ICE3AR4780VJZXKLA1

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The ICE3AR4780VJZXKLA1 is a PMIC (Power Management IC) designed for AC to DC converters and offline switchers. It provides a highly efficient and cost-effective solution for various power conversion applications. The IC allows designers to create cost effective solutions that are optimized to meet their specific need by adjusting voltage, current and efficiency.

Application Fields and Working Principle

The IC can be used to develop converters, switchers and rectifiers with an output power up to 300W. It is specially designed for applications such as adapter, charger, server, industrial control, and any other high current and high frequency applications. The IC has a wide input voltage range (85-265Vac) with an output voltage range from 24V to 36V.

The key to the ICE3AR4780VJZXKLA1\'s operation is its switching frequency of 150 kHz, which allows a high efficiency of 98.5%. The IC features active-clamp reset flyback topology, which provides a wide voltage adjusting range (±32%) and low-ripple output. The current mode control allows optimal utilization of the divided leakage inductance. This reduces output voltage overshoot by minimizing the output power losses at high-frequency current discontinuities. The integrated pulse-by-pulse current limitation reduces the output power in case of a short circuit or over load.

The IC includes the necessary functions for the application, such as an over voltage protection, a line under voltage detection, a power good flag, an overload protection and a thermal protection.

The ICE3AR4780VJZXKLA1 utilizes a synchronous rectifier which further improves the efficiency at low output power. The IC also features integrated active EMI filters which enables the design of a power supply system with a minimum number of external components.

Strengths

The output power of the IC can be optimized, which is an advantage for applications requiring high efficiency over a wide range of output power, such as adapters and chargers. The IC\'s adjustable output voltage, current and efficiency allows optimized designs, and ensures that the applications comply with all current certifications, such as CE and Fibret. The IC utilizes a synchronous rectifier for efficiency at low output power, and integrated active EMI filters for compliant designs.

Limitations

The ICE3AR4780VJZXKLA1 is limited to AC to DC conversion, and cannot be used for DC to DC or AC to AC applications. The IC also requires minimum external components, which can make the design process challenging. Finally, the IC is not suitable for applications with long input cable.

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