Achieving high efficiency in telecom power supplies
wide input voltage range of 8 V to 76 V for boost configuration and -8 V to -76 V for inverting buck/boost configuration. The output voltage range, from 3.3 V to 60 V, covers the requirements of various applications, including telecom devices. A typical application of this versatile IC is the power supply for a 5G macrocell or femtocell shown in Figure 2. The hot-swap feature is ensured by a negative
■ An active clamp forward design cannot be scaled to higher output power and maintain similar performance. Overcoming ACFC’s limits Analog Devices’ MAX15258 is a high-voltage multi-phase boost controller with an I 2 C digital interface designed for telecom and industrial applications. The device features a
voltage hot-swap controller, such as ADI’s ADM1073, powered by -48 V DC . The same voltage supplies the MAX15258 buck/boost converter, which is capable of providing up to 800 W of output power. The MAX15258 is designed to support up to two MOSFET drivers and four external MOSFETs in boost/inverting-buck-boost single-phase or dual-phase configurations. It also combines
Figure 2: Block diagram of a power supply stage for 5G applications. (Source: Analog Devices)
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