Energy Metering
Energy Metering PMICs focus on energy metering and monitoring. Using built-in sensors and digital logic, they measure power consumption, voltage, current, and other parameters in real time, enabling dynamic adjustments to improve energy efficiency. They play a critical role in modern electronic devices, supporting overvoltage, undervoltage, overcurrent, and overtemperature protection mechanisms to prevent hardware damage and extend battery life.
1. What are the Core Functions of Energy Metering PMICs?
Energy Metering and Monitoring: Accurately monitors voltage rails (such as the 0.9V low-voltage rail) using an ADC (analog-to-digital converter) and comparators, enabling undervoltage and overvoltage trip points and generating power status reports to optimize energy consumption.
Efficient Conversion and Regulation: Dynamically adjusts voltage levels using DC-DC converters (such as buck and boost) and low-dropout regulators (LDOs) to provide low-noise, regulated outputs suitable for sensitive circuit modules.
Intelligent Optimization: Supporting I2C, SPI, or PMBus communication protocols, these devices allow software-configurable power supply parameters, implement dynamic voltage and frequency scaling (DVFS), and control sleep modes, reducing standby power consumption by over 35%.
2. What are the Application Scenarios of Energy Metering PMICs?
Consumer Electronics: Manages power supply for multiple modules, such as the CPU and camera, in smartphones and tablets, using AI algorithms to predict load demand and extend battery life.
Industrial and Automotive Electronics: Used in automotive powertrain controllers (such as ADAS systems) and industrial automation equipment, it maintains efficient operation in extreme operating conditions (-40°C to 125°C) and reduces energy consumption through silicon carbide technology.
Data Center and IoT: Provides integrated power management for server memory modules (such as DDR5) and IoT devices, reducing external component count, PCB area, and cost.
Energy Metering PMICs, through their highly integrated and intelligent design, address the complexity of multi-power systems, becoming an indispensable “invisible energy manager” in electronic devices.