primAccurate™Off-Line Digital PWM Controller

IW1678是一个高性能AC / DC控制器，旨在驱动外部电源双极连接晶体管（BJT），用于峰值电流模式PWM反激电源。IW1678的便携式电子和电源中的墙壁适配器非常适合，IW1678提供小于150MW的无负载功耗，能够减少到30MW，努力很少，使其能够满足全球能效标准。作为一个primAccurate™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™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.