SMH4044 - Summit Microelectronics

SMH4044 Compact PCI Hot-Swap Controller

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 MOSFETs, card power is ramped by two.

Features

! IPMI Implementation " IPMB Interface " Software Controlled Power-Up/-Down " Status Reporting: 5V, 3.3V, V1, V2, Healthy, Signal Valid, Reset " 2k-Bit E2PROM Memory ! Full Voltage Control for Hot Swap Applications " Detect, Monitors and Controls up to 4 independent supplies ! 14V High Side Driver Generation Allows use of Low On Resistance N-Channel FETs ! Under-Voltage Lockout SMH4044 Preliminary ! Electronic Circuit Breakers " Programmable Over-current Levels ! Card Insertion Detection ! Card Voltage Sequencing ! Flexible Reset Control " Low Voltage Resets " Host Reset Filtering " Soft Res.