does not recommend the use of any of its products in life support or aviation applications where the failure or malfunction of the product can reasonably be expected to cause any failure of either system or to significantly affect their safety or effectiveness. Products are not authorized for use in such applications unless SUMMIT Microelectronics, Inc. receives written assurances, to its satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of SUMMIT Microelectronics, Inc. is adequately protected under the circumstances.

Revision 1.1 - This document supersedes all previous versions.

I2C is a trademark of Philips Corporation.
PICMG and AdvancedTCA are trademarks of the PCI Industrial Computers Manufacturers Group (PICMG).
 

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