Microchip MCP39F501单相电源监测解决方案

Microchip公司的MCP39F501是高度集成的单相电源监测IC,集成了两路delta sigma ADC,16位计算引擎,EEPROM和灵活的2线接口,集成的低漂移基准电压具有10 ppm/℃ 温度系数,SINAD 94.5dB,4000:1动态范围的电源监测精度达到0.1%, 主要用在AC/DC转换器的输入电源实时测量和智能分布电源.本文介绍了MCP39F501主要特性,框图,典型应用电路以及评估板主要特性,电路图和材料清单.
The MCP39F501 is a highly integrated, single-phase power-monitoring IC designed for real-time measurement of input power for AC/DC power supplies, power distribution units and industrial applications. It includes dual-channel delta sigma ADCs, a 16-bit calculation engine, EEPROM and a flexible 2-wire interface. An integrated low-drift voltage reference with 10 ppm/°C in addition to 94.5 dB of SINAD performance on each measurement channel allows for better than 0.1% accurate designs across a 4000:1 dynamic range.
MCP39F501主要特性:
• Power Monitoring Accuracy capable of 0.1% error across 4000:1 dynamic range
• Fast Calibration Routines
• Programmable Event Notifications such as overcurrent and voltage sag, surge protection
• 512 bytes User-accessible EEPROM through page read/write commands
• Non-volatile On-chip Memory, no external memory required
• Built-in calculations on fast 16-bit processing core
- Active, Reactive and Apparent Power
- True RMS Current, RMS Voltage
- Line Frequency, Power Factor
• Two-Wire Serial Protocol using a 2-wire Universal Asynchronous Receiver/Transmitter (UART) interface supporting multiple devices on a single bus
• Low-Drift Internal Voltage Reference, 10 ppm/℃ typical
• 28-lead 5x5 QFN package
• Extended Temperature Range -40℃ to +125℃
MCP39F501应用:
• Real-time Measurement of Input Power for AC/DC supplies
• Intelligent Power Distribution Units

图1. MCP39F501框图

图2. MCP39F501典型应用:单相两线应用电路图
MCP39F501评估板
The MCP39F501 Power Monitor Dem...