TEA1520P/N2,112

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PMIC - AC DC Converters, Offline Switchers

The TEA1520P/N2 112 application field and working principle belongs to the AC/DC converters and offline switchers in PMIC (Power Management Integrated Circuits). PMICs are capable of supplying power to most electronic components, such as processors and memory, driving them to their maximum potential. In addition, They support increased efficiency, reduce overall system power costs, improve electronic product reliability and extend lifetime.

The TEA1520P/N2 112 is a one-chip offline converter with a low start-up current, immunity from LC negative feedback loops, and over current and over voltage protection. Its working principle is a simple one: the power switch is connected to the same current that drives the buck controller and it is also fed with supply voltage. The power switch\'s output terminal has two current detect points, used as current measure inputs to the control loop. When the voltage across these points reaches a certain threshold, the device assumes a closed loop control. This two-point feedback enables the TEA1520P/N2 112 to maintain constant output voltage and current, independently of the switching frequency of the device.

The typical application field of the TEA1520P/N2 112 is for AC/DC adaptors, LED driver, LED bulbs, power sources, consumer audiences, and other consumer communication appliances. It has a wide input voltage range from 0.5V/2V/3.3V/4.4V to 24V and also provides a wide dimming range from 10V to 200kHz to dim high-performance LEDs. And it is based on the LURLIN, LAURIN and ELACON technologies, all of which contribute to its high system efficiency, fast time-to-market, and good cost over performance.

In terms of its features, the TEA1520P/N2 112 is a constant current LED Driver solution with a very low quiescent current of 600nA that provides up to 92 per cent efficiency. It features maximum eight decades of dimming range or bandwidth that can be dynamically programmed. It also features a variable duty cycle and exceptional ripple rejection ratio around 80dB, thus ensuring the stability of output power.

Other features of the TEA1520P/N2 112 AC/DC converter and offline switcher in PMIC include maximum working temperature up to 150°C, and current max of 1.2A. It has global safety and EMC compliance for with EMI Class B/C, CISPR Class B, and IEC61000-4-5/4-6. The TEA1520P/N2 112 is thus an ideal solution for AC/DC power supply designed to meet the most stringent demands and comply with the most recent regulations.

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