TOP257MN

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power management integrated circuits (PMICs) are outstandingly important components for the proper working of all kinds of electronics, since they not only provide power but also keep a tight control over it. TOP257MN is a device from such a class of PMICs, targeting designers who want to incorporate AC-DC or offline switchers in their application or any design that needs offline power conversion. It has become an integral part of commercial and industrial applications, especially when it comes to systems with stringent performance and power requirements .

The TOP257MN is composed of a control circuitry, a power switch and component to generate a high frequency of operation (usually 50 kHz), thus allowing it to achieve higher efficiency levels than with a regular bipolar switch.

In offline applications, such as 230V AC-12V DC, the TOP257MN can be put up to work without the need for any extra components, though the addition of chokes and capacitors will result in increased performance. Furthermore, with its various package options, it can accommodate up to a maximum of 5A load current. Additionally, with its integrated current-limiting, overload protection and frequency control, it finds use in a variety of high performance applications like motor control.

TOP257MN is part of the popular TOPSwitch Family of devices from Power Integrations. The device is based on the company’s advanced FluxLink technology, which enables it to achieve low parts count and superior AC-DC conversion efficiency relative to other designs, as well as providing excellent power regulation performance.

In terms of operation, TOP257MN works transferring energy from the source to the load. This is done by asynchronous PWMs and by using a high frequency transformer (100 kHz to 200 kHz). It also saves energy by providing relevant information to the control circuitry, resulting in a high efficiency performance. All the outputs are regulated independently from each other, regardless of a change in load, thereby allowing the device to protect itself from overload conditions.

TOP257MN is an excellent choice for offline switchers, as it has all the features necessary for ensuring power reliability and good power regulation performance. The overall efficiency can also be improved by incorporating external components for voltage feedback, noise suppression and current limiting. Its flux-based design helps keep application components at a minimum, thus making it a suitable alternative to linear AC / DC converters.

High performance, power economy and low cost make TOP257MN a strong contender in applications ranging from battery charging, PC power supplies, handheld tests and home appliances control systems to telecom, lighting and automotive accessories.

The specific data is subject to PDF, and the above content is for reference