PrimAccurate™离线数字PWM控制器

The iW1678 is a high performance AC/DC controller designed to drive an external power bipolar junction transistor (BJT) for peak current mode PWM flyback power supplies. Ideal for wall adapters in portable electronics and power supplies for consumer electronics, the iW1678 offers no-load power consumption less than 150mW, capable of being reduced down to 30mW with little effort, making it capable of meeting global energy efficiency standards. As aPrimAccurate™使用初级侧控制算法的控制器，IW1678不需要任何直接的二级反馈组件，无需光耦合器，降低组件计数和解决方案成本。其他功能包括对话框的专有EZ-EMI™技术，准谐振控制在重负载，电缆和连接器电压降补偿选项中的最佳效率，完全保护故障条件和微小的包装。IW1678有三种选项，IW1678-00具有零电压降补偿，IW1678-01具有300mV电压降补偿偏移量和IW1678-03，具有450mV的偏移补偿。