ispPAC-POWR1220AT8集成了在系统可编程逻辑和在系统可编程模拟功能,是通用的电源监视器,顺序和余量控制器,它提供12个单独的模拟输入通道,用来监视多达12个电源测试点. POWR1220AT8提供和IPMC标准的命令接口,能把板上的DC/DC转换器转换成精密的数控电源.本文介绍了ispPAC-POWR1220AT8主要特性,方框图,以及应用方框图, 评估板外形图,采用ispPAC-POWR1220AT8的12V热插拔控制器参考设计电路图.
ispPAC-POWR1220AT8典型应用:The Power Manager II POWR1220AT8 provides a standard command interface to the IPMC while performing FRU specifIC payload power management functions using the on-Chip CPLD. The POWR1220AT8 also converts all on board DC-DC converters into aCCurate digitally controlLED supplies.
图1.ispPAC-POWR1220AT8方框图
图2.ispPAC-POWR1220AT8应用方框图
图3.ispPAC-POWR1220AT8提高DC/DC转换器精度的应用方框图
The PAC-POWR1220AT8 evaluation board allows the designer to quickly configure and evaluate the ispPAC-POWR1220AT8 device on a fully assembled printed-circuit board. The four-layer board supports a 100-PIN TQFP package, pads for user I/O, a JTAG programming cable connector, and a connector for the device’s I2C interface. JTAG programming signals CAN be generated by using an ispDOWNLOAD® programming cable connected between the evaluation board and a PC. Both analog and digital features of the ispPACPOWR1220AT8 device can be eaSILy configured using PAC-Designer® SOFtware.
The PAC-POWR1220AT8 evaluation board is available in a Development Kit that includes:
PAC-POWR1220AT8 Evaluation Board
ispDOWNLOAD Cable
AC Adapter (International plugs)
User Documentation
图4.ispPAC-POWR1220AT8评估板外形图
采用ispPAC-POWR1220AT8的12V热插拔控制器参考设计
A hot swap controller is used to limit the inrush current when a circuit board is plugged into a powered backplane.
In addition, a hot swap controller may offer some or all of the following features: over-current protection (eleCTRonic circuit breaker), over-voltage protection, and under-voltage protection. Hot swap controllers are also required to isolate the board from the backplane which is useful in troubleshooting, maintenance, and upgrade activities. The power-down request may come from the backplane (remote) or an on-board switch (manual).
This document describes how a Lattice Power Manager II ispPAC®-POWR1220AT8 can be used to implement the functions required for 12V hot swap applications. This reference design is targeted to operate on the Power Manager Hercules Development Kit (PAC-POWR1220AT8-HS-EVN – Standard or PAC-POWR1220AT8-HA-EVN –Advanced).
本文关键字：技术 热插拔 嵌入式系统-技术，单片机-工控设备 - 嵌入式系统-技术
