设备（DTE） ，如无线局域网和无线本地环路，可能需要在同一条电缆上的数据和电源。需要一个高电压的24V电源，以减少在电缆的压降。Maxim > App Notes > AUTOMOTIVE Keywords: High-Efficiency Boost Converter Provides 24V for DTE Dec 27, 2001 APPLICATION NOTE 910 High-Efficiency Boost Converter Provides 24V for DTE Data terminal equipment (DTE), such as wireless LAN and wireless local loop, may require data and power on the same cable. A high voltage power source of 24V is required to reduce the voltage drop in the cable. Isolation is provided by the 12V power-supply. For a system with one or two ports, a custom-designed DC-DC converter is more suitable than power modules, or "bricks", since bricks tend to be bulkier and are more expensive. They are more suitable for systems that support more ports, where the power demand is higher. The MAX668 is an excellent choice for the design……