脉冲电子ep13加优化变压器平台

　　脉冲电子ep13加优化变压器平台

　　有电子应用广泛的品种，包括以太网供电，数据通信，电信，工业，工作于12 V、24 V或48 V输入需要隔离开关模式电源解决方案将提供输入电压来调节输出电压和电流。对于低于60瓦的功率电平，最常见的电源开关拓扑使用的是连续模式反激式拓扑结构和有源复位正向拓扑。领先的变压器平台对于这些应用，在功率效率方面目前的电路板面积，和成本，是事实上的行业标准ep13。本文已经建立了详细的ep13加平台的发展，具有相同的物理尺寸和足迹为ep13但能够处理更高的功率。下图1显示了优化变压器的设计。

　　As system efficiency becomes increasingly more important and output power requirements continue to increase， two limiting factors emerge when using the industry standard EP13. The first is pin size and coplanarity. Surface-mount transformers must have excellent coplanarity to ensure that the leads are properly soldered to the printed circuit board and to avoid excess heating in the solder interconnection. However， the standard EP13 platform was initially developed for low current telecom filter magnetics so the pin is small and there is little room to terminate higher current windings. As a result， the standard EP13 platform limits the size and number of wires that can be terminated on a pin， and therefore increases the transformers resistance， which limits the through-power. Pulse Electronics took on the goal of creating a more efficient transformer while maintaining the same package size and footprint as the standard EP13. To solve the limitations caused by the pin size， as Figure 2 shows， Pulse’s EP13 Plus platform has employed a larger pin with twice the winding termination area resulting in a 20% reduction in winding resistance and therefore higher through-power.