The TOP258YN is a highly integrated offline switcher IC component designed for universal offline input range applications. It combines a 700V power MOSFET, high voltage start-up circuitry, PWM control IC, fault protection and other control circuitry into a single package. This device is suitable for applications such as consumer electronics, appliances, industrial power supplies, and standby power supplies.
One of the key features of the TOP258YN is its ability to provide accurate and constant output voltage regulation, which ensures power supply stability. It utilizes primary side control with a proprietary multi-mode operation technique, allowing it to operate in fixed frequency, frequency foldback, or frequency jittering modes, depending on the load conditions. This multi-mode control maximizes efficiency and minimizes the losses in the power supply.
Another important feature is the high level of integration that simplifies the design process and reduces overall component count. The TOP258YN includes features like cycle-by-cycle current limit, line undervoltage detection, over-temperature protection, overvoltage protection, and overload protection. These built-in protections ensure the reliability and safety of the power supply in various scenarios, protecting the IC and connected components from damage.
The TOP258YN operates with a wide input voltage range of 85VAC to 265VAC, allowing it to be used in universal input applications. It has a maximum output power capability of up to 62W
