MIC2590B Dual-Slot PCI Hot Plug Controller General Description Features The MIC2590B is a power controller supporting power Supports two independent PCI 2.2 slots distribution requirements for Peripheral Component Inter- SMBus interface for slot power control and status connect (PCI) hot plug compliant systems incorporating +5V, +3.3V, +12V, 12V, +3.3VAUX supplies supported the Intelligent Platform Management Interface (IPMI). The per PCI specification 2.2 MIC2590B provides complete power control support for Programmable inrush current-limiting two PCI slots including the 3.3V defined by the PCI 2.2 AUX specification. Active current regulation controls inrush current Support for +5V, +3.3V, +12V and 12V supplies is Electronic circuit breaker provided including programmable constant-current inrush Dual level fault detection for quick fault response limiting, voltage supervision, programmable current limit, without nuisance tripping fault reporting and circuit breaker functions which provide Thermal isolation between circuitry for slot A and slot B fault isolation. The MIC2590B also incorporates a SMBus interface in Applications which complete status and control of power within each slot is provided. Data such as voltage and current from PCI hot-plug power distribution 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 Micrels web site at: www.micrel.com. Ordering Information Part Number 5V & 3V Fast-trip +12V & 12V Fast-trip Operating Package Threshold Threshold Temp. Range Standard Pb-Free MIC2590B-2BTQ MIC2590B-2YTQ 100mV 1.5A/0.4A 0 to +70C 48-Pin TQFP MIC2590B-5BTQ* MIC2590B-5YTQ* Disabled 1.5A/0.4A 0 to +70C 48-Pin TQFP Note: * Contact factory for availability. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC2590B Typical Application Power +12V Supply 12V +5.0V +3.3V 1A Schotty Diode PCI (Clamp) Connector VSTBY 12VIN1 12VIN2 12MVIN1 12MVIN2 PCI Bus VSTBY1 VAUXA 3.3VAUXA VSTBY2 5VINA R SENSE 5VSENA 12SLEWA R 12SLEWB 5VGATEA 5VGATEA 5VOUTA 5V, 5A C GATE CFILTERA 3VINA R SENSE IREF 3VSENSEA 20k CFILTERB C R GATE 3VGATEA 1% 3VGATEA 3.3V, 7.6A 3VOUTA 12V, 0.5A 12VOUTA 12V, 0.1A 12MVOUTA 5VINB GND MIC2590B 4.7F 4.7F R SENSE PCI Bus 5VSENSEB ONA/ONB ONA/ONB R 2 5VGATEB 5VGATEB AUXENA/AUXENB AUXENA/AUXENB 2 5VOUTB 5V, 5A /FAULTA, /FAULTB /FAULTA, /FAULTB 2 C GATE 3VINB A0 Hot-Plug R SENSE Controller 3VSENSEB A1 C GATE A2 R 3VGATEB 3VGATEB /INT 3.3V, 7.6A 3VOUTB SCL 12V, 0.5A 12VOUTB SDA 12V, 0.1A 12MVOUTB 3.3VAUXB VAUXB 4.7F 4.7F SMBus I/O SDA SDA Bus Switch Management SCL SCL A B Controller /OE /INT /INT M9999-091808 September 2008 2