BP71003-NFB64LF

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Part Status:	Active

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Throughout the years, a variety of applications have emerged that require a reliable yet affordable power solution for medium to high power needs regulated loads. The BP71003-NFB64LF adaptor is one of the most popular models suitable for these needs. This device, which is rated for output of 64W, is often used in applications such as vehicle charging systems, home audio equipment and medical applications. In order to understand the functionality of the BP71003-NFB64LF, it is necessary to first understand its working principle. This device is a buck-boost converter, which means it can operate with input voltages between 45V and 54V. When the input voltage is higher than the output voltage, the device works as a buck converter, and when the input voltage is lower than the output voltage, it works as a boost converter. The BP71003-NFB64LF is a single-stage Buck-Boost constant-voltage DC-DC adaptor that employs an efficient multi-stage architecture. It consists of an active power stage, an output-voltage regulation system, and a control circuit. The active power stage is essentially a multi-pin power module consisting of two MOSFETs in the buck-boost topology. It uses a full-bridge rectifier to boost the incoming voltage to the voltage required by the load. The output-voltage regulation system of the BP71003-NFB64LF consists of an optoisolator, a voltage reference circuit, and a comparator circuit. The optoisolator provides galvanic isolation between the output voltage control input and the power stage. A voltage reference circuit is provided to ensure that the output voltage remains within the desired range. The comparator circuit is used to compare the optoisolator feedback with the voltage reference signal. When the output voltage goes below or above the target range, the comparator sends signals to the control circuit. The control circuit of the BP71003-NFB64LF is responsible for controlling the output voltage. It monitors the output voltage as well as the feedback signal and adjusts the current flow throughout the power stages accordingly. The control circuit also provides over-current protection, which prevents the device from delivering more current than what is needed by the load. The BP71003-NFB64LF is an excellent solution for applications that require medium to high power with variable input voltages. It is efficient, reliable, and affordable, and it is a great choice for regulated loads.

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