A switching power supply should be used in this case to maintain an adequate efficiency. For the reference design discussed in the following section, a flyback converter is used to translate the input ...

Victor Guijarro looks at the design and experimental results of an isolated dc-dc converter that can be used in powered devices in Power over Ethernet applications. IEEE Standard 802.3af defines ...

100V LM5072 Integrates Power Interface Port and PWM ... National Semiconductor Introduces Industry's First Single-Chip Power Over Ethernet ... The LM5072's fully configurable AC adapter ...

Phoenix, Ariz. — The NCP1501 alternates from a PWM buck converter to an LDO regulator to deliver 92 percent power efficiency at heavy current loads and reduce noise and quiescent current at light ...

This single-chip, highly integrated active-clamp current-mode PWM controller solution is designed for isolated power supply and Power over Ethernet (PoE) Powered Devices (PD) and significantly ...

The LM5071 pulse-width modulation (PWM) controller can accept power from a Power-over-Ethernet (PoE) IEEE 802.3af Ethernet cable. This single-chip device from National Semiconductor also can ...