UCC38085PWR

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Power management integrated circuit (PMIC) is an active component used to control and monitor the power supply in various applications. This application field can be divided into three main categories: AC/DC converters, offline switchers, and battery management systems. Among them, AC/DC converters are widely used in laptops, mobile phones, and other electronic products as they provide excellent energy efficiency and reliable power delivery. The UCC38085PWR is a good example of this type of power device. In this article, we will discuss its application fields and working principle.

Application Field: UCC38085PWR is a single-channel high-efficiency non-synchronous buck regulator, which is very suitable for power supply design applications with small three-phase voltage and low power requirements, such as notebook computers, digital cameras and other electronic devices. It can also deliver power up to 25W and achieve a very high efficiency of up to 92%.

Working Principle: In most of the non-synchronous buck regulators, the power train consists of a high-side switch, a low-side switch and an inductor. As for this particular device, it utilizes a self-clocking architecture to realize the time control. This architecture allows for more flexibility as the control can be implemented with either a high input voltage or a low one. The device also has an adjustable current limit and overvoltage protection for extra safety. When the input voltage rises, the device is able to limit the output voltage to ensure a stable power supply. After the output voltage reaches the desired value, the feedback loop is able to keep it at that value while the input voltage fluctuates. Furthermore, a frequency jittering feature is included to reduce the electromagnetic interference.

The UCC38085PWR is an ideal choice for many power supply designs that require optimal performance and reliability. Its high-efficiency and excellent protection features make it a great fit for devices such as notebook computers and digital cameras. It packs very good features compared to its competitors and can offer the necessary performance in applications with small three-phase voltage and low power requirements.

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