ADI ADP1074隔离式DC－DC同步电源设计方案
ADI公司的ADP1074是集成有源钳位和iCoupler®的隔离式同步正向控制器,集成了ADI公司的专有iCouplers,在原边和副边均集成了隔离器和MOSFET驱动器,从而降低了系统设计复杂性,成本和元器件数量,并提高了系统的整体可靠性.此外还具有输入电流保护,欠压闭锁(UVLO),带可调迟滞功能的精密使能和过温保护(OTP)等特性,主要用在隔离式DC/DC电源转换,中间总线电压生成,电信和工业,基站和天线RF功率,小型蜂窝,POE供电设备,企业交换机/路由器,核心/边缘/城域/光学路由以及电源模块.本文介绍了ADP1074主要特性,框图,多种应用电路以及评估板ADP1074-EVALZ主要特性,电路图,材料清单和PCB设计图.
The ADP1074 is a current mode, fixed frequency, active clamp, synchronous forward controller designed for isolated dc to dc power supplies. Analog Devices proprietary iCouplers® are integrated in the ADP1074 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 ADP1074 offers a compact system level design and yields a higher efficiency than a non-synchronous forward converter at heavy loads.
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