iW1709 Datasheet | Dialog Semiconductor

i W1709 Off-Line Digital Green-Mode Quasi-Resonant PWM Controller 1 Description The i W1709 is a high performance AC/DC power supply controller that uses digital control technology to build peak current mode PWM flyback power supplies. The device directly drives a power BJT and operates in quasi-resonant mode to provide high efficiency and key built-in protection Features , while minimizing the external ponent count, simplifying EMI design, and lowering the total bill of material cost. The i W1709 Features a distinctive soft-start scheme, which allows for fast and yet smooth start-up with both small and large capacitive loads. The i W1709 removes the need for a secondary feedback circuit while achieving excellent line and load regulation. It also eliminates the need for loop pensation ponents while maintaining stability over all operating conditions. The pulse-by-pulse waveform analysis allows for fast dynamic load response. The built-in power limit function enables optimized...