描述 Description

The MIC2589 and MIC2595 are single-channel, negative voltage hot swap controllers designed to address the need for safe insertion and removal of circuit boards into \"live\" system backplanes, while using few external components. The MIC2589/MIC2589R and the MIC2595/MIC2595R are each available in 14-pin SOIC packaging and work in conjunction with an external N-Channel MOSFET for which the gate drive is controlled to provide inrush current limiting and output voltage slew-rate control. Overcurrent fault protection is also provided via a programmable overcurrent threshold and filter. Very fast fault response is provided to ensure that system power supplies maintain regulation even during output short circuits. These controllers offer two responses to a circuit breaker fault condition: the MIC2589 and MIC2595 latch the circuit breaker's output off when the overcurrent threshold interval is exceeded and the overcurrent filter times out while the MIC2589R and MIC2595R automatically attempt to restart at a fixed duty cycle after a current limit fault. A primary Power-Good signal and two secondary (delayed and staggered) Power-Good signals are provided to indicate that the output voltage is within its valid operating range. These signals can be used to perform an all-at-once or a sequenced enabling of one or more DC-DC power modules.

特性 Features

·Provides safe insertion and removal from live -48V (nominal) backplanes
·Operates from -19V to -80V
·Fast responding circuit breaker (<1μs) to short circuit conditions
·User-programmable overcurrent detector response time
·Electronic circuit breaker function:·Output latch OFF (MIC2589/MIC2595)
·Output auto-retry (MIC2589R/MIC2595R)

·Active current regulation to control inrush currents
·Programmable undervoltage and overvoltage lockouts (MIC2589/MIC2589R)
·Programmable UVLO hysteresis (MIC2595/MIC2595R)
·Staggered 'Power-Good' output signals provide load sequencing·Active-HIGH (-1)
·Active-LOW (-2)

簡介

MIC2595屬于集成電路（IC）的熱插拔控制器。由制造生產(chǎn)的MIC2595熱插拔控制器PMIC - 熱插拔控制器是能提供電路內(nèi)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。