BCD48BF160T240A00

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AC-DC and DC-DC power supplies can be found in countless applications ranging from gas igniters to microwave ovens to telecommunications equipment and flat panel TVs. The power supplies they use must handle a wide range of voltage and current levels. The BCD48BF160T240A00 is a high-power, high-efficiency AC-DC and DC-DC switching power supply evaluation board designed to meet or exceed the requirements of many of these applications.

The BCD48BF160T240A00 evaluation board features a two-switch forward converter with active power factor correction (PFC) based on the TS19HB1GMTT58 PFC controller and the BCD48BS60M0DB16 switch. The PFC section is designed using the forward topology whereas the main converter section is configured using the two-switch flyback topology. It is designed to accept an AC input voltage from 80V to 240V with an output voltage of 48VDC and a maximum output power of 160W.

The operating principle of the two-switch forward converter is based on two DC-to- DC converters connected in series, which allows to generate a required output power using two switches and an input voltage lower than the one specified at the output side. In series connection, the two switches are associated to two inductors. The power is transferred between the input and the output side of the converter in two phases characterized by different operating modes. When the switch close in the higher side of the inductor series connection the current increases. Then, the current energy stored in the inductor coils is transferred to the output through both switches simultaneously.

In the first operating mode, one of the switches is turned on while the other remains off. The current in the inductor flows to the output side of the converter. In the second mode, both switches are on and the current in the inductor is zero. Due to the zero current condition, the power stored in the inductor is transferred to the output side of the converter and the output voltage is regulated.

The BCD48BF160T240A00 offers a number of advantages for applications requiring high power conversion. It features a high power density design with the PFC section being configured as a current-mode two-switch forward converter, thus resulting in improved dynamic response. It also provides an improved output voltage regulation especially at light load, thanks to its PFC section.

The circuit is designed to operate at a switching frequency of 100 kHz, providing low output ripple voltage and a high efficiency of 90%. Additional features include short circuit, over temperature and over voltage protection and a comprehensive set of control, monitoring and protection functions for different operations such as burst mode, CCM and DCM. The BCD48BF160T240A00 evaluation board is available in an industrial-grade SMD package with a dimension of 45 mm x 115 mm.

The BCD48BF160T240A00 can be used in a variety of applications ranging from industrial equipment to consumer electronics. It is suitable for applications that require high efficiency, high power, low noise and long term reliability, including automotive, medical and telecom devices. Furthermore, the BCD48BF160T240A00 can be easily utilized in engineering laboratories, simplifying the development of power supplies.

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