G5175

G5175 Low-Power Off-Line Digital Green-Mode PWM Controller DIGITAL PWM IC 1. General Description The G5175 is a high performance AC/DC power supply controller which 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 along with a number of key built-in protection features while minimizing the external component count, simplifying EMI design and lowering the total bill of material cost. The G5175 features a distinctive soft-start scheme, which allows for fast and yet smooth start-up with both small and large capacitive loads. Global Semiconductor’s innovative proprietary technology ensures that power supplies built with the G5175 can achieve both highest average efficiency and fast yet smooth start-up with a wide range of capacitive loads, and are ideal for network power adapter applications. The G5175 removes the need for secondary feedback circui...