ICE2QR2280Z Off Line SMPS Quasi Resonant PWM Controller ICE2QR2280Z is the first generation of quasi-resonant integrated power ICs. It is optimized for off-line switch mode power supply applications such as LCD monitors, DVD R/W, DVD Combo, Blue-ray DVD, set-top boxes, 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. Based on the BiCMOS technology, the ICE2QR2280Z has a wide operation range (up to 25V) of IC power supply and lower power consumption. It also offers many advantages such as quasi-resonant operation till very low load which increases the average system efficiency, active Burst Mode operation which enables an ultra-low power consumption at standby mode with small and controllable output voltage ripple, etc.