The ICE2QS03GXUMA1 is a quasi-resonant PWM Controller optimized for off-line switch power supply. The digital frequency reduction with decreasing load enables a quasi-resonant operation till very low load. As a result, the overall system efficiency is significantly improved compared to other conventional solutions. The active burst mode operation enables ultra-low power consumption at standby mode with small and controllable output voltage ripple. Based on the BiCMOS technology, the product has a wide operation range (up to 25V) of IC power supply and lower power consumption. The numerous protection functions give a full protection of the power supply system in failure situations. All of these make the ICE2QS03GXUMA1 an outstanding controller for quasi resonant flyback converter in the market.
Feature
- Active burst mode for low standby power
- Quasi resonant operation
- Digital frequency reduction for better overall system efficiency
- Quasi resonant operation till very low load
- Active burst mode operation at light/no load for low standby input power (<100mW)
- Digital frequency reduction with decreasing load
- Startup cell for VCC pre-charging with constant current
- Built-in digital soft-start
- Foldback correction and cycle-by-cycle peak current limitation
- Latch-off mode for adjustable output over-voltage protection and short-winding protection
Applications
Consumer Electronics, Communications & Networking, Power Management, Audio
