iWatt 800V primary-side switcher adds accuracy to ac/dc power control

摘要

The iW1816 digital PWM driver, the latest in the iWatt AccuSwitch primary-side driver family, has an internal power switch rated to 800V for universal ac input and supports high-capacitance loads to 6,000 uF at up to 5W. The driver features adaptively controlled soft-start to support quick startup at output voltages from 5 to more than 12V when driving a large capaci-tive load.