PBA15F-3R3-E

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AC/DC power converters are devices that convert power from one form to the other, usually from AC to DC. PBA15F-3R3-E is a type of converter specifically designed for converting AC power into a DC output, at a rated current of 3.3A. The converter features wide input voltage range, high efficiency, low power consumption, and fast transient response time.

Application Field

PBA15F-3R3-E converter is suitable for various industrial applications, such as office equipment, industrial systems, and automotive electronics, due to its wide input voltage range, high efficiency, low power consumption, and fast transient response time. Additionally, the converter is designed to meet MIL-STD-704F, making it suitable for defence and aerospace applications.

Working Principle

At its core, the PBA15F-3R3-E converter employs a buck topology, where a switching regulator is used to regulate the output voltage. There are a few sub-topologies available, such as the flyback and forward converter, that can be used in this application. The buck topology is used in the PBA15F-3R3-E converter, due to its high efficiency, wide-range input voltage and fast transient response.

The buck topology works by feeding the AC input voltage through a rectifier and filter circuit, which converts the AC to DC. This DC voltage is then passed through the main switching regulator circuit, where it is regulated to the required DC output voltage. The switching regulator has two main components - a switching transistor, and an inductor.The switching transistor is used to rapidly switch the current at high frequency, producing a pulsating current. This pulsating current is then passed through a coil, which induces a magnetic field. This magnetic field is then used to store the energy as a voltage. By controlling the on and off time of the switching transistor, the coil can be made to release the energy either as AC or DC voltage.

The PBA15F-3R3-E converter also employs an integrated dual mode control loop, which ensures the accuracy of the output voltage. This control loop uses an active current sensing method, to measure the output current, and adjust the switching frequency with the feedback. Additionally, the control mode offers protection features, such as over-current and over-voltage protection, short-circuit protection, over-temperature protection, and overload protection.

The PBA15F-3R3-E converter is a useful device that has wide applications in the modern world. Its wide input voltage range, high efficiency, low power consumption, and fast transient response make it suitable for various industrial applications, as well as defence and aerospace applications. The converter employs a buck topology, along with an integrated dual mode control loop, to ensure accurate output voltage, and offer protection features.

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