TNY278GN-TL

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PMICs, or power management integrated circuits, are an important component in many electronic designs. They are used to regulate the power in applications, from battery-powered devices to automotive systems. AC/DC converters, offline switchers, and DC/DC converters are common power management ICs that are used in a wide variety of applications.

TNY278GN-TL is a new product from Power Integrations, providing a low cost, low power AC/DC converter solution for a broad range of applications. It is a single-ended, flyback converter with integrated rectifier, controller, and power transistors. This AC/DC converter can deliver outputs up to 24W with a universal input voltage range of 90-264V AC, and has a built-in LED indicator and fast over current protection as well.

The TNY278GN-TL is designed to deliver reliable, high efficiency conversions and is ideal for powering LED lighting, home appliances, and other low power applications. It is a compact device, measuring only 3.3×3.3mm, and is offered in a SOT23-5L package. The device is compliant with safety regulations including IEC/EN 60950-1, IEC/EN 61000-3-2 Class C and UL 60950-1.

TNY278GN-TL can operate at a wide range of frequencies, from 47KHz to 200KHz, allowing for flexibility in design. It also features a low cost, fixed 3.3V output for driving small loads, and an adjustable output for larger power applications. In addition, the device includes built-in feed forward compensation and soft-start circuitry, allowing for good transient behavior over a wide load range.

In terms of working principle, TNY278GN-TL functions by using a MOSFET-controlled diode (MOSFET-CDA) in a flyback converter configuration. This allows for improved efficiency and power density levels compared to previous designs, while being cost-effective. When the operating frequency is low, the MOSFET-CDA works as a coupled inductor, providing high power density and lower component count. When the frequency is increased, it acts as an integrated diode, providing higher efficiency and improved EMI performance. The device also features a built-in soft-start circuit, which limits the inrush current during startup, and provides better protecton against wire absorption events.

Overall, TNY278GN-TL is a cost-effective, low power AC/DC converter solution that is designed for applications such as LED lighting, home appliances, and other low power designs. It is a highly integrated, low component count device that offers good performance and meets global safety regulations. The device's flyback converter design and MOSFET-CDA technology enable high efficiency and power density levels while providing inherently low EMI emissions.

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