MIC2342中文资料Dual -Slot PCI Express Hot-Plug Controller数据手册Microchip规格书

描述 Description

The MIC2342 is a dual-slot power controller supporting the power distribution requirements for Peripheral Component Interconnect Express (PCI Express®) Hot-Plug compliant systems. The MIC2342 provides complete power control support for two PCI Express slots, including the 3.3VAUX defined by the PCI Express standards. Support for the 12V, 3.3V, and 3.3VAUX supplies includes programmable gate voltage slew-rate control, voltage supervision, programmable current limit, and circuit breaker functions. These features provide comprehensive system protection and fault isolation. Additionally, in the event of an overcurrent fault on 3.3VAUX that \"trips\" the circuit breaker to cause the 3.3VAUX output to shut down, the MAIN outputs (3.3V and 12V) for the affected 3.3VAUX slot, A or B, will also be shut down. The MIC2341 controller provides truly independent output operation for MAIN and AUX.

特性 Features

• Supports two independent PCI Express slots
• MAIN & AUX outputs are inter-dependent during AUX overcurrent conditions
• 12V, 3.3V, and 3.3VAUX supplies supported per PCI Express Specification v1.0a, v.2.0
• Integrated Power MOSFETS for 3.3VAUX rails
• Standby Operation for Wake-on-LAN applications with low backfeed on Main +12V and +3.3V rails
• Programmable gate voltage slew-rate control
• Active current regulation controls inrush current
• High accuracy Primary and Secondary Circuit Breaker Current-limit Thresholds
• Dual-level, dual-speed fault detection for fast response without nuisance tripping
• User-programmable Primary Overcurrent Detector
• /PWRGD and Delayed /PWRGD (164 ms) Signal Outputs per slot
• Separate /FAULT output signals for MAIN and AUX rails for each slot
• Global Systems Power-is-Good Output
• Both slots thermally isolated
• Internally Debounced Plug-in Card Retention Switch Inputs per slot.

简介

MIC2342属于集成电路（IC）的热插拔控制器。由制造生产的MIC2342热插拔控制器PMIC - 热插拔控制器是能提供电路内保护和控制功能的半导体，可允许带电情况下在电路中插入或拔除其他组件。热插拔控制器可用于计算机网络和通用电源系统，主要根据输出电流、受控通道数量等特性，以及自动重试、故障超时和保护等特殊功能进行区分。