[原创] ADI ADP1071－1／Couplers®隔离功能反激控制器解决方案

ADI公司的ADP1071-1/ADP1071-2是集成了隔离功能和SR驱动器及轻负载模式的反激式控制器,消除了变压器和光耦合器件,降低了系统设计复杂性,成本和元件数量,并提高了系统可靠性.器件集成了误差放大器和优于1%精度基准电压,可编程开关频率50 kHz - 600 kHz,主要用在隔离的DC/DC和AC/DC转换器,通信和工业,小型基站,PoE供电设备,企业交换器和路由器.本文介绍了ADP1071-1/ADP1071-2主要特性,框图,应用电路图以及评估板ADP1071-1EVALZ和评估板ADP1071-2EBZ3.3V主要特性,电路图,材料清单和PCB设计图.

The ADP1071-1/ADP1071-2 are pulse-width modulation (PWM) current mode fixed frequency synchronous flyback controllers designed for isolated dc-to-dc power supplies. Analog Devices proprietary iCouplers® are integrated in the ADP1071-1/ADP1071-2 to eliminate the bulky signal trans-formers and optocouplers that transmit signals over the isolation boundary. Integrating the iCouplers reduces system design complexity, cost, and component count and improves overall system reliability. With the integrated isolators and metal-oxide semiconductor field effect transistor (MOSFET) drivers on both the primary and the secondary side, the ADP1071-1/ADP1071-2 offer a compact system level design and yield a higher efficiency than a diode rectified flyback converter at heavy loads.
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