Microchip MIC2595-2YM

Контроллер с горячей заменой, секвенсор1Зафиксированная неисправность

Overview

The MIC2589 and MIC2595-1YM 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 MIC2595-1YM 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.

Features

Applications

• Safe board insertion and extraction
• Industrial computers and servers
• Redundant-array-of-independent-disk (RAID) storage
• Other forms of communications infrastructure
• Board or blade insertion into live backplanes
• Backplane
• Loads
• Distributed power systems
• Redundant negative voltage supplies
• Central office switching systems