iW1819
Overview
The iW1819 integrates a high performance AC/DC power supply controller using digital control technology and a power BJT switch in one package to enable compact peak current mode PWM flyback power supplies. The device operates in quasi-resonant mode and features multiple key protection features, allowing designs with improved efficiency and lower EMI, while lowering the bill of material cost.
- Optimized for 12V/1.5A AC/DC adapters with < 30mW no-load power consumption at 230VAC and fast dynamic response
- AccuSwitch™ technology - 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)
- Very tight constant voltage and constant current regulation over entire operating range
- PrimAccurate™ primary-side feedback eliminates optocoupler and simplifies design
- EZ-EMI™ design enhances manufacturability
