Infineon Technologies ICE2QR2280Z
Off-Line SMPS Quasi-Resonant PWM Controller
FEATURES
● 800V avalanche rugged CoolMOS® with built-in startup cell● Quasi resonant operation till very low load
● Active burst mode operation for low standby input power (< 0.1W)
● Digital frequency reduction with decreasing load for reduced switching loss
● Built-in digital soft-start
● Foldback point correction and cycle-by-cycle peak current limitation
● Maximum on/off time limitation
● Auto restart mode for VCC Overvoltage and Undervoltage protections
● Auto restart mode for overload protection
● Auto restart mode for overtemperature protection
● Latch-off mode for adjustable output overvoltage protection and transformer short-winding protection
DESCRIPTION
The CoolSET®-Q1 series (ICE2QRxx80Z) is the first generation of quasi-resonant integrated power ICs. It is optimized for off-line switch mode power supply applications such as LCD monitor, DVD R/W, DVD Combo, Blue-ray DVD, set top box, etc. Operating the MOSFET switch in quasi-resonant mode, lower EMI, higher efficiency and lower voltage stress on secondary diodes are expected for the SMPS.