用于电子式电能表的电源管理供电系统

Power Supply System Applied to Electronic Watt-hour Meter Power Management

针对目前嵌入式产品电源管理复杂的特点,介绍一款用于电子式电能表的电源管理供电系统,采用高集成度的电源管理芯片,充分阐述该芯片在ARM嵌入式管理平台中的应用。该系统包括主供电回路、弱电主供电回路、电源监控电路、掉电存数供电电路、电池供电电路、低功耗唤醒电路以及主控芯片低功耗管理电路,其中,重点讲解如何实现各电路的管理,同时讲述在各种工作模式下如何灵活可靠地实现电源的有序管理和有效输出。

Aiming at the complex power management of embedded products, the paper introduced a power supply management system for electronic watt-hour meter, which used high integration chip. It expounded the application of this chip in the embedded ARM management platform. This system includes main power supply circuit, low voltage main power supply circuit, power circuit monitoring with several power supply circuit, power supply circuit for important parameters storage, battery power supply circuit, control circuit and low power consumption awakening, and low power management circuit in the control chip. The paper emphasized on how to realize the management of the circuits, at the same time, it represented how to manage the power supply flexiblly under various working modes.