Figure 5: Efficiency vs. output load current of a MAX15258 CL 800 W reference design. (Source: Analog Devices)
However, inherent limitations can hinder their efficacy in specific circumstances. To overcome the limitations of active clamp forward converters, a new generation of power supply technologies has emerged, offering enhanced efficiency, increased power density, and simplified control mechanisms. In the telecom industry, these novel solutions pave the way for more advanced and optimized power supplies.
two controllers, and the SYNC pins are connected to assure clock synchronization for the phase interleaving scheme with coordinated phases. The MAX15258 is a low-frequency boost converter. This reduces the converters' primary source of power loss—switching losses. Because each converter operates in its low-loss area at low frequency, this offers high output power at a high equivalent total frequency. This makes it the go-to device for converting -48 V DC . Operating with a stable duty cycle, it obtains a high output power with
extremely high efficiency. Figure 5 shows the efficiency curves of a coupled inductor-based MAX15258 800 W reference design for various combinations of V IN and V OUT . As a result of reduced conduction losses, the plots plainly display efficiency figures more than 98%. Conclusion Power supplies play an important role in the telecommunications industry. Due to their ability to attain high efficiency and minimize power losses, active clamp forward converters (ACFCs) are favored in telecom power supply designs.
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