MIC2590B Dual-Slot PCI Hot Plug Controller - Micrel - #1

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MIC2590B Dual-Slot PCI Hot Plug Controller Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com September 2008 M9999-091808 General Description The MIC2590B is a power controller supporting power distribution requirements for Peripheral Component Interconnect (PCI) hot plug compliant systems incorporating the Intelligent Platform Management Interface (IPMI). The MIC2590B provides complete power control support for two PCI slots including the 3.3VAUX defined by the PCI 2.2 specification. Support for +5V, +3.3V, +12V and –12V supplies is provided including programmable constant-current inrush limiting, voltage supervision, programmable current limit, fault reporting and circuit breaker functions which provide fault isolation. The MIC2590B also incorporates a SMBus interface in which complete status and control of power within each slot is provided. Data such as voltage and current from each supply of each slot can be obtained for IPMI sensor records in addition to power status of each slot. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features • Supports two independent PCI 2.2 slots • SMBus interface for slot power control and status • +5V, +3.3V, +12V, –12V, +3.3VAUX supplies supported per PCI specification 2.2 • Programmable inrush current-limiting • Active current regulation controls inrush current • Electronic circuit breaker • Dual level fault detection for quick fault response without nuisance tripping • Thermal isolation between circuitry for slot A and slot B Applications • PCI hot-plug power distribution ___________________________________________________________________________________________________________ Ordering Information Part Number Standard Pb-Free 5V & 3V Fast-trip Threshold +12V & –12V Fast-trip Threshold Operating Temp. Range Package MIC2590B-2BTQ MIC2590B-2YTQ 100mV 1.5A/0.4A 0° to +70°C 48-Pin TQFP MIC2590B-5BTQ* MIC2590B-5YTQ* Disabled 1.5A/0.4A 0° to +70°C 48-Pin TQFP Note: * Contact factory for availability.