PT4854N

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DC-DC converters are an important part of power electronics, and the PT4854N is an example of an efficient and flexible voltage boosting integrated circuit. It can be applied in a variety of situations to convert a low input voltage to a pre-determined higher output voltage.

The PT4854N is an integrated switching converter with an active power factor correction (PFC) Front End. It has an advanced digital control and a high-efficiency power stage that helps reach higher efficiency goals. The synchronous N-channel MOSFET used in the power stage allows for high-efficiency operation and the advanced control loop regulates the output current across the entire input voltage range, thus minimizing power dissipation.

The PT4854N can be used in a variety of applications, including the Power Factor Correction (PFC) for, AC/DC switching power supplies, DC/DC converter, and in many more applications. It is designed to reduce the average input current during the output voltage adjustment period in order to maintain high power factor in the entire load range and low output voltage ripple at low loads.

The PT4854N operates by switching its MOSFET half-bridge drivers at a frequency determined by the applied PWM signal, and its inductor/capacitor filters the ripple on the output voltage. The duty cycle of the PWM signal is proportional to the average input current, and is calculated by the internal monitoring circuit. The internal monitoring circuit also monitors the output voltage and maintains the output voltage at the desired setting. The PT4854N also provides protection features such as short-circuit protection, overtemperature protection and soft-start functionality for the PFC pre-regulator.

The PT4854N is a great choice for efficient and reliable conversion of low input voltages. Its constant output voltage, adjustable low voltage cut-off, soft-start and short-circuit protection functions ensure coverage of a variety of applications and efficient operation. It is an ideal choice for applications where the output voltage needs to be regulated reliably over a wide input range.

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