EMC1704-2中文资料Current And Power Measurement ICs Products数据手册Microchip规格书

描述 Description

The EMC1704 is a combination high-side current sensing device with precision temperature measurement. It measures the voltage developed across an external sense resistor to represent the high-side current of a battery or voltage regulator. It also measures the bus voltage and uses these measured values to present a proportional power calculation. The EMC1704 contains additional bidirectional peak detection circuitry to flag instantaneous current spikes with programmable time duration and magnitude threshold. Finally, the EMC1704 includes up to three (3) external diode channels and an internal temperature sensor for temperature measurement.

The temperature measurement includes advanced features such as Resistance Error Correction (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model including 45nm and 65nm processors), and automatic diode type detection.

Both current sensing and temperature monitoring include two tiers of protection: one that can be masked and causes the ALERT# pin to be asserted, and the other that cannot be masked and causes the THERM# pin to be asserted.

特性 Features

Features
• High-side current sensor
• Bi-directional current measurement
• Measures bus voltage
• 1% current measurement accuracy
• Integrated over 82ms to 2.6sec with 11-bit resolution
• 3V to 24V voltage bus voltage range
• Calculates proportional power
• Independent hardware set instantaneous current peak detector (EMC1704-2 only)
• Software controls to program time duration and magnitude threshold
• Power supply options
• Bus or separately powered for low voltage operation
• Wide temperature operating range: -40°C to +85°C
• Up to three external temperature monitors
• 1°C accuracy (20°C < TDIODE < 110°C) with 0.125°C resolution
• Ideality factor setting
• Support for 45nm and 65nm CPU diodes requiring the BJT/transistor model with beta compensation
• Determines external diode type and optimal settings
• Resistance Error Correction
• Anti-parallel diode support for additional diode options
• Internal temperature monitor
• ±1°C accuracy (-5°C < TA < 85°C)
• ALERT# and THERM# outputs for temperature, voltage, and out-of-current limit reporting
• I2C/SMBus 2.0 interface
• Pin-selectable SMBus Address
• Block Read and Write
• General Purpose I/O
• Available in a RoHS Compliant Package: 14-pin SOIC (EMC1704-1) or 16-pin 4mm x 4mm QFN (EMC1704-2)
Applications
• Notebook and Desktop Computers
• Industrial
• Power Management Systems
• Embedded Applications

应用 Application

·Notebook and Desktop Computers
·Industrial
·Power Management Systems
·Embedded Applications

简介

EMC1704-2属于集成电路（IC）的电源管理-专用。由制造生产的EMC1704-2电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。