Описание
The iW1818 is a high performance AC/DC power supply control device that uses digital control technology to build peak current mode PWM flyback power supplies. The device includes an internal power BJT, operates in quasi-resonant mode, and includes key built-in protection features. This combination of features and integration simplifies design, improves efficiency, reduces EMI and lowers the bill of material cost.
Targeted at 10W to 12W AC/DC applications with <50mW no-load power consumption at 230VAC and fast dynamic response ? AccuSwitchTM technology with integrated 800V bipolar junction transistor (BJT) ? Adaptively controlled soft-start enables fast and smooth start-up for a wide range of capacitive loads (from 330µF to 6,000µF) with output voltage of 5V to 12V and above ? Very tight constant voltage and constant current regulation over entire operating range ? PrimAccurateTM primary-side feedback eliminates opto-isolator and simplifies design ? EZ-EMI® design enhances manufacturability
