MIC2587中文资料Positive High Voltage Hot-Swap Controller数据手册Microchip规格书

描述 Description

The MIC2587 and MIC2587R are single-channel positive voltage hot swap controllers designed to provide safe insertion and removal of boards for systems that require live (always-powered) backplanes. These devices use few external components and act as controllers for external N-channel power MOSFET devices to provide inrush current control and output voltage slew rate control. Overcurrent fault protection is provided via programmable analog foldback current limit circuitry equipped with a programmable overcurrent filter. These protection circuits combine to limit the power dissipation of the external MOSFET to insure that the MOSFET is in its SOA during fault conditions. The MIC2587 provides a circuit breaker function that latches the output MOSFET off if the load current exceeds the current limit threshold for the duration of the programmable timer. The MIC2587R provides a circuit breaker function that automatically attempts to restart power after a load current fault at a low duty cycle to prevent the MOSFET from overheating. Each device provides either an active-HIGH (-1BM) or an active-LOW (-2BM) \"Power-is-Good\" signal to indicate that the output load voltage is within tolerance.

特性 Features

• MIC2587: Pin-for-pin functional equivalent to the LT1641
• Operates from +10V to +80V with 100V ABS MAX operation
• Industrial temperature specifications at VCC = +24V and VCC = +48V
• Programmable current limit with analog foldback
• Active current regulation minimizes inrush current
• Output latch off (MIC2587) or
• Output auto-retry (MIC2587R)
• Fast responding circuit breaker (

简介

MIC2587属于集成电路（IC）的热插拔控制器。由制造生产的MIC2587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。