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Power Management Chip of DC charging pile wireless module
Main component
Concept:
Power Management Chip (PMIC), that is, power management chip, is a specific purpose of the integrated circuit, its main function is the main system power management, including voltage conversion, current control, power rail management, power monitoring and so on. In the DC charging pile wireless module, the PMIC is responsible for managing and controlling the power supply of the wireless module to ensure the stability and efficiency of the power supply.
Function:
Voltage conversion: The PMIC is capable of converting the input voltage to the appropriate voltage level required by the wireless module, including boost, buck, and lift conversion.
Current control: Control and limit the flow of current to various parts of the wireless module to protect the components from overcurrent damage.
Power rail management: Manage multiple power rails to provide stable power control for different parts of the wireless module.
Power monitoring: Overvoltage, undervoltage, overcurrent, overheat and short circuit protection is provided to prevent damage to the wireless module.
Energy conversion and efficiency optimization: Through efficient power conversion technology, reduce energy loss and improve energy efficiency.
Remote control and monitoring: Remote control and monitoring of power status is allowed through communication interfaces such as I2C, SPI, PMBus, etc.
Working Principle:
Input voltage regulation: The first step of PMIC is to regulate the input voltage to ensure that the power supply system of the wireless module can work normally under different input voltage conditions. This step is usually achieved through a voltage regulator circuit, such as a linear regulator or a switching regulator.
DC-DC conversion: Another important function of the power management IC chip is to convert the input voltage to the output voltage required by the wireless module. This step is usually achieved using DC-DC converters, and different types of DC-DC converters can be selected according to the different output voltages, such as buck converters, boost converters, step-up converters, and so on.
Power selection and control: The PMIC can select and distribute power to various parts of the wireless module from multiple power supplies (e.g., external DC power supplies, batteries, USB power supplies, etc.), such as providing multiple power supplies of different voltages, and is responsible for charging the internal battery.
Communication and coordination: Due to the need to coordinate with the main system, the PMIC needs a signal interface to communicate with the main system, generally using series interfaces such as I²C or SPI, and some PMIC with simple functions will directly connect to the MCU GPIO with an independent signal.
Sum up
Through the above functions and working principles, PMIC plays a crucial role in the wireless module of DC charging pile, ensuring the stable operation and power efficiency of the wireless module.
DC CHARGING PIlE SERIES
DC charging pile is an efficient charging facility for electric vehicles, which uses direct current (DC) to directly charge the vehicle battery, significantly reducing the charging time. Compared with traditional AC charging piles, DC charging piles are able to provide higher power output and can usually charge an EV to 80% of its capacity in 30 minutes, providing users with a convenient charging experience.
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