初准™Off-Line Digital PWM Controller

iW1678是一种高性能AC/DC控制器，设计用于驱动峰值电流模式PWM反激电源的外部功率双极结晶体管（BJT）。iW1678是便携式电子产品中的墙壁适配器和消费电子产品的电源的理想选择，它的空载功耗小于150mW，能够毫不费力地降低到30mW，从而能够满足全球能效标准。作为一个初准™controller, which use primary-side control algorithms, the iW1678 does not need any direct secondary-side feedback components, eliminating the need for optocouplers, reducing component count and solution cost. Additional features include Dialog's proprietaryEZ-EMI公司™technology, quasi-resonant control for optimal efficiency at heavy loads, cable and connector voltage drop compensation options, full protection from fault conditions and tiny packaging. The iW1678 comes in three options, the iW1678-00 with zero voltage drop compensation, the iW1678-01 with a 300mV voltage drop compensation offset and the iW1678-03, with 450mV of offset compensation.