MIC2593 Dual-Slot PCI Hot Plug Controller - Micrel - #2

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Micrel, Inc. MIC2593 September 2008 2 M9999-092208 Typical Application PCI Connector VSTBYB VSTBYA VAUXA 5VINA 5VSENSEA 3VINA 3VSENSEA 5VINB 5VSENSEB 3VINB 3VSENSEB 5VGATEA 5VOUTA 3VGATEA 3VGATEB 3VOUTB 12VOUTB 12MVOUTB VAUXB 3VOUTA 12VOUTA 12MVOUTA GND CFILTERA A1 A2 A0 ONB ONA GPIB GPIA AUXENB AUXENA /INT SCL SDA 5VGATEB 5VOUTB CFILTERB MIC2593 *R12VGATEA Si4420DY Si4420DY CGATE 0.01ìF 0.01ìF RSENSE PCI Bus 3.3VAUXA 375mA 3.3V, 7.6A 12V, 0.5A –12V, 0.1A RSENSE *R12VGATEB 0.01ìF Si4420DY RSENSE Si4420DY CGATE 0.01ìF *R3VGATEB RSENSE PCI Connector PCI Bus 3.3VAUXB 3.3V, 7.6A 5V, 5A * Values for R5VGATE[A/B] and R3VGATE[A/B] may vary depending upon the CGS of the external MOSFETs. ** Values determined by design requirements. See “Functional Description” section for detailed information. # MBRS140T3 or equivalent is recommended. Bold lines indicate high current paths 4 11 26 6 7 8 9 12 13 14 16 10 19 31 30 29 28 25 24 23 21 22 20 –12V, 0.1A 27 12V, 0.5A 2 46 15 *R3VGATEA 0.1ìF 0.1ìF 0.1ìF 0.1ìF 0.1ìF 0.1ìF 0.1ìF 0.1ìF 0.1ìF /FAULTB /FAULTA 1 /INT SCL SDA SMBus I/O Management Controller 48 47 37 43 42 38 35 45 44 VSTBY **C1 **C2 VSTBY 10k × 3 10k × 4 10k × 2 SDA SCL /INT SMBus Base Address 39 40 41 GPIB 100k 100k GPIA VSTBY 12VSLEWA 12VSLEWB 3 34 **C3 **C4 36 VSTBY 5 32 17 18 Power Supply +12V 12V +5.0V +3.3V VSTBY 12VINA 12VINB 12MVINA 12MVINB ONB ONA AUXENB AUXENA Hot Plug Controller /FAULTB /FAULTA GND 33