UC2823AQG3

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Power Management Integrated Circuits (PMICs) are a vital component of many modern electronic systems, providing precision control and reliable operation in a variety of applications. The UC2823AQG3 is a buck/boost DC-DC switching controller from Microchip, designed to dramatically reduce component count and offer supremely efficient power management in a single-chip solution. In this article, we will discuss the working principle of the UC2823AQG3, as well as its applications and key features.

Overview of the UC2823AQG3

The UC2823AQG3 is a synchronous buck/boost DC-DC switching controller designed for high-performance, space-efficient power management. This single-chip solution is the ideal choice for a variety of applications that require stable and accurate power control, such as intermediate buses (e.g. 12V, 5V, etc.) within automotive, consumer, industrial and communications systems. It is also perfect for multi-cell Li-ion/Li-polymer battery-powered systems and voltage cascading, as well as powering circuits from nonstandard sources such as AC adapters.

UC2823AQG3 Features

The UC2823AQG3 has a number of features that make it an ideal choice for many applications. It has a wide input voltage range (up to 65V for the adjusted version, and up to 30V for the non-adjusted version), a 1MHz switching frequency and a programmable feedback frequency (up to 15MHz). It also offers a variety of safety functions and can be configured to combine a buck and a boost controller into one, making it perfect for a number of multi-cell applications. Additionally, the UC2823AQG3 offers fault protection, providing cycle-skipping, current, voltage and temperature protection.

UC2823AQG3 Working Principle

The UC2823AQG3 operates on two working modes, buck and boost. In buck mode, the chip constantly monitors the output voltage and adjusts the switching frequency accordingly to maintain a desired voltage. In boost mode, the chip monitors the input voltage, adjusting the switching frequency to provide a desired voltage at the output. Depending on the application, the UC2823AQG3 can be configured to provide either one of these modes, or both, working in conjunction.

UC2823AQG3 Applications

Due to its wide input voltage range, programmable feedback frequency and fault protection features, the UC2823AQG3 is ideal for a wide range of applications. It is commonly used in automotive applications such as charging and power conditioning of lead-acid, NiMH and lithium-ion batteries, and powering controllers and related circuits. Additionally, it is perfect for powering non-standard sources such as AC adapters and can also be used in industrial and telecommunications applications.

Conclusion

The UC2823AQG3 is a synchronous buck/boost DC-DC switching controller from Microchip, designed to dramatically reduce component count and offer supremely efficient power management in a single-chip solution. It offers a wide input voltage range and programmable feedback frequency, making it ideal for a variety of automotive, consumer, industrial and communications systems. With its fault protection features, it provides reliable and safe operation in any application.

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