描述 Description

The MIC2580 is a hot-swap controller that provides for safe and orderly insertion and removal of PCI based adapter cards from a PCI hot-plug compliant system backplane or CompactPCI? system.The MIC2580 incorporates a circuit breaker function that protects all four supplies (+12V, +5V, +3.3V, and -12V) upon an overcurrent fault condition. Current foldback limiting prevents large transient currents caused by plugging adapter cards into live backplanes, such as in a CompactPCI system.A programmable slew-rate control limits high inrush currents to all loads that occur when power is applied to large capacitive loads.Voltage supervisory functions for all four power supplies are provided by “power good” (/PWRGD) and “overcurrent fault” (/FAULT) diagnostic outputs. Power good and overcurrent fault include deglitch filters to prevent nuisance tripping.Power good is active when all four supplies are within tolerance. Fault (/FAULT) goes active upon overcurrent or overtemperature conditions. The on-off control input (/ON) is used to cycle power to the adapter card.

特性 Features

? PCI hot-plug and CompactPCI? hot-swap support
? +12V, +5V, +3.3V, and -12V power supply control
? Circuit breaker function to protect system
? Programmable slew rate control for all supplies
? Foldback current-limiting
? +5V and +3.3V programmable current-limit thresholds
? Undervoltage and overcurrent diagnostic outputs
? Deglitch filters on diagnostic fault outputs
? Integrated +12V and -12V MOSFET switches
? Integrated high-side drivers for 3.3V and 5V external switches
? Precharge supply for CompatPCI? I/O termination

簡介

MIC2580A屬于集成電路（IC）的熱插拔控制器。由制造生產的MIC2580A熱插拔控制器PMIC - 熱插拔控制器是能提供電路內保護和控制功能的半導體，可允許帶電情況下在電路中插入或拔除其他組件。熱插拔控制器可用于計算機網(wǎng)絡和通用電源系統(tǒng)，主要根據(jù)輸出電流、受控通道數(shù)量等特性，以及自動重試、故障超時和保護等特殊功能進行區(qū)分。