TOP222G-TL

TOP222G-TL is an offline switcher belonging to the AC DC Converters of PMIC. It is an integrated and monolithic PWM oscillator and a on/off controller which have an internal isolated feedback and produce high quality outputs. The typical applications that require the features of the TOP222G-TL mainly include switching-mode power supplies, such as fan motors, TVs, monitors, IT and networking products, entertainment systems, external storage and medical applications. This integrated circuit can be found in many modern home and office appliances, making it ideal for commercial use.

The working principle of TOP222G-TL is straightforward. At its core, is a PWM oscillator which produces a pulse width modulated waveform that is transmitted to an output switch comprised of two isolated pins. The input voltage is filtered through a bridge rectifier and then regulated at a set voltage using a feedback path. The output is monitored and compared to the set voltage and the width of the pulse is adjusted as needed to achieve the desired output voltage. The full circuit operates under a synchronous rectification topology, allowing for high efficiency and low quiescent current.

TOP222G-TL is equipped with many features that make it suitable for a variety of applications. It has a wide input voltage range of up to 65V, high voltage isolation of up to 1000V, and a low quiescent current of 0.11mA. It also features high efficiency switching of up to 98.7%, and can be output control in either PWM current mode or peak current mode. The device also provides overvoltage protection, thermal protection, and undervoltage protection for added safety. Furthermore, it has a shutdown pin for graceful system shutdown.

TOP222G-TL is an excellent low cost, high efficiency, offline switcher from the AC DC Converters family of PMIC. Its wide input voltage range, high voltage isolation, and low quiescent current make it suitable for a variety of applications. From home and office equipment to fan motors, TVs, and medical applications, it can be an ideal choice for designers looking for a reliable and cost effective solution.