TEA1755T/1,518

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TEA1755T/1,518 is a unique component of PMIC - AC DC Converters, Offline Switchers. It is an advanced, versatile, high-performance IC capable of providing both controlling power and intelligence to high power offline AC-DC switching regulators. The IC is a fixed frequency current-mode controller with active output voltage feed forward and adaptive zero-volt singularity canceller that can work with an external high-side switch and a low side sensing.

This component has a wide application range of up to 400W and a voltage range from 85Vac to 265Vac, as well as a variety of protection functions, making it suitable for a wide variety of AC-DC applications. The component is highly efficient, eco-friendly, and is capable of delivering higher power density with low switching and conduction losses associated with the current-mode protection circuit.

The component is also capable of providing extra power management functions, such as output voltage measurement, temperature control, and adjusting the operating frequency. It is also equipped with a low operation power, high frequency switching capability, inrush current protection, short circuit protection, open loop protection, thermal overload protection, and several other safety features. In addition, the component features a wide range of protection features, such as overload prevention, latch-off protection and output voltage feedback for load protection.

The working principle of the TEA1755T/1,518 component is simple and efficient. The controller utilizes a current mode modulation concept and a high frequency switch with both current and voltage sensing inputs, as well as a voltage feedback circuit. It also includes a temperature sensing circuit and output voltage sensing circuit. The main components of the IC are the current sense resistor, the main current sense transformer, the FET driver, the high frequency switch, a PWM generator and an oscillator. All these components are integrated onto a single IC package.

The IC uses an internal low-side power MOSFET switch, which is driven by an active output voltage feed forward circuit. This circuit senses the output voltage in order to accurately control the power delivered to the load. The current mode modulation concept is used to achieve high efficiency, higher power density and low switching and conduction losses. The controller also features a safety timer and adjustable UVLO, which limit the output-current and protect the system in case of over load condition. In addition, the IC provides an overload prevention/short circuit protection which will shutdown the output in case of over temperature or short circuits.

In conclusion, the TEA1755T/1,518 is a highly advanced and versatile PMIC - AC DC Converters, Offline Switchers component capable of providing both controlling power and intelligence to high power offline AC-DC switching regulators. It is highly efficient and eco-friendly, and is capable of delivering higher power density with low switching and conduction losses associated with the current-mode protection circuit. The component has high frequency switching capability, inrush current protection, short circuit protection, open loop protection, thermal overload protection, and several other safety features, making it perfect for a wide range of AC-DC applications.

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