Dual-Slot Power Controller Supports PCI Hot-Plug Standard

All system voltages required by PCI boards, including 12V, -12V, 3.3V and 5V primary supplies and a 3.3V auxiliary supply, are supported by the MIC2590 hot-swap power controller. The IC provides adjustable overcurrent timeout, circuit breaker fault protection, undervoltage lockout, output voltage monitoring, and output voltage slew rate control. And output current is regulated to ensure that inrush current never exceeds the programmed threshold. System reliability and performance are further increased by means of an on-chip 8-bit ADC with which designers can monitor the voltage and current of any PCI slot. Further, designersÕ ability to perform diagnostics is enhanced through the recording of the cause of supply faults in internal registers accessible via the SMBus interface. In 48-pin TQFPs, the MIC2590 costs $8.20 each/1,000. For more details, call Larry Mazer at MICREL SEMICONDUCTOR, San Jose, CA. (408) 474-1246.