Common Terms For Power Management Chips

Common Terms for Power Management Chips

20 common terms for power management chips and their explanations:

PMIC (Power Management Integrated Circuit)：Power management integrated circuit, a chip that integrates multiple power management functions, is commonly used to provide stable power to various electronic devices.

LDO (Low Dropout Regulator)：Low dropout linear regulator, a linear regulator capable of having a small dropout between the input and output voltages, is suitable for low-power applications.

Buck Converter：Step-down converters, which convert higher input voltages into lower output voltages with high efficiency, are commonly used in mobile devices and embedded systems.

Boost Converter：Boost converters, which convert lower input voltages to higher output voltages, are typically used in applications where increased voltage is required, such as LED drivers.

Buck-Boost Converter：Buck-boost converters can provide stable output when the input voltage is higher or lower than the output voltage, and are widely used in unstable power supply scenarios.

DC-DC Converter：DC-DC converters, which convert one DC voltage to another, common types include buck, boost, and buck-boost converters.

AC-DC Converter：AC-DC converters, used to convert AC power (such as household power) to DC power, are widely used in power adapters and battery chargers.

Power Sequencing：Power supply sequence refers to ensuring that each voltage rail is powered on and off in the correct order in multiple power supply voltage rails to ensure that the system starts and shuts down normally.

Overcurrent Protection (OCP)：Over-current protection, when the current exceeds the maximum safe value of the chip or circuit design, the protection circuit will break or limit the current to prevent damage.

Overvoltage Protection (OVP)：Overvoltage protection, when the input voltage exceeds a set safety threshold, the protection circuit will cut off the power supply or limit the voltage to avoid damage to the device.

Undervoltage Lockout (UVLO)：Undervoltage locking, when the supply voltage is lower than a certain set value, the system will automatically stop working to prevent unstable power supply conditions from affecting the normal operation of the equipment.

Thermal Shutdown：Thermal shutdown, when the temperature of the chip or circuit exceeds a safe threshold, the chip automatically shuts down or limits the output to avoid damage due to overheating.

Efficiency：efficiency, the efficiency of the power converter to convert input power into output power. High efficiency means less energy waste, often manifested as lower heat generation.

Ripple：Ripple refers to high-frequency fluctuations in the power supply output, usually caused by switching power supplies (such as DC-DC converters), and excessive ripple may affect system performance.

Quiescent Current (Iq)：Quiescent current, in the absence of a load, the current consumed by the power management chip. Low quiescent current is important for extending battery life.

Soft Start：Soft start, by gradually increasing the output voltage or current, avoid the large surge current generated by the system when the system is turned on, and reduce the damage to the system.

Load Regulation：Load regulation refers to the stability of the power supply output voltage when the load changes. Good load regulation means that the voltage fluctuates less when the load changes.

Line Regulation：Input regulation refers to the stability of the output voltage of the power supply when the input voltage changes. Good input regulation means less voltage fluctuations.

Power Good (PG)：The power supply normal indication indicates that the power supply voltage is within the preset normal range, which is often used for power health monitoring of MCU and other systems.

Battery Charger IC：Battery charging management chip, specially used for recharging batteries, manages voltage, current regulation, charging status monitoring and other functions during the charging process.

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