Green-Mode PWM Controller with High-Voltage

Start-Up Circuit



The LD7575 is a current-mode PWM controller with

excellent power-saving operation. It features a highvoltage

current source to directly supply the startup current

from bulk capacitor and further to provide a lossless startup

circuit. The integrated functions such as the leading-edge

blanking of the current sensing, internal slope compensation,

and the small package provide the users a high efficiency,

minimum external component counts, and low cost solution

for AC/DC power applications.