TOP265EG

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In present technology, power management IC has become more and more important. From AC/DC converters to offline switch, they all have the same target: providing clean power to the electrical system. Among them, TOP265EG is a high performance and cost-efficient AC/DC converter. It is carefully designed to meet most tough power supply requirements. It is not only suitable for off-line power supplies but also for other controlled power applications.

The TOP265EG is a low power, monolithic, integrated circuit. It combines a high frequency power factor corrector, a high voltage power switch, and a current mode PWM for secondary side synchronous rectification control. It can operate with an input voltage from 7V to 265V DC and deliver an output power up to 3.2W without an additional heatsink. It also supports 100kHz and 300kHz frequency operations which improves efficiency and reduces EMI noise.

The TOP265EG works with high integrated features and can be easily implemented in single-ended primary and two-ended primary power supplies. In order to reduce the power or cool down, the chip can sense an external resistor to reduce the switching frequency or enable the skip-cycle mode. The package of the chip is adapted to the applications and the special optimized pin-out may provide the best PCB layout.

The working principle of TOP265EG is simple. It consists of an internal power factor corrector, a lowside power switch, and an on-board power transformer. When an input voltage is applied, the internal power factor corrector will turn on the switch, start the transformation and regulation of voltage. The voltage outputted depends on the regulation, and wherein it created. Once the process has finished, the regulated output voltage is obtained. The lowside current mode PWM will control the synchronous rectification and provide the regulation of output.

The TOP265EG application field covers off-line power conversion and controlled power applications for small power supplies. Since the TOP265EG provides the highest cost efficiency, it enables the applications such as communication devices, industrial control, household appliances, mobile power and so on. The applications has low complexity and high reliability which is widely adopted in small, green and energy-saving applications.

Therefore, TOP265EG is a high-efficiency and cost-effective AC/DC converter for low power, low complexity applications. With its wide input voltage range, integrated features and improved EMI noise, TOP265EG is an ideal solution for many applications.

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