Maxim MAXQ3183电能测量前端方案

Maxim 公司的MAXQ3183是专用的电能测量前端IC,收集和计算多相电压,电流,功率,能量,以及多相负载的其它测量和电源质量参数.计算结果通过SPI总线由外接主机进行处理. MAXQ3183和三相/3线以及三线/4线兼容,单电源3.3V 工作,典型低功耗为35mW.主要用于三相多功能电表.本文介绍MAXQ3183主要特性,方框图, 简化时钟源, 能量计算的相位补偿框图, 表观和无功电能计算框图,以及典型应用电路图.

The MAXQ3183 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, power, energy, and many other metering and power-quality parameters of a polyphase load. The computed results can be retrieved by an external master through the on-chip serial peripheral interface (SPI™) bus. This bus is also used by the external master to configure the operation of the MAXQ3183 and monitor the status of operations.

The MAXQ3183 performs voltage and current measurements using an integrated ADC that can measure up to seven external differential signal pairs. An eighth differential signal pair is used to measure the die temperature.

An internal amplifier automatically adjusts the current channel gain to compensate for low-current channel-signal levels.

MAXQ3183主要特性:

♦ Compatible with 3-Phase/3-Wire, 3-Phase/4-Wire
..

查看全文